TRX420FA1/FA2
FOURTRAX
RANCHER
Part Number
This manual should be considered a permanent part of the ATV and
should remain with the ATV when it is resold.
This publication includes the latest production information available
before printing. Honda Motor Co., Ltd. reserves the right to make
changes at any time without notice and without incurring any
obligation.
No part of this publication may be reproduced without written
permission.
This vehicle pictured in this owner’s manual may not match your
actual vehicle.
© Honda Motor Co., Ltd. 2018
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 1 Thursday, May 3, 2018 1:26 PM
Honda
TRX420FA1 4×4
TRX420FA2 4×4
with Power Steering
OWNER’S MANUAL
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 2 Thursday, May 3, 2018 1:26 PM
Introduction
Introduction
Introduction
Congratulations on choosing your Honda ATV.
When you own a Honda, you’re part of a worldwide family of
satisfied customers — people who appreciate Honda’s reputation
for building quality into every product.
Your Honda was designed as a recreational ATV for off-road use by
one rider only.
Before riding, take time to get acquainted with your ATV and how it
works. To protect your investment, we urge you to take
responsibility for keeping your ATV well maintained. Scheduled
service is a must, of course. But it’s just as important to observe the
break-in guidelines, and perform all pre-ride and other periodic
checks detailed in this manual.
We also recommend that you read this owner’s manual before you
ride. It’s full of facts, instructions, safety information, and helpful
tips. To make it easy to use, the manual contains a detailed list of
topics at the beginning of each section and an index at the back of
the book.
As you read this manual, you will find information that is preceded
by a symbol. This information is intended to help you avoid
damage to your Honda, other property, or the environment.
Whenever you ride, tread lightly. By staying on established trails and
riding only in approved areas, you help protect the environment and
keep off-road riding areas open for the future.
NOTICE
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 3 Thursday, May 3, 2018 1:26 PM
Introduction
Introduction
If you have any questions, or if you ever need special service or
repairs, remember that your dealer knows your ATV best and is
dedicated to your complete satisfaction.
Happy riding!
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 4 Thursday, May 3, 2018 1:26 PM
A Few Words About Safety
A Few Words About Safety
A Few Wo rds About Safety
Your safety, and the safety of others, is very important. And
operating this ATV safely is an important responsibility.
To help you make informed decisions about safety, we have
provided operating procedures and other information on labels and
in this manual. This information alerts you to potential hazards that
could hurt you or others.
Of course, it is not practical or possible to warn you about all hazards
associated with operating or maintaining an ATV. You must use your
own good judgement.
You will find important safety information in a variety of forms,
including:
Safety Labels — on the ATV.
Safety Messages — preceded by a safety alert symbol
2
and one
of three signal words: DANGER, WARNING, or CAUTION.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 5 Thursday, May 3, 2018 1:26 PM
A Few Words About Safety
A Few Words About Safety
These signal words mean:
Safety Headings — such as Important Safety Reminders or
Important Safety Precautions.
Safety Section — such as ATV Safety.
Instructions — how to use this ATV correctly and safely.
This entire manual is filled with important safety information —
please read it carefully.
3
DANGER
You WILL be KILLED or
SERIOUSLY HURT if you don't
follow instructions.
3
WARNING
You CAN be KILLED or SERIOUSLY
HURT if you don’t follow
instructions.
3
CAUTION
You CAN be HURT if you don’t
follow instructions.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 6 Thursday, May 3, 2018 1:26 PM
Contents
Contents
Conten ts
These pages give an overview of the contents of your owner’s
manual.
The first page of each section lists the topics covered in that section.
ATV Safety ..................................................................................1
Important safety information you should know, plus a look at the
safety related labels on your ATV.
Instruments & Controls ..............................................................9
The location and function of indicators and controls on your ATV
and operating instructions for various controls and features.
Before Riding ............................................................................49
The importance of wearing a helmet and other protective gear,
how to make sure you and your ATV are ready to ride, and
important information about loading.
Basic Operation & Riding .........................................................65
How to start and stop the engine, shift gears, and brake. Also,
riding precautions.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 7 Thursday, May 3, 2018 1:26 PM
Contents
Contents
Servicing Your Honda ............................................................103
Why your ATV needs regular maintenance, what you need to
know before servicing your Honda, an owner maintenance
schedule, and instructions for specific maintenance and
adjustment items.
Tips ..........................................................................................195
How to store and transport your ATV and how to be an
environmentally responsible rider.
Taking Care of the Unexpected.............................................205
What to do if you have a flat tyre, your engine won’t start, etc.
Technical Information ............................................................231
ID numbers, technical specifications, and other technical facts.
Index........................................................................................241
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 8 Thursday, May 3, 2018 1:26 PM
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 9 Thursday, May 3, 2018 1:26 PM
ATV Safety
1
ATV Safety
ATV Sa fety
This section presents some of the most important information and
recommendations to help you ride your ATV safely. Please take a few
moments to read these pages. This section also includes information
about the location of safety labels on your ATV.
Important Safety Information........................................................ 2
Safety Labels ................................................................................ 5
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 1 Thursday, May 3, 2018 1:26 PM
ATV Safety
2
Important Safety Information
Your ATV can provide many years of service and pleasure if you take
responsibility for your own safety and understand the challenges you
can meet while riding.
There is much that you can do to protect yourself when you ride.
You’ll find many helpful recommendations throughout this manual.
The following are a few that we consider to be most important.
Follow the Age Recommendation
The minimum recommended age for this ATV model is 16. Children
under age 16 should never operate this vehicle.
Always Wear a Helmet
It’s a proven fact: helmets significantly reduce the number and
severity of head injuries. So always wear an approved motorcycle
helmet. We also recommend that you wear eye protection, sturdy
boots, gloves, and other protective gear (page 50).
Never Carry a Passenger
Your ATV is designed for one person only. There are no handholds,
footrests, or seat for a second person, so never carry a passenger. A
passenger could interfere with your ability to move around to
maintain your balance and control of the ATV.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 2 Thursday, May 3, 2018 1:26 PM
ATV Safety
3
Important Safety Information
Ride Off-road Only
Your ATV is designed and manufactured for off-road use only. The
tyres are not made for pavement, and the ATV does not have turn
signals and other features required for use on public roads. If you
need to cross a paved or public road, get off and walk your ATV
across.
Take Time to Learn & Practice
Even if you have ridden other ATVs, take time to become familiar
with how this ATV works and handles. Practice in a safe area until
you build your skills and get accustomed to the ATV’s size and
weight.
Be Alert for Off-road Hazards
The terrain can present a variety of challenges when you ride off-
road. Continually ”read” the terrain for unexpected turns, drop-offs,
rocks, ruts, and other hazards. Always keep your speed low enough
to allow time to see and react to hazards.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 3 Thursday, May 3, 2018 1:26 PM
ATV Safety
4
Important Safety Information
Ride within Your Limits
Pushing limits is another major cause of ATV crashes. Never ride
beyond your personal abilities or faster than conditions warrant.
Remember that alcohol, drugs, fatigue, and inattention can
significantly reduce your ability to make good judgements and ride
safely.
Don’t Drink and Ride
Alcohol and riding don’t mix. Even one drink can reduce your ability
to respond to changing conditions, and your reaction time gets
worse with every additional drink. So don’t drink and ride, and don’t
let your friends drink and ride either.
Keep Your Honda in Safe Condition
It’s important to keep your ATV properly maintained and in safe
riding condition. Having a breakdown can be difficult, especially if
you are stranded off-road far from your base. To help avoid
problems, inspect your ATV before every ride and perform all
recommended maintenance.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 4 Thursday, May 3, 2018 1:26 PM
ATV Safety
5
Safety Labels
Your ATV comes with several labels containing important safety
information. Anyone who rides the vehicle should read and
understand this information before riding.
The labels should be considered permanent parts of the vehicle. If a
label comes off or becomes hard to read, contact your dealer for
replacements.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 5 Thursday, May 3, 2018 1:26 PM
ATV Safety
6
Safety Labels
WARNING
Improper ATV use can result in SEVERE INJURY or DEATH
without proper training or instruction
at speeds too fast for your skills or the conditions
on public roads - a collision can occur with
another vehicle
with a passenger - passengers affect balance
and steering and increase risk of losing control
ALWAYS:
use proper riding techniques to avoid vehicle
overturns on hills and rough terrain and in turns
avoid paved surfaces - pavement may seriously
affect handling and control
LOCATE AND READ OWNER'S MANUAL.
FOLLOW ALL INSTRUCTIONS AND WARNINGS.
NEVER operate:
ALWAYS USE
AN APPROVED
HELMET AND
PROTECTIVE
GEAR
NEVER USE NEVER USE
ON PUBLIC
ROADS
NEVER CARRY
PASSENGERS
WITH DRUGS
OR ALCOHOL
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 6 Thursday, May 3, 2018 1:26 PM
ATV Safety
7
Safety Labels
Improper tire pressure or overloading can
cause loss of control.
Loss of control can result in severe injury
or death.
Cold tire pressure :
Maximum weight capacity : 485lbs.(220kg)
Front : 4.4psi (30kPa)
Rear : 4.4psi (30kPa)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 7 Thursday, May 3, 2018 1:26 PM
ATV Safety
8
Safety Labels
NEVER ride as a passenger.
Passengers can cause a loss
of control, resulting in
SEVERE INJURY or DEATH.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 8 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
9
Instruments & Controls
(cont’d)
In st rumen ts & C ontrols
This section shows the location of all indicators and controls you
would normally use before or while riding your ATV.
The items listed on this page are described in this section.
Instructions for other components are presented in other sections of
this manual where they will be most useful.
Operation Component Locations ................................................ 11
Indicators & Displays................................................................... 14
Multi-function Display.............................................................. 20
Speed and Mileage Unit Changing........................................... 23
4WD Indicator ......................................................................... 23
Gear Position Indicator............................................................. 24
Fuel Gauge .............................................................................. 25
Digital Clock ............................................................................ 27
Odometer................................................................................ 28
Tripmeter................................................................................. 28
Coolant Temperature Gauge ................................................... 29
Hour meter.............................................................................. 31
Maintenance Tripmeter & Maintenance Hour meter................. 32
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 9 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
10
Instruments & Controls
Controls & Features.................................................................... 34
Ignition Switch......................................................................... 34
2WD/4WD Select Lever............................................................ 35
Start Button............................................................................. 36
Engine Stop Switch.................................................................. 36
Headlight Switch ..................................................................... 37
Headlight Dimmer Switch ........................................................ 37
Horn Button ............................................................................ 37
Recoil Starter ........................................................................... 38
Throttle Lever .......................................................................... 39
Drive Mode Select Switch ........................................................ 40
Gearshift Switch ...................................................................... 41
Front Brake Lever..................................................................... 42
Rear Brake Lever/Parking Brake Lever ....................................... 42
Rear Brake Pedal...................................................................... 42
Parking Brake/Reverse Lever (P/R Lever) .................................... 43
Flag Pole Bracket ..................................................................... 45
Trailer Hitch ............................................................................. 46
Storage Compartment ............................................................. 47
EPS (Electric Power Steering) (TRX420FA2 only)........................ 48
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 10 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
11
Operation Component Locations
headlight dimmer switch
P/R lever
rear brake lever/
parking brake lever
engine stop switch
start button
ignition switch
2WD/4WD select lever
throttle lever
front brake lever
headlight switch
gearshift
switches
drive mode select
switch
horn
button
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 11 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
12
Operation Component Locations
rear cargo rack
front cargo rack
rear brake pedal
recoil starter
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 12 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
13
Operation Component Locations
flag pole bracket
trailer hitch
storage compartment
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 13 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
14
Indicators & Displays
The indicators and displays on your ATV keep you informed, alert
you to possible problems, and make your riding safer and more
enjoyable.
Refer to the indicators frequently. Their functions are described on
the following pages.
(5) PS (Electric Power Steering)
indicator (TRX420FA2 only)
(1) neutral indicator
(2) reverse indicator
(3) PGM-FI indicator
(4) high coolant
temperature indicator
(7) mode button
(4)
(2)
(7)
(6) multi-function display
(1)
(6) (5)
(3)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 14 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
15
Indicators & Displays
Lamp Check
Initial lamp check:
The indicators come on for a few seconds and then go off when you
turn the ignition switch to ON (q).
The high coolant temperature indicator and PGM-FI indicator will
temporarily come back on for a few seconds and then go off after
initial lamp check.
TRX420FA2 only
The PS (Electric Power Steering) indicator come back on and remains
on until the engine is started after initial lamp check.
These indicators are identified in the table on page 17 with the
words: Lamp Check.
When applicable, the reverse or neutral indicators come back on and
remain on until you shift out of reverse or neutral after initial lamp
check.
If one of these indicators does not come on when it should, have
your dealer check for problems.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 15 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
16
Indicators & Displays
Display Check
When the ignition switch is turned on, the multi-function display (1)
will temporarily show all the modes and digital segments and initial
message. So you can make sure the liquid crystal display is
functioning properly.
The displays are identified in the table on page 18 with the words:
Display Check.
If any part of these displays does not come on when it should, have
your dealer check for problems.
(1) multi-function display
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 16 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
17
Indicators & Displays
(cont’d)
1 Neutral indicator Lights when the transmission is
in neutral. Lamp Check.
2 Reverse indicator Lights when the transmission is
in reverse. Lamp Check.
3 PGM-FI indicator Lights when there is any
abnormality in the PGM-FI
(Programmed Fuel Injection)
system. Should also light for a
few seconds and then go off
when the ignition switch is
turned on. If the indicator
comes on at any other time,
reduce speed and take your
vehicle to your dealer as soon
as possible. Lamp Check.
4 High coolant
temperature
indicator
Lights when coolant
temperature is high enough to
adversely affect the service life
of the engine.
If the high coolant
temperature indicator comes
on while you are riding,
immediately bring the vehicle
to a stop, turn the engine off
and let it cool. See page 219.
Lamp Check.
5
PS (Electric Power
Steering) indicator
(TRX420FA2 only)
Lights when there is an
abnormality in the EPS (Electric
Power Steering) system. See
page 48. Lamp Check.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 17 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
18
Indicators & Displays
6 Multi-function
display
The display includes the
following functions. Display
Check.
4WD indicator Shows when the 4WD drive
mode engages (page 23).
Gear position
indicator
Shows the gear position (page
24).
Speedometer Shows riding speed (page 20).
Fuel gauge Shows approximate fuel supply
available (page 25).
Digital clock Shows the time (hours and
minutes) (page 27).
Odometer Shows accumulated mileage
(page 28).
Tripmeter Shows mileage per trip (page
28).
Coolant
temperature
gauge
Shows approximate coolant
temperature (page 29).
Hour meter Shows hours and tenths of
hours of engine operation
(page 31).
Maintenance
minder indicator
Shows when specified
maintenance interval is
reached (page 32).
Maintenance
tripmeter
Inform when the mileage or
operating hours on your ATV
approaches and passes the
interval specified on the
maintenance schedule (page
32).
Maintenance
hour meter
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 18 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
19
Indicators & Displays
7 Mode button Selects display in the lower
parts of multi-function display
(page 20). This button also used
to change the speed and
mileage unit (page 23), adjusts
the clock (page 27) and resets
tripmeter, maintenance
tripmeter and maintenance
hour meter (page 32).
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 19 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
20
Indicators & Displays
The multi-function display (1) includes the following functions:
Multi-function Display
4WD indicator Odometer
Gear position indicator Tripmeter
Maintenance minder
indicator
Coolant temperature gauge
Hour meter
Speedometer Maintenance tripmeter
Fuel gauge Maintenance hour meter
Digital clock
(2)
(1)
(4)
(6)
(3)
(5)
(1) multi-function display
(2) 4WD indicator
(5) maintenance minder
indicator
(3) gear position indicator
(6) fuel gauge/digital clock/
odometer/tripmeter/coolant
temperature gauge/hour
meter/maintenance
tripmeter/maintenance hour
meter
(4) speedometer
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 20 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
21
Indicators & Displays
Each time you press the mode button, mode will change as shown in
the illustration.
Fuel gauge (page 25)
Digital clock (page 27)
Odometer (page 28)
Tripmeter (page 28)
Coolant temperature
gauge (page 29)
When ATV
is moving
When ATV
is not
moving
Hour meter (page 31)
Maintenance
tripmeter (page 32)
Maintenance hour
meter (page 32)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 21 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
22
Indicators & Displays
If there is a fuel warning with your ATV, the display will automatically
change to the fuel gauge.
If you try to change the display back to ordinary display, it will
automatically return to the fuel gauge.
If there is a coolant temperature warning with your ATV, the display
will automatically change to the coolant temperature gauge. If you
try to change the display back to ordinary display, it will
automatically return to the coolant temperature gauge.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 22 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
23
Indicators & Displays
The speedometer, odometer, tripmeter and maintenance tripmeter
show in either “MPH” and “MILE” or “KM/H” and “KM”.
To change the speed and mileage unit, press and hold the mode
button (1) for more than 5 seconds in odometer (page 28) with the
ATV stopped.
The 4WD indicator (1) appears when the 4WD mode engages (page
35).
Speed and Mileage Unit Changing
4WD Indicator
(1) mode button
(1)
(1) 4WD indicator
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 23 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
24
Indicators & Displays
The gear position indicator (1) shows the gear position when the
ignition switch is in the ON (q) position.
AUTO (automatic shift mode):
The indicator displays N for neutral, R for reverse, and D for drive.
ESP (manual shift mode):
The indicator displays N for neutral, R for reverse, and 1 – 5 for the
five forward gears.
“–” will be displayed on the gear position indicator when the
transmission is not shifted into gear properly. Before riding, check
that the gear position is properly displayed on the gear position
indicator.
If the gear position indicator shows “–” or blinks, turn the ignition
switch to the OFF (w) position, and then turn it back to the ON (q)
position again. If the gear position indicator shows “–”, rock the
vehicle back and forth and make sure the gear position indicator is
displayed properly and then if the gear position indicator still shows
“–” or blinks, see your dealer.
If the “–” on the gear position indicator is blinking, see your dealer.
Gear Position Indicator
(1) gear position indicator
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 24 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
25
Indicators & Displays
(cont’d)
The fuel gauge (1) shows the approximate fuel supply available with
fuel mark (2). The fuel tank capacity is:
14.7 ℓ (3.88 US gal, 3.23 Imp gal)
Regardless of what mode the display is in, when the fuel level
reaches only 1st segment (3), the display will automatically switch to
the fuel gauge display. You should refuel as soon as possible.
The amount of fuel remaining when there is only 1st segment is
approximately:
6.9 ℓ (1.82 US gal, 1.52 Imp gal)
Fuel Gauge
(2)
(1) fuel gauge
(1)
(2) fuel mark
(3)
(3) 1st segment
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 25 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
26
Indicators & Displays
When the fuel gauge show E _ _ _ _ _ F (4) and LO FUEL (5) blink 3
times alternately and fuel mark blinks, you should refill the tank as
soon as possible.
(The fuel mark blinks except the fuel gauge display)
The amount of fuel reserve is approximately:
4.9 ℓ (1.29 US gal, 1.08 Imp gal)
Fuel gauge failure:
If the fuel gauge E - - - - - F (6) is blinking, the fuel gauge function
has failed. See your dealer.
(The fuel mark disappears except the fuel gauge display)
(4)
(4) E _ _ _ _ _ F
(5) LO FUEL
(5)
(6) E - - - - - F
(6)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 26 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
27
Indicators & Displays
The digital clock (1) displays hours and minutes with the clock mark
(2), when the ignition switch is ON (q).
To adjust the time, proceed as follows:
1.
Turn the ignition switch ON (q) to display the clock (page 21).
2.
Press and hold the mode button (3) until the display start
blinking.
3.
To advance the display 1 minute at a time, press and release the
mode button for 0.5 seconds.
Press and hold the mode button, for more than 0.5 seconds, the
display will begin advancing fast.
4.
Release the mode button when the display reaches the desired
time.
5.
To set the clock, press and release the mode button for less than
0.5 seconds.
The clock can also be set by turning the ignition switch off and
then on.
Digital Clock
(3) mode button
(1)
(2)
(3)
(1) digital clock
(2) clock mark
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 27 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
28
Indicators & Displays
The odometer (1) registers total distance traveled in mileage while
the ignition is ON (q) with the ODO display (2). The odometer locks
at 999,999 when the readout exceeds 999,999.
The tripmeter (1) shows mileage per trip with the TRIP display (2),
while the ignition is ON (q) since you last reset the tripmeter. The
tripmeter returns to 0.0 when the readout exceeds 999.9. To reset
the tripmeter to 0.0, press the mode button (3) and hold it in for at
least 2 seconds in the tripmeter mode.
Odometer
Tripmeter
(1)
(2)
(1) odometer (2) ODO display
(1)
(2)
(1) tripmeter (3) mode button
(2) TRIP display
(3)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 28 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
29
Indicators & Displays
(cont’d)
The coolant temperature gauge (1) with the coolant temperature
mark (2) shows the coolant temperature.
When coolant temperature is low, the coolant temperature gauge
will display “Lo”.
If all sections of the coolant temperature gauge and high coolant
temperature indicator are on (automatically appears in the display)
while you are riding, immediately stop the vehicle, turn the engine
off and check the coolant reserve tank level. See page 140.
Coolant Temperature Gauge
(2)
(3)
(1) coolant temperature gauge (3) high coolant
temperature indicator
(2) coolant temperature mark
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 29 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
30
Indicators & Displays
NOTICE
Continuing to ride with an overheated engine can cause serious
engine damage.
Coolant temperature gauge failure:
If the coolant temperature system has an error, the coolant
temperature gauge (1) will blink and preferentially appear in the
display, and/or high coolant temperature indicator (3) will turn on.
If this occurs, see your dealer as soon as possible.
(1)
(3)
(1) coolant temperature gauge (3) high coolant
temperature indicator
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 30 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
31
Indicators & Displays
The hour meter (1) shows accumulated hours while the ignition
switch is ON (q) with the hour meter mark (2). The hour meter
provides accurate service period information for initial and regular
maintenance.
The hour meter locks at 99,999.9 when the readout exceeds
99,999.9.
Hour meter
(1)
(2)
(1) hour meter (2) hour meter mark
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 31 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
32
Indicators & Displays
The maintenance tripmeter (1), the maintenance hour meter (2) and
maintenance minder indicator (3) inform you when the mileage or
operating hours on your ATV approaches and passes the
maintenance interval specified on the maintenance schedule (page
110).
The maintenance tripmeter, or the maintenance hour meter and
maintenance minder indicator will blink, when they reach their
setting values.
Maintenance Tripmeter & Maintenance Hour
meter
(3)
(1) maintenance tripmeter (3) maintenance minder
indicator
(2) maintenance hour meter
(3)
(2)
(1)
(1)
(3)
(2)
(3)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 32 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
33
Indicators & Displays
Reset the meters after each scheduled maintenance.
To reset the maintenance tripmeter and the maintenance hour
meter, press and hold the mode button and turn the ignition switch
to ON ( I ). Continue to hold the mode button, the maintenance
minder indicator will light up, and after 2 seconds will blink twice,
the maintenance minder indicator is reset.
Also the maintenance tripmeter and maintenance hour meter will
reset.
Maintenance Minder Indicators:
If the maintenance is done before the setting interval, be sure to
reset the meters after the maintenance.
Initial Maintenance
Appears at 150 km (100 miles) or 20 operating
hours, whichever comes first.
Regular Maintenance Interval 1
Appears 1,000 km (600 miles) or 100 operating
hours after the Initial Maintenance or Regular
Maintenance Interval 2 is performed and
maintenance minder is reset, whichever
comes first in the maintenance schedule.
Regular Maintenance Interval 2
Appears 1,000 km (600 miles) or 100 operating
hours after Regular Maintenance Interval 1 is
performed and maintenance minder is reset,
whichever comes first in the maintenance
schedule.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 33 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
34
Controls & Features
The ignition switch (1) is used for starting and stopping the engine
(page 71). Insert the key and turn it to the right for the ON (q)
position.
The ignition switch is also used to reset the maintenance tripmeter
and the maintenance hour meter (page 32).
Ignition Switch
Key Position Function
ON (q) Electrical circuits on.
OFF (w) No electrical circuits function.
CENTRE OF HANDLEBAR
q ON
w OFF
(1) ignition switch
OFF ON
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 34 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
35
Controls & Features
Your ATV is equipped with a 2WD/4WD select lever (1), which
permits a choice between the “2WD” and “4WD” drive modes.
Select a drive mode that’s suitable for your riding.
Keep both hands on the handlebar while machine is in motion and
come to a complete stop before using the 2WD/4WD select lever.
The 2WD/4WD select lever is located on the left side of the fuel tank.
To select the drive mode, shift the 2WD/4WD select lever to the
desired position.
After using the 2WD/4WD select lever, the mode may not
mechanically engage until forward motion begins.
To check your present drive mode, look at the 4WD indicator (2).
2WD mode: the 4WD indicator goes off when the 2WD mode engages.
4WD mode: the 4WD indicator goes on when the 4WD mode engages.
2WD/4WD Select Lever
(2)
(1)
(1) 2WD/4WD select lever (2) 4WD indicator
4WD MODE
4WD MODE
2WD MODE2WD MODE
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 35 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
36
Controls & Features
The start button (1) is used for starting the engine. Pushing the
button in starts the engine. See Starting Procedure, page 73.
When the start button is pushed, the starter motor will crank the
engine. The starter motor will not operate if the engine stop switch
is in the OFF (r) position when the start button is pushed.
The engine stop switch (2) is used to stop the engine in an
emergency. To operate, slide the switch to the OFF (r) position. The
switch must be in the RUN (e) position to start the engine, and it
should normally remain in the RUN (e) position even when the
engine is OFF.
If your ATV is stopped with the ignition switch ON (q) and the engine
stop switch OFF (r), the battery will discharge. Turn the ignition
switch to OFF (w) to prevent battery discharge.
Start Button
o
Engine Stop Switch
e r
LEFT HANDLEBAR
(1) start button
(2) engine stop switch
o START
e RUN
(2)
(1)
r OFF
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 36 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
37
Controls & Features
The headlight switch (1) is used to turn the headlights ON (y) or OFF
(t). To operate, turn the switch to ON (y) or OFF (t).
The headlight dimmer switch (2) is used to change between the high
and low beams of the headlight. To operate, turn the switch to HI
(u) for high beam, LO (i) for low beam.
Press the horn button (3) to sound the horn.
Headlight Switch
y t
Headlight Dimmer Switch
u i
Horn Button
(1) headlight switch
(2) headlight dimmer switch
(3) horn button
LEFT HANDLEBAR
y ON
t OFF
u HI
i LO
(1)
(2)
(3)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 37 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
38
Controls & Features
The recoil starter (1) is used to start the engine when the battery is
low. See Using the Recoil Starter, page 76.
Recoil Starter
RIGHT SIDE
(1) recoil starter
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 38 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
39
Controls & Features
The throttle controls engine rpm (speed). To increase engine rpm,
press the throttle lever (1) with your thumb. To reduce engine rpm,
release pressure on the throttle lever. The throttle will automatically
return to the closed position (engine idle) when you remove your
thumb.
Throttle Lever
RIGHT HANDLEBAR
(1) throttle lever (A) to open the throttle
(A)
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 39 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
40
Controls & Features
The drive mode select switch (1) has two positions, AUTO (automatic
shift mode) and ESP (manual shift mode).
See Shifting Gears page 77.
Drive Mode Select Switch
(1) drive mode select switch
RIGHT HANDLEBAR
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 40 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
41
Controls & Features
AUTO (automatic shift mode):
These gearshift switches [upshift switch (1) and downshift switch (2)]
are used to select the drive (D), neutral (N) and reverse (R).
See Shifting Gears, page 77 and Riding in Reverse, page 83.
ESP (manual shift mode):
These gearshift switches are used to select the next higher or lower
gear in the transmission. To operate, press the upshift switch (1) to
engage the next higher gear or press the downshift switch (2) to
engage the next lower gear.
See Shifting Gears, page 77 and Riding in Reverse, page 83.
Gearshift Switch
LEFT HANDLEBAR
(1) upshift switch
(1)
(2)
(2) downshift switch
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 41 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
42
Controls & Features
The front brake lever is used to slow or stop your ATV. To operate,
pull the lever. For information on braking techniques, see page 85.
The rear brake lever/parking brake lever is used to slow or stop your
ATV. To operate, pull the lever. For information on braking
techniques, see page 85.
The rear brake pedal is used to slow or stop your ATV. To operate,
depress the pedal. For information on braking techniques, see page 85.
Front Brake Lever
Rear Brake Lever/Parking Brake Lever
Rear Brake Pedal
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 42 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
43
Controls & Features
The P/R lever (1) on the rear brake lever/parking brake lever (2) is
used to apply the parking brake or to shift the transmission into
reverse.
Parking Brake/Reverse Lever (P/R Lever)
LEFT HANDLEBAR
(1) P/R lever
(2)
(2) rear brake lever/parking brake lever
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 43 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
44
Controls & Features
To apply the parking brake:
Bring the vehicle to a complete stop, make sure the transmission is in
neutral.
Squeeze the rear brake lever/parking brake lever (1), then rotate the
P/R lever (2) clockwise until it engages the slot on the rear brake
lever/parking brake lever bracket.
For more information on Parking, see page 100.
To release the parking brake:
Squeeze the rear brake lever/parking brake lever until the P/R lever is
released from the slot on the rear brake lever/parking brake lever
bracket.
The brake light is activated by applying the parking brake. When
using the parking brake, be sure to turn the ignition switch to OFF
(w) to avoid discharging the battery.
To shift the transmission into reverse:
See Riding in Reverse, page 83.
(1)
(2)
(1) rear brake lever/parking brake lever
(2) P/R lever
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 44 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
45
Controls & Features
Flag poles are optional equipment available from your dealer. To
mount a pole in the bracket (1), follow the instructions that come
with the flag pole kit.
Flag poles are required in some riding areas. Check local regulations
before riding.
Flag Pole Bracket
RIGHT REAR
(1)
(1) flag pole bracket
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 45 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
46
Controls & Features
The trailer hitch (1) is located on the rear axle housing. To use the
hitch, you’ll need a proper size ball (2) as specified by the trailer
manufacturer.
To attach the ball and properly hook up a trailer, follow the trailer
manufacturer’s instructions. For load limits and operational
guidelines, see page 59.
Trailer Hitch
REAR
(1) trailer hitch (2) ball
(1)
(2)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 46 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
47
Controls & Features
The storage compartment (1) is located below the rear cargo rack
(2).
To open the compartment, unhook the rubber strap (3).
Be careful not to flood this area when washing your ATV.
Storage Compartment
REAR
(1) storage compartment
(1)
(3) rubber strap
(2)
(2) rear cargo rack
(3)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 47 Thursday, May 3, 2018 1:26 PM
Instruments & Controls
48
Controls & Features
This ATV is equipped with an electronically controlled, electric-
power-assisted steering system.
While the engine is running, the EPS (Electric Power Steering) system
provides power from the electric motor, which helps you to turn the
ATV’s handlebar more easily.
The EPS system on this ATV utilizes an overheat protection feature to
prevent damage to system components. In certain extended,
repetitive high-load situations, the system will reduce or even disable
power steering assist. The steering will perform as a normal non-EPS
system during this brief period. After cooling down, it will then
return to normal EPS operation.
The PS indicator should light when the ignition switch is turned ON
(q) and remain on until the engine is started.
The PS indicator also lights when there is any abnormality in the EPS
system. If this occurs, the electric power assist for turning will not be
available, but the manual steering system will perform as usual.
If the PS indicator lights at any time while riding, reduce speed and
take your ATV to your dealer as soon as possible. Continuing to ride
with a EPS system problem can cause system damage.
Do not modify your Electric Power Steering system. In case of a
malfunction, take your ATV to your dealer.
EPS (Electric Power Steering) (TRX420FA2 only)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 48 Thursday, May 3, 2018 1:26 PM
Before Riding
49
Before Riding
Before Rid ing
Before each ride, you need to make sure you and your Honda are
both ready to ride. To help get you prepared, this section discusses
how to evaluate your riding readiness, what items you should check
on your ATV, and adjustments to make for your comfort,
convenience, or safety. This section also includes important
information about loading.
Are You Ready to Ride?.............................................................. 50
Protective Apparel ................................................................... 50
Rider Training .......................................................................... 52
Age Recommendation ............................................................. 53
No Passengers ......................................................................... 53
No Alcohol or Drugs ................................................................ 54
Is Your ATV Ready to Ride? ........................................................ 55
Pre-ride Inspection ................................................................... 55
Load Limits & Guidelines............................................................. 59
Loading ................................................................................... 59
Load Limits .............................................................................. 60
Loading Guidelines .................................................................. 61
Accessories & Modifications........................................................ 62
Accessories.............................................................................. 62
Modifications........................................................................... 63
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 49 Thursday, May 3, 2018 1:26 PM
Before Riding
50
Are You Ready to Ride?
Before you ride your ATV for the first time, we urge you to:
• Read this owner’s manual and the labels on your ATV carefully.
• Make sure you understand all the safety messages.
• Know how to operate all the controls.
Before each ride, be sure:
• You feel well and are in good physical and mental condition.
• You are wearing an approved motorcycle helmet (with chin strap
tightened securely), eye protection, and other protective
clothing.
• You don’t have any alcohol or drugs in your system.
For your safety, we strongly recommend that you always wear an
approved motorcycle helmet, eye protection, boots, gloves, trousers,
and a long-sleeved shirt or jacket whenever you ride.
Although complete protection is not possible, wearing proper gear
can reduce the chance of injury when you ride.
Following are suggestions to help you choose the proper gear.
Helmet and Eye Protection
Your helmet is your most important piece of riding gear because it
offers the best protection against head injuries. A helmet should fit
your head comfortably and securely.
Protective Apparel
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 50 Thursday, May 3, 2018 1:26 PM
Before Riding
51
Are You Ready to Ride?
An open-face helmet offers some protection, but a full-face helmet
offers more. Always wear a face shield or goggles to protect your
eyes and help your vision.
Additional Riding Gear
In addition to a helmet and eye protection, we also recommend:
• Sturdy off-road motorcycle boots to help protect your feet,
ankles, and lower legs.
• Off-road motorcycle gloves to help protect your hands.
• Riding trousers with knee and hip pads, a riding jersey with
padded elbows, and a chest/shoulder protector.
WARNING
3
WARNING
Operating this ATV without wearing an
approved motorcycle helmet, eye protection,
and protective clothing could increase your
chances of severe injury or death in the event
of an accident.
Always wear an approved motorcycle helmet
that fits properly and wear eye protection
(goggles or face shield), gloves, boots, long-
sleeved shirt or jacket and trousers.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 51 Thursday, May 3, 2018 1:26 PM
Before Riding
52
Are You Ready to Ride?
Developing your riding skills is an on-going process. Even if you have
ridden other ATVs, take time to become familiar with how this ATV
works and handles. Practice riding the ATV in a safe area to build
your skills. Do not ride in rough terrain until you get accustomed to
the ATV’s controls, and feel comfortable with its size and weight.
Rider Training
WARNING
3
WARNING
Operating this ATV without proper
instruction could increase your risk of an
accident which could lead to serious injury or
death.
Beginning and inexperienced operators
should complete the certified training course
offered by Honda. They should then regularly
practice the skills learned in the course and
the operating techniques described in the
owner’s manual.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 52 Thursday, May 3, 2018 1:26 PM
Before Riding
53
Are You Ready to Ride?
The minimum recommended age for this ATV model is 16. For
safety, never let children under 16 years old operate this vehicle.
This ATV is designed as an operator-only vehicle. The long seat is
designed to allow the rider to change body position, not for carrying
a passenger. Never let a passenger ride on the seat or on the front or
rear cargo racks.
Age Recommendation
WARNING
3
WARNING
A child using an ATV that is not
recommended for their age could lose vehicle
control while riding, resulting in severe injury
or death.
A child under 16 should never operate an ATV
with engine size greater than 90cc.
No Passengers
WARNING
3
WARNING
Carrying a passenger on this ATV greatly
reduces your ability to balance and control
this ATV and could cause a crash and you or
your passenger could be injured or killed.
Never carry a passenger on this ATV.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 53 Thursday, May 3, 2018 1:26 PM
Before Riding
54
Are You Ready to Ride?
Alcohol, drugs and ATVs don’t mix. Even a small amount of alcohol
can impair your ability to operate an ATV safely. Likewise, drugs —
even if prescribed by a physician — can be dangerous while
operating an ATV. Consult your doctor to be sure it is safe to operate
a vehicle after taking medication.
No Alcohol or Drugs
WARNING
3
WARNING
Operating this ATV after consuming alcohol
or drugs can seriously affect your judgement,
cause you to react more slowly, affect your
balance and perception, and result in serious
injury or death.
Never consume alcohol or drugs before or
while operating this ATV.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 54 Thursday, May 3, 2018 1:26 PM
Before Riding
55
(cont’d)
Is Your ATV Ready to Ride?
Before each ride, it’s important to inspect your ATV and make sure
any problem you find is corrected. A pre-ride inspection is a must,
not only for safety, but because having a breakdown, or even a flat
tyre, can be a major inconvenience.
If your ATV has overturned or been involved in a collision, do not ride
the vehicle until it has been inspected by your dealer. There may be
damage or other problems you cannot see.
Check the following items before you get on the ATV:
WARNING
3
WARNING
Improperly maintaining this ATV or failing to
correct a problem before riding can cause a
crash in which you can be seriously hurt or
killed.
Always perform a pre-ride inspection before
every ride and correct any problems.
Pre-ride Inspection
Engine Oil Check the level and add oil if needed
(page 129).
Check for leaks.
Radiator Coolant Check the coolant level and add coolant if
needed (page 140).
Check for leaks.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 55 Thursday, May 3, 2018 1:26 PM
Before Riding
56
Is Your ATV Ready to Ride?
Fuel Check the level and add fuel (page 124) if
needed. Also make sure the fuel fill cap is
securely fastened.
Check for leaks.
Tyres Use a gauge to check the air pressure. Adjust
if needed. Also look for signs of damage or
excessive wear (page 174).
Drivetrain Boots Check for damage (page 182).
Guards Check for damage or looseness (page 180).
Nuts & Bolts
Check the wheels to see that the axle nuts are
tightened. Use a wrench to make sure all
accessible nuts, bolts, and fasteners are tight.
Underbody & Exhaust
System
Check for, and remove, any dirt, vegetation
or other debris that could be a fire hazard or
interfere with the proper operation of the
vehicle.
Air Cleaner Housing
Drain Tube
Check for deposits in the drain tube. If
necessary, clean the tube (page 151) and
check the air cleaner housing.
Leaks, Loose Parts Walk around your ATV and look for anything
that appears unusual, such as a leak or loose
cable.
Cable Check the cable housings for wear. Check
the fittings for looseness. Replace or tighten
as needed.
Lights Make sure the headlight, brake light and
taillight are working properly.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 56 Thursday, May 3, 2018 1:26 PM
Before Riding
57
Is Your ATV Ready to Ride?
(cont’d)
If you are carrying cargo, also check the following:
Check these items after you get on the ATV:
Loading Limits Make sure you do not exceed the load
limits (page 60).
Cargo Check that all cargo is secure.
Throttle Check the freeplay and adjust if needed.
Press the throttle to make sure it moves
smoothly without sticking, and snaps shut
automatically when it is released, in all
steering positions (page 152).
Brakes Squeeze the front and rear brake levers
and step on the rear brake pedal to check
that the controls operate normally. Check
for proper freeplay (page 167,169). Make
sure there is no brake fluid leakage
(page 164).
Reverse Assist Lever Check the freeplay and adjust if needed
(page 154). Make sure the lever operates
smoothly without sticking.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 57 Thursday, May 3, 2018 1:26 PM
Before Riding
58
Is Your ATV Ready to Ride?
Remember, be sure to take care of any problem you find, or have
your dealer correct it before you ride.
Headlight and
Headlight Dimmer
Switch
Check for proper function (page 37).
Engine Stop Switch Check for proper function (page 36).
Steering Check that the wheels turn properly as you
steer the handlebar. Move the handlebar
right and left and check that there is no
excessive backlash.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 58 Thursday, May 3, 2018 1:26 PM
Before Riding
59
Load Limits & Guidelines
Your Honda was designed as a rider-only ATV. It was not designed
to carry a passenger. It can carry cargo on the cargo racks, however,
carrying cargo anywhere else or carrying a passenger could interfere
with your balance and control of the ATV.
In addition, exceeding the weight limits or carrying an unbalanced
load can seriously affect your ATV’s handling, braking and stability.
Adding accessories or making modifications that change this ATV’s
design and performance can also make it unsafe. Also, the weight of
any accessories will reduce the maximum load the ATV can carry.
More specific information on load limits, accessories, and
modifications follows.
How much weight you put on your ATV, and how you load it, are
important to your safety. If you decide to carry cargo, you should be
aware of the following information.
Loading
WARNING
3
WARNING
Overloading, improper loading, or carrying a
passenger can cause a crash and you can be
seriously hurt or killed.
Follow all load limits and other loading
guidelines in this manual.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 59 Thursday, May 3, 2018 1:26 PM
Before Riding
60
Load Limits & Guidelines
Following are the load limits for your ATV:
There are limits to how much weight can be carried on your ATV and
be pulled in a trailer.
The following load limits apply to standard equipment only.
Modifying your ATV, using non-standard equipment, or riding on
terrain that is not flat and smooth could further reduce these limits.
Tongue weight can be measured with an ordinary bathroom scale.
Place the scale under the tongue, using either a tongue jack or other
support to keep the trailer level.
The weight of added accessories will reduce the maximum cargo
weight you can carry.
Load Limits
maximum weight capacity 220 kg (485 lb)
(includes the weight of the rider, all cargo, and accessories.)
front cargo rack weight limit
rear cargo rack weight limit
tow weight limit
= 30 kg (66 lb)
= 60 kg (133 lb)
= 385 kg (850 lb)
(Combined weight of the trailer and all cargo in the trailer)
tongue weight = 14 kg (30 lb) recommended
(Weight on the trailer tongue)
tongue and rear cargo weight = 60 kg (133 lb) maximum
(Combined weight on the trailer tongue and on the rear cargo rack)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 60 Thursday, May 3, 2018 1:26 PM
Before Riding
61
Load Limits & Guidelines
Carrying cargo or pulling a trailer will affect how your ATV handles
and greatly reduce its ability in accelerating, braking and making
turns and other maneuvers.
Be sure to observe the weight limits and follow these guidelines:
• Check that the tyres are properly inflated.
• Do not place cargo anywhere on the ATV other than on the front
and rear racks. Otherwise, operating stability may be adversely
affected.
• Never ride with a passenger on the front or rear cargo racks. The
ATV is not designed to carry a passenger.
• Use the trailer hitch to tow another vehicle or trailer. Do not tow
by tying a rope or cable to the rear rack.
• Load cargo on the rear rack as far forward as possible. Make sure
cargo on the front rack does not interfere with handlebar
movement.
• Do not allow cargo to extend beyond the edges of either the
front or rear racks.
• Make sure all cargo is secured before riding.
• Balance cargo weight evenly on both sides.
• Never exceed the maximum weight limit.
• When towing a trailer, take care to maintain balance and
stability. Distribute cargo between the front and rear of the trailer
to obtain the recommended tongue weight.
• Allow extra room for starting, stopping and turning whenever
you carry cargo or pull a trailer.
• Avoid riding on steep slopes when carrying cargo or pulling a
trailer.
• Never cross a slope when towing a trailer.
Loading Guidelines
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 61 Thursday, May 3, 2018 1:26 PM
Before Riding
62
Accessories & Modifications
Modifying your ATV or using non-Honda accessories can make your
ATV unsafe.
Before you consider making any modifications or adding an
accessory, be sure to read the following information.
We strongly recommend that you use only Honda Genuine
Accessories that have been specifically designed and tested for your
ATV. Because Honda cannot test all other accessories, you must be
personally responsible for proper selection, installation, and use of
non-Honda accessories.
Check with your dealer for assistance and always follow these
guidelines:
• Make sure the accessory does not obscure any lights, reduce
ground clearance, limit suspension travel or steering travel, or
interfere with operating any controls.
• Make sure the accessory does not interfere with your ability to
shift body position on the seat or operate hand and foot controls.
• Do not add any electrical equipment that will exceed the vehicle’s
electrical system capacity (page 237). A blown fuse can cause a
loss of lights or engine power (page 221).
WARNING
3
WARNING
Improper accessories or modifications can
cause a crash in which you can be seriously
hurt or killed.
Follow all instructions in this owner’s manual
regarding accessories and modifications.
Accessories
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 62 Thursday, May 3, 2018 1:26 PM
Before Riding
63
Accessories & Modifications
We strongly advise you not to remove any original equipment or
modify your ATV in any way that would change its design or
operation. Such changes could seriously impair your ATV’s handling,
stability, and braking, making it unsafe to ride.
Removing or modifying your lights, exhaust system, emission control
system, or other equipment can also make your ATV illegal.
Modifications
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 63 Thursday, May 3, 2018 1:26 PM
Before Riding
64
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 64 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
65
Basic Operation & Riding
(cont’d)
Basic O peration & R iding
This section gives basic riding instructions, including how to start and
stop your engine, and how to use the throttle and brakes. It also
provides important information on riding with cargo.
To protect your new engine and enjoy optimum performance and
service life, refer to Break-in Guidelines (page 239).
Safe Riding Precautions .............................................................. 67
Off-road Use Only.................................................................... 67
Keep Hands and Feet on Controls............................................ 68
Control Speed ......................................................................... 69
Use Care on Unfamiliar or Rough Terrain ................................. 69
Do Not Perform Stunts............................................................. 70
Starting & Stopping the Engine................................................... 71
Preparation.............................................................................. 72
Starting Procedure................................................................... 73
Flooded Engine........................................................................ 73
Bank Angle Sensor Ignition Cut-off System .............................. 74
Stalled Engine.......................................................................... 74
How to Stop the Engine........................................................... 75
Using the Recoil Starter............................................................ 76
Shifting Gears............................................................................. 77
Riding in Reverse ........................................................................ 83
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 65 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
66
Basic Operation & Riding
Braking....................................................................................... 85
Riding Your ATV......................................................................... 87
Making Turns .......................................................................... 87
Skidding or Sliding................................................................... 89
Riding Up Hills ......................................................................... 90
Riding Down Hills .................................................................... 94
Crossing or Turning on Hills or Slopes...................................... 95
Riding Over Obstacles .............................................................. 97
Riding Through Water ............................................................. 98
Parking..................................................................................... 100
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 66 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
67
(cont’d)
Safe Riding Precautions
Before riding your ATV for the first time, please review the ATV
Safety section beginning on page 1, and the Before Riding section
beginning on page 49.
Even if you have ridden other ATVs, take time to become familiar
with how this ATV works and handles. Practice in a safe area until
you build your skills and get accustomed to the ATV’s size and
weight.
Your ATV and its tyres are designed and manufactured for off-road
use only, not for pavement. Riding on pavement can affect handling
and control. You should not ride your ATV on pavement.
When riding off-road, also remember to always obey local off-road
riding laws and regulations. Obtain permission to ride on private
property. Avoid posted areas and obey “no trespassing” signs.
Off-road Use Only
WARNING
3
WARNING
Operating this ATV on paved surfaces may
seriously affect handling and control of the
ATV, and may cause the vehicle to go out of
control.
Never operate the ATV on any paved surfaces,
including sidewalks, driveways, parking lots
and streets.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 67 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
68
Safe Riding Precautions
You should never ride your ATV on public streets, roads or highways,
even if they are not paved. Drivers of street vehicles may have difficulty
seeing and avoiding you, which could lead to a collision. In many states
it is illegal to operate ATVs on public streets, roads and highways.
Always keep both hands on the handlebars and both feet on the footpegs
when riding your ATV. This is important to maintain your balance and to
control the vehicle. Removing even one hand from the handlebars or one
foot from the footpegs can reduce your ability to control the ATV or could
cause you to lose your balance and fall off the ATV.
WARNING
3
WARNING
Operating this ATV on public streets, roads or
highways could cause you to collide with
another vehicle.
Never operate this ATV on any public street,
road or highway, even a dirt or gravel one.
Keep Hands and Feet on Controls
WARNING
3
WARNING
Removing hands from handlebars or feet
from footpegs during operation can reduce
your ability to control the ATV or could cause
you to lose your balance and fall off of the
ATV.
Always keep both hands on the handlebars
and both feet on the footpegs of your ATV
during operation.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 68 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
69
Safe Riding Precautions
(cont’d)
Riding at excessive speed increases the chance of a crash. In
choosing a proper speed, you need to consider the capability of your
vehicle, the terrain, visibility and other operating conditions, plus
your own skills and experience.
Before riding in a new area, always check the terrain thoroughly.
Don’t ride fast on unfamiliar terrain or when visibility is limited. (It’s
sometimes difficult to see obstructions like hidden rocks, bumps, or
holes in time to react.)
Control Speed
WARNING
3
WARNING
Operating this ATV at excessive speeds
increases your chances of losing control of the
ATV, which can result in an accident.
Always go at a speed that is proper for your
vehicle, the terrain, visibility and other
operating conditions, and your experience.
Use Care on Unfamiliar or Rough Terrain
WARNING
3
WARNING
Failure to use extra care when operating this
ATV on unfamiliar terrain could result in the
ATV overturning or going out of control.
Go slowly and be extra careful when
operating on unfamiliar terrain. Always be
alert to changing terrain conditions when
operating the ATV.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 69 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
70
Safe Riding Precautions
Never ride past the limit of visibility. Maintain a safe distance
between your ATV and other off-road vehicles. Always exercise
caution, and use extra care on rough, slippery and loose terrain.
You should always operate your ATV in a safe and reasonable
manner. When riding, always keep all four wheels on the ground.
WARNING
3
WARNING
Failure to use extra care when operating on
excessively rough, slippery or loose terrain
could cause loss of traction or vehicle control,
which could result in an accident, including an
overturn.
Do not operate on excessively rough, slippery
or loose terrain until you have learned and
practiced the skills necessary to control the
ATV on such terrain. Always be especially
cautious on these kinds of terrain.
Do Not Perform Stunts
WARNING
3
WARNING
Attempting wheelies, jumps, and other stunts
increases the chance of an accident, including
an overturn.
Never attempt stunts, such as wheelies or
jumps. Don’t try to show off.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 70 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
71
Starting & Stopping the Engine
Always follow the proper starting procedure described below.
For your safety, avoid starting or operating the engine in an enclosed
area such as a garage. Your ATV’s exhaust contains poisonous
carbon monoxide gas which can collect rapidly in an enclosed area
and cause illness or death.
If you turn the ignition switch to the OFF (w) position while in
reverse, the transmission will automatically return to neutral (N)
when the ignition switch is turned to the ON (q) position.
The starter motor will operate when the transmission is in neutral or
the front brake lever is pulled in.
WARNING
3
WARNING
Running the engine of your vehicle while in
an enclosed or even partially enclosed area
can cause a rapid build-up of toxic carbon
monoxide gas.
Breathing this colourless, odorless gas can
quickly cause unconsciousness and lead to
death.
Only run your vehicle's engine when it is
located in a well ventilated area outdoors.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 71 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
72
Starting & Stopping the Engine
1.
Before starting, make sure the vehicle is on a level surface and
lock the parking brake (page 44).
2.
Turn the ignition switch (1) to ON (q).
Confirm the following:
• The transmission is in neutral, the neutral indicator (2) is ON and
the gear position indicator shows “N”.
• The engine stop switch (3) is set to RUN (e).
Preparation
(1)
(1) ignition switch
(3)
(2) neutral indicator
(3) engine stop switch
(2)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 72 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
73
Starting & Stopping the Engine
This ATV is fuel-injected with an automatic choke.
Follow the procedure indicated below.
Any Air Temperature
• Press the start button with the throttle completely closed.
The engine will not start if the throttle is fully open (because the
electronic control module cuts off the fuel supply).
Snapping the throttle or fast idling for more than 5 minutes may
cause exhaust pipe and muffler discolourations.
If the engine fails to start after repeated attempts, it may be flooded
with excess fuel. To clear a flooded engine:
1.
Leave the engine stop switch set to RUN (e).
2.
Open the throttle fully.
3.
Press the start button for 5 seconds (or operate the recoil starter
several times).
4.
Follow the normal starting procedure.
5.
If the engine starts, then open the throttle slightly if idling is
unstable.
If the engine does not start, wait 10 seconds, then follow steps 1
– 4 again.
If the engine still won’t start, refer to If Your Engine Quits or Won’t
Start, page 208.
Starting Procedure
Flooded Engine
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 73 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
74
Starting & Stopping the Engine
Your vehicle’s banking (lean angle) sensor system is designed to
automatically stop the engine if the vehicle is overturned.
Before restarting the engine, you must turn the ignition switch to the
OFF (w) position and then back to ON (q). The engine will not restart
until you perform this procedure.
You can restart the engine while the vehicle is stopped by squeezing
the front brake lever and pressing the start button.
Do not press the throttle lever while starting in gear. The engine will
not start if the throttle is fully open (because the electronic control
module cuts off the fuel supply).
Once you have started the engine, release the front brake lever, then
apply throttle gradually.
Bank Angle Sensor Ignition Cut-off System
Stalled Engine
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 74 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
75
Starting & Stopping the Engine
Normal Engine Stop
To stop the engine, make sure the transmission is in neutral by
checking that the neutral indicator light is on, then turn the ignition
switch to OFF (w).
The engine stop switch should normally remain in the RUN (e)
position even when the engine is OFF.
If your ATV is stopped with the engine stop switch OFF (r) and the
ignition switch ON (q), the battery will discharge.
Emergency Engine Stop
To stop the engine in an emergency, use the engine stop switch. To
operate, slide the switch to either OFF (r) position.
How to Stop the Engine
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 75 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
76
Starting & Stopping the Engine
The recoil starter is used to start the engine when the battery is low.
To operate the recoil starter:
1.
Check that the transmission is in neutral.
2.
Grasp the starter grip (1) firmly, then pull it out slowly
approximately 100 mm (4 in).
3.
Pull the grip up briskly and fully.
4.
After the engine starts, allow the starter grip to return slowly.
If the starter grip does not return smoothly (because of dirt in the
assembly), see your dealer.
Using the Recoil Starter
RIGHT SIDE
(1)
(1) starter grip
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 76 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
77
Shifting Gears
Your ATV has two shift modes: AUTO (automatic shift mode) and
ESP (manual shift mode).
You can select the desired shift mode with the drive mode select
switch.
AUTO (automatic shift mode):
Use this mode for everyday riding. The transmission automatically
shifts to keep the engine at the best speed for the riding condition.
The gear position indicator will show “D” for forward gears, “N” for
neutral, and “R” for reverse. Select gear position with the gear shift
switches.
ESP (manual shift mode):
In this mode, you can shift gears much like a manual transmission,
but without operating a clutch. You can select five forward gears,
neutral and reverse by operating the gear shift switches.
The gear position indicator will show “1, 2, 3, 4, or 5” for forward
gears, “N” for neutral, and “R” for reverse.
When you tow a trailer, select the 1st shift position for proper
performance.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 77 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
78
Shifting Gears
Drive mode select (AUTO/ESP)
The drive mode select switch (1) is located on the right handlebar.
To select the drive mode, release the throttle, then slide the drive
mode select switch to the desired position. With the throttle fully
closed, the drive mode can be changed while riding.
Gear Position selection AUTO (D/N/R), Manual (1-5/N/R)
Two gearshift switches are located next to the left handlebar grip:
Upshift ( ) and downshift ( ).
To shift between a forward gear (D or 1), neutral (N), or reverse (R),
bring the ATV to complete stop, and press a shift switch to select gear
position.
Select neutral (N) when you start the engine, or if it is necessary to
stop briefly with the engine idling.
The gear position indicator shows “N”.
(1)
(1) drive mode select switch
AUTO (automatic
shift mode)
RIGHT HANDLEBAR
ESP (manual
shift mode)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 78 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
79
Shifting Gears
To select a forward gear (D or 1) from neutral (N), press the upshift
switch (2) once.
• In AUTO (automatic shift mode) the gear position indicator shows
“D”
• In ESP (manual shift mode) the gear position indicator shows “1”
To select reverse (R) from neutral (N), use the P/R lever and press the
downshift switch (3) once. See Riding in Reverse (page 83).
Driving in AUTO (automatic shift mode):
After starting the engine and letting it warm up, follow these
procedures:
1.
With the transmission in neutral, release the parking brake
(page 44), but continue to squeeze the rear brake lever/parking
brake lever.
2.
With the throttle closed, select the AUTO (automatic shift mode),
and then press the upshift switch once to shift into drive (D).
3.
The gear position indicator shows “D”.
4.
Release the rear brake lever/parking brake lever and increase
engine speed by gradually opening the throttle.
LEFT HANDLEBAR
(2)
(2) upshift switch
AUTO
(automatic
shift mode)
ESP (manual
shift mode)
(3) downshift switch
(3)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 79 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
80
Shifting Gears
Driving in ESP (manual shift mode):
After starting the engine and letting it warm up, follow these procedures:
1.
With the transmission in neutral, release the parking brake
(page 44), but continue to squeeze the rear brake lever/parking
brake lever.
2.
With the throttle closed, select the ESP (manual shift mode), and
then press the upshift switch ( ) (2) once to shift into 1st gear.
3.
The gear position indicator shows “1”.
4.
Release the rear brake lever/parking brake lever and increase
engine speed by gradually opening the throttle.
5.
When speed increases, release the throttle and upshift to 2nd
gear by pressing the upshift switch once.
6.
Repeat this sequence to progressively upshift to 3rd, 4th and 5th
(top) gear.
7.
To downshift, press the downshift switch ( ) (3) once.
Remember to close the throttle each time you shift to the next
lower gear.
UPSHIFTING SEQUENCE
(A)
(2) upshift switch
(3) downshift switch
(2)
(3)
DOWNSHIFTING SEQUENCE
(A)
(A) press
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 80 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
81
Shifting Gears
The transmission cannot be upshifted from neutral to 1st gear or
D-mode when the engine speed is above 2,300 rpm or the ground
speed is above 3 km/h (2 mph).
The transmission cannot be downshifted from 1st gear or D-mode to
neutral when the ground speed is above 1.5 km/h (1 mph) or engine
speed is above 2,300 rpm.
In ESP (manual shift mode), if the ground speed decreases under a
set speed (see table) the transmission will automatically downshift to
the next lower gear.
If the ATV is at a complete stop, 2nd gear, 3rd gear, 4th gear or 5th
gear cannot be selected.
If the electric shift system malfunctions, the transmission cannot be
shifted by pressing the gearshift switches. See your dealer. (In an
emergency, a gear may be selected manually so you may move the
vehicle. See Emergency Gear Selection & Operation page 214).
Gear
Down Shift Speed
KM/H MPH
From 5th to 4th 12 7
From 4th to 3rd 10 6
From 3rd to 2nd 8 5
From 2nd to 1st 5 3
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 81 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
82
Shifting Gears
Learning when to shift gears comes with experience. Keep the
following tips in mind:
• As a general rule, shift while moving in a straight line.
• Close the throttle completely before shifting. Improper shifting
may damage the engine, transmission, and drivetrain.
• Upshift to a higher gear or reduce throttle before engine rpm
(speed) gets too high. Learn the relationship between engine
sound and the normal shifting points.
• Downshift to a lower gear before you feel the engine laboring
(lugging) at low rpm.
• Avoid downshifting to help slow your ATV when engine rpm is
high. Downshifting when engine speed is near its allowable
maximum may over-rev the engine and possibly cause damage.
• To prevent transmission damage, do not coast or tow the ATV for
long distances with the engine off.
Recommended Shift Points
Ride in the highest gear that lets the engine run and accelerate
smoothly. This will give you good fuel economy and effective
emissions control.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 82 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
83
(cont’d)
Riding in Reverse
If you need to ride in reverse, make sure the area behind you is clear
and only operate the ATV at low speed.
1.
Bring the vehicle to a complete stop, then make sure the
transmission is in neutral.
2.
Be sure there are no obstacles or people in the way.
3.
Fully rotate the P/R lever (1) counterclockwise to engage the P/R
lever with the reverse assist lever (2).
4.
While continuing to hold the P/R lever, squeeze the rear brake
lever/parking brake lever (3), then press the downshift switch (4)
once to shift into “R” (reverse) gear.
5.
Make sure that the reverse indicator comes on and the gear
position indicator shows “R”.
WARNING
3
WARNING
Improperly operating in reverse could cause
you to hit an obstacle or person behind you,
resulting in serious injury.
Make sure there are no obstacles or people
behind you before selecting reverse gear.
When it is safe to proceed, go slowly.
LEFT HANDLEBAR
(1)
(2) reverse assist lever
(3)
(3) rear brake lever/parking
brake lever
(5)
(4)
(4) downshift switch
(5) upshift switch
(2)
(1) P/R lever
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 83 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
84
Riding in Reverse
NOTICE
Your ATV may be equipped with a reverse speed limiter, which helps
the vehicle to maintain a safe speed while riding in reverse gear.
6.
Release the rear brake lever/parking brake lever.
7.
Open the throttle gradually and ride slowly. Do not open the
throttle suddenly or make abrupt turns.
8.
To stop, close the throttle and gradually apply both the front and
rear brakes. Do not abruptly apply the rear brake alone.
9.
To shift out of reverse and into neutral, press the upshift switch
(5) once to shift into “N” (neutral) gear.
The transmission cannot be shifted from neutral back into reverse
when the engine speed is above 2,300 rpm or speed of your ATV is
above 3 km/h (2 mph).
The transmission cannot be shifted from reverse up to neutral when
the engine speed is above 2,300 rpm or if the speed of your ATV is
above 1.5 km/h (1 mph).
If you turn the ignition switch to the OFF (w) position while in
reverse, the transmission will automatically return to neutral (N)
when the ignition switch is turned to the ON (q) position.
WARNING
3
WARNING
Applying only the rear brake abruptly when
operating in reverse gear could cause the
front wheels to lift off the ground and the
ATV could overturn backwards.
Carefully apply both the front and rear brakes
when stopping in reverse gear.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 84 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
85
Braking
Your ATV is equipped with disc brakes on both front wheels which
are hydraulically activated by operating the right brake lever. A single
drum brake on the rear axle housing is mechanically activated by
depressing the brake pedal or operating the left brake lever.
Although the front and rear brakes have separate controls, all four
wheels are interconnected when your ATV is in the 4WD mode. So
operating any brake control in the 4WD mode will cause braking at
both the front and rear wheels.
As a general rule, the front braking system provides about 70
percent of total stopping power.
For full braking effectiveness, use both the pedal and lever
simultaneously. Using both braking systems will stop your ATV faster
with greater stability.
To slow or stop, apply the brake lever and brake pedal smoothly, while
downshifting to match your speed when your ATV is in the ESP (manual
shift mode).
Gradually increase braking as you feel the brakes slowing your speed.
The increase in engine compression from downshifting will help slow
your ATV when your ATV is in the ESP (manual shift mode).
Applying the brakes too hard may cause the wheels to lock and slide,
reducing control of your ATV. If this happens, release the brake
controls, steer straight ahead until you regain control, then reapply
the brakes more gently.
When possible, reduce your speed or complete braking before
entering a turn. Avoid braking or closing the throttle quickly while
turning. Either action may cause one or more wheels to slip and
reduce your control of your ATV.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 85 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
86
Braking
Your ability to brake in a turn and to brake hard in an emergency
situation are important riding skills.
When descending a long, steep grade, use engine compression
braking by downshifting (in the ESP mode), with intermittent use of
both brakes. Continuous brake application can overheat the brakes
and reduce their effectiveness.
Riding with your foot resting on the brake pedal or your hands on
the brake levers may overheat the brakes, reducing effectiveness.
For information on how to apply the brakes in various riding
situations, see the following section, Riding Your ATV.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 86 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
87
(cont’d)
Riding Your ATV
Learn how to turn your ATV properly. Practice the techniques
outlined in this section on level ground and at low speeds until you
are confident in making turns.
Making Turns
WARNING
3
WARNING
Turning improperly can make the ATV go out
of control, causing a collision or overturn.
• Always follow proper procedures for
turning as described in this owner’s manual.
• Practice turning at low speeds before
attempting to turn at faster speeds.
• Do not turn at excessive speeds.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 87 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
88
Riding Your ATV
To make a turn on level ground: Steer the handlebar and lean your
body toward the inside of the turn. Leaning helps balance the
vehicle, and it feels more comfortable. Leaning into a turn is an
important technique to master in riding an ATV.
To make a sharp turn at low speed:
It helps to shift your body slightly
forward on the seat, and lean inside, as you steer the handlebar.
Shifting weight forward allows the rear wheels to turn easier, and it
also improves front-wheel steering.
To make a turn from a full stop:
Apply the throttle gradually when
you turn and start at the same time. Remember to shift your body
forward to make sharp low-speed turns and whenever you turn
while accelerating from a full stop.
Lean your body to the inside of a turn and forward.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 88 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
89
Riding Your ATV
The terrain surface can be a major factor affecting turns. Skidding
during a turn is more likely to occur on slippery surfaces, such as
snow, ice, mud and loose gravel. If you skid on ice, you may lose all
directional control. To avoid skidding on slippery terrain, keep your
speed low and ride with caution.
If your ATV skids sideways during a turn, steer in the direction of the
skid. Avoid hard braking or accelerating until you have regained
directional control.
Skidding or Sliding
WARNING
3
WARNING
Skidding or sliding improperly may cause you
to lose control of this ATV. You may also
regain traction unexpectedly, which may
cause the ATV to overturn.
Learn to safely control skidding by practicing
at low speeds and on level, smooth terrain.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 89 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
90
Riding Your ATV
The ATV’s ability to safely climb hills largely depends on the rider’s
skill and judgement. Begin by practicing on smooth, gentle slopes.
As you gain experience, you’ll learn the hazards and your own
limitations. You may then proceed to ride on more difficult terrain.
However, you must be able to decide which hills or hazards might
cause the ATV to overturn. Avoid excessively steep hills.
When climbing hills, you must shift weight toward the front wheels
to help keep them on the ground. To do this, shift your body slightly
forward on the seat and lean forward. For greater weight shift, move
your body farther forward and lean forward.
Riding Up Hills
WARNING
3
WARNING
Operating on excessively steep hills can cause
the vehicle to overturn more easily than
operating on level surfaces or small hills.
Never operate the ATV on hills too steep for
the ATV or for your abilities.
WARNING
3
WARNING
Climbing hills improperly could cause loss of
control or cause the ATV to overturn.
Always follow proper procedures for climbing
hills as described in this owner’s manual.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 90 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
91
Riding Your ATV
• Always check the terrain carefully before you start up any hill.
• Never climb hills with excessively slippery or loose surfaces.
• To climb a hill, take a running start in an appropriate gear and
speed for the conditions. Maintain a steady speed as you ascend
the hill.
• Never open the throttle suddenly or make sudden gear changes.
The ATV could flip over backward.
• Never go over the top of any hill at high speed. An obstacle, a
sharp drop, or another vehicle or person could be on the other
side of the hill.
Shift weight forward when climbing hills.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 91 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
92
Riding Your ATV
Stalling the ATV and/or Rolling Backwards:
If you incorrectly estimate climbing capability or terrain conditions,
the ATV may not have enough power or traction to continue uphill.
If this happens, the ATV can stall and/or roll backwards.
What to do if the ATV stalls or rolls backwards when climbing a hill:
If you are about to lose all forward speed:
1.
Using the front and rear brakes together, bring the ATV to a stop
with the vehicle pointed straight uphill.
2.
Get off the ATV while you continue holding the brakes.
3.
Shift into neutral, set the parking brake and turn the engine off.
4.
Then assess the situation.
If the ATV starts rolling backwards before you begin braking:
1.
Keep your weight uphill.
2.
Carefully apply the front brakes first, then carefully apply the rear
brake. Do not apply either brake abruptly if you are rolling
backwards, or the vehicle may overturn.
If the ATV continues sliding backwards:
After you’ve applied the brakes, get off and away from the vehicle.
Remember that operating any brake control in the 4WD mode will
cause braking at both the front and rear wheels.
WARNING
3
WARNING
Stalling, rolling backwards or improperly
dismounting while climbing a hill could result
in the ATV overturning.
Always follow proper procedures for climbing
a hill as described in this owner’s manual.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 92 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
93
Riding Your ATV
What to do after the ATV has stalled or rolled backwards:
If the hill is too steep or too slippery, or if you have any doubt
whether you can safely walk the ATV back down the hill, leave the
vehicle where it is and get help. If possible, block the wheels so the
vehicle doesn’t roll backwards.
If the hill is not too steep and you have good footing, you may be
able to walk the ATV back down the hill. Make sure your intended
path is clear in case you lose control of the ATV.
1.
Stand with your body facing downhill, beside the vehicle so you
can reach the rear brake lever/parking brake lever with your right
hand.
2.
Be sure your legs are clear of the wheels.
Check your footing.
3.
Slowly and carefully back the ATV down the hill using the rear
brake lever/parking brake lever to control speed.
4.
If you lose control of the ATV, for your safety, get away from the
vehicle.
Be sure your legs are
clear of the wheels.
Body position for
backing down a hill.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 93 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
94
Riding Your ATV
It’s usually advisable to descend hills with the ATV pointed straight
downhill. Avoid angles that would cause the vehicle to lean sharply
to one side.
As you approach a downhill, stop and survey the terrain below.
Never ride past the limit of your visibility. Never go down a hill at
high speed.
Riding Down Hills
WARNING
3
WARNING
Going down a hill improperly could cause loss
of control or cause the ATV to overturn.
Always follow proper procedures for going
down hills as described in this owner’s
manual.
On downhills, shift your weight back.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 94 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
95
Riding Your ATV
When you’ve selected a safe downhill path, shift into a lower gear (in
the ESP mode), shift your weight back with your arms extended and
braced against the handlebar, then go down slowly with the throttle
closed.
Use mainly the rear brake to control speed. Avoid using either the
front brake or rear brake hard or abruptly when riding down hills.
Remember that operating any brake control in the 4WD mode will
cause braking at both the front and rear wheels.
Remember, braking effectiveness is reduced on any hill with a loose
surface.
Riding on hills or slopes is different from riding on level terrain. Be
careful when riding on any hill. Make sure that you practice on
gentle, smooth slopes before attempting to ride on steeper or more
difficult terrain.
Crossing or Turning on Hills or Slopes
WARNING
3
WARNING
Improperly crossing hills or turning on hills
could cause loss of control or cause the ATV to
overturn.
Always follow proper procedures for crossing
or turning on slopes as described in this
owner’s manual. Avoid crossing steep hills if
possible.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 95 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
96
Riding Your ATV
Crossing Hills or Slopes
• To maintain balance and stability when riding across a slope, you
need to shift weight toward the uphill side of the vehicle. To do
this, move your body off the centre of the seat and lean toward
the uphill side.
• On a slippery or loose surface, you may also need to steer slightly
uphill to maintain a straight course across the slope.
• Avoid crossing hills that are excessively steep, slippery or rough.
Making Turns on Slopes
• Compared to riding on level ground, you may need to shift more
weight and lean more when making turns on slopes.
• Do not make turns on any slopes until you have first mastered the
techniques for making turns on level terrain.
Shift weight uphill when crossing slopes.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 96 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
97
Riding Your ATV
Before operating in a new area, check for obstacles. Watch out for
bumps, rain ruts, potholes and other obstacles in the terrain. When
you approach any obstacle, reduce your speed and be prepared to
stop.
Never try to ride over large obstacles, such as large rocks or fallen
logs.
Riding Over Obstacles
WARNING
3
WARNING
Improperly operating over obstacles could
cause loss of control or a collision and could
cause the ATV to overturn.
When you go over obstacles, always follow
proper procedures as described in this
owner’s manual.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 97 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
98
Riding Your ATV
Your ATV is designed to travel through water up to approximately
254 mm (10 inches) deep. Before crossing a stream, make sure the
water is not too deep or flowing too fast.
NOTICE
Water entering the muffler may damage the oxygen sensor and
result in emissions control system malfunction. Have your ATV dealer
inspect the oxygen sensor immediately after water enters the
muffler.
1.
Choose a path where both banks have gradual slopes.
2.
Proceed through the water at a slow, steady speed.
3.
Watch out for submerged obstacles and slippery rocks.
4.
Avoid getting the spark plug or air cleaner wet, as this would
cause the engine to stop.
5.
After leaving the water, always test both the front and rear
brakes.
Riding Through Water
WARNING
3
WARNING
The ATV tyres have some ability to float.
Operating this ATV through deep or fast-
flowing water may cause a loss of traction
and loss of control, which could lead to an
accident.
Never operate this ATV in fast-flowing water
or in water deeper than that specified in this
owner’s manual.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 98 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
99
Riding Your ATV
• Riding through water can make the brakes less effective than
normal, and may reduce stopping ability.
• If necessary, apply the brakes repeatedly until they dry out and
operate normally.
• If the brakes don’t regain effectiveness, stop your ATV and
follow the procedures on page 173.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 99 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
100
Parking
1.
Look for level parking area. Make sure the ground surface is firm.
2.
After bringing your ATV to a stop, hold the brakes while you shift
into neutral.
3.
Set the parking brake.
4.
Turn the ignition switch to OFF (w ).
If it is necessary to start the engine when your ATV in gear and is
stopped on a grade, rock the vehicle back and forth to allow shifting
the transmission into neutral.
The brake light is activated by applying the parking brake. When
using the parking brake, be sure to turn the ignition switch to OFF
(w) to avoid discharging the battery.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 100 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
101
Parking
Parking on a Steep Incline or a Loose or Slippery Surface
If you must park your ATV on a steep incline or loose or slippery
surface, use the following procedure:
1.
While holding the brakes, set the parking brake.
2.
Turn the ignition switch to OFF (w ) and release the brakes.
3.
If the ATV begins to move, either while sitting on it or after you
dismount, find a better parking location.
4.
If rocks or other objects are available, you can block the wheels
as shown for additional security.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 101 Thursday, May 3, 2018 1:26 PM
Basic Operation & Riding
102
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 102 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
103
Servicing Your Honda
(cont’d)
Servicing Yo ur Honda
To help keep your ATV in good shape, this section includes a
Maintenance Schedule for required service and step-by-step
instructions for specific maintenance tasks. You’ll also find important
safety precautions, information on fuels and oils, and tips for
keeping your Honda looking good.
For information about replacing fuses, see page 221.
Before You Service Your Honda
The Importance of Maintenance............................................... 105
Maintenance Safety.................................................................. 106
Important Safety Precautions ................................................. 107
Maintenance Schedule ............................................................. 108
Maintenance Record................................................................. 112
Service Preparations
Maintenance Component Locations ......................................... 113
Tool Kit .................................................................................... 116
Owner’s Manual Storage .......................................................... 117
Seat Removal............................................................................ 118
Tank Cover Assembly Removal ................................................. 119
Rear Fender Cover Removal ...................................................... 121
Clip Removal ............................................................................ 122
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 103 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
104
Servicing Your Honda
Service Procedures
Fluids & Filters
Fuel.......................................................................................... 123
Engine Oil & Filter..................................................................... 126
Rear Final Gear Oil.................................................................... 134
Front Final Gear Oil................................................................... 137
Coolant.................................................................................... 139
Air Cleaner............................................................................... 146
Engine
Throttle .................................................................................... 152
Reverse Lock System................................................................. 154
Spark Plug ................................................................................ 155
Valves....................................................................................... 158
Spark Arrester .......................................................................... 159
Chassis
Suspension ............................................................................... 160
Brakes ...................................................................................... 163
Tyres ........................................................................................ 174
Guards ..................................................................................... 180
Drivetrain Boots........................................................................ 182
Electrical
Battery ..................................................................................... 184
Appearance Care...................................................................... 189
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 104 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
105
Before You Service Your Honda
The Importance of Maintenance
A well-maintained ATV is essential for safe, economical, and
trouble-free riding. It will also help reduce air pollution. Careful pre-
ride inspections and good maintenance are especially important
because your ATV is designed to be ridden over rough off-road
terrain.
To help you properly care for your ATV, this section of the manual
provides a Maintenance Schedule. The service intervals in this
schedule are based on average riding conditions.
Frequent servicing of the air cleaner is especially important to help
you avoid a possible costly engine repair.
If your ATV overturns or is involved in a crash, be sure your dealer
inspects all major parts, even if you are able to make some repairs.
WARNING
3
WARNING
Improperly maintaining this ATV or failing to
correct a problem before you ride can cause a
crash in which you can be seriously hurt or
killed.
Always follow the inspection and
maintenance recommendations and
schedules in this owner’s manual.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 105 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
106
Maintenance Safety
This section includes instructions on how to perform some important
maintenance tasks. If you have basic mechanical skills, you can
perform many of these tasks with the tools provided with your ATV.
Other tasks that are more difficult and require special tools are best
performed by professionals. Removing the wheels should normally
be handled only by a Honda technician or other qualified mechanic.
Instructions are included in this manual only to assist in emergency
service.
Some of the most important safety precautions follow. However, we
cannot warn you of every conceivable hazard that can arise in
performing maintenance. Only you can decide whether or not you
should perform a given task.
WARNING
3
WARNING
Failure to properly follow maintenance
instructions and precautions can cause you to
be seriously hurt or killed.
Always follow the procedures and
precautions in this owner’s manual.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 106 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
107
Maintenance Safety
• Make sure the engine is off before you begin any maintenance or
repairs. This will help eliminate several potential hazards:
Carbon monoxide poisoning from engine exhaust. Be sure
there is adequate ventilation whenever you operate the engine.
Burns from hot ATV parts. Let the engine and exhaust system
cool before touching.
Injury from moving parts. Do not run the engine unless
instructed to do so.
• Read the instructions before you begin, and make sure you have
the tools and skills required.
• To reduce the possibility of a fire or explosion, be careful when
working around petrol. Use only non-flammable solvent, not
petrol, to clean parts. Keep cigarettes, sparks, and flames away
from all fuel-related parts.
Remember that your Honda dealer knows your ATV best and is fully
equipped to maintain and repair it. To ensure the best quality and
reliability, use only new Honda Genuine Parts or other equivalents
for repair and replacement.
Important Safety Precautions
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 107 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
108
Maintenance Schedule
The required Maintenance Schedule that follows specifies how often
you should have your ATV serviced, and what things need attention.
It is essential to have your ATV serviced as scheduled to maintain
safe, dependable performance and proper emission control.
The service intervals in this Maintenance Schedule are based on
average riding conditions. Some items will need more frequent
service if you ride in unusually wet or dusty areas or at full throttle.
Consult your dealer for recommendations applicable to your
individual needs and use.
Some items in the Maintenance Schedule can be performed with
basic mechanical skills and hand tools. Procedures for these items
are provided in this manual. Other items involve more extensive
procedures and may require special training, tools, and equipment.
We recommend that you have your dealer perform these tasks
unless you have advanced mechanical skills and the required tools
and equipment. Procedures for such items in this schedule are
provided in an official Honda Shop Manual.
If you do not feel capable of performing a given task or need
assistance, remember that your Honda dealer knows your ATV best
and is fully equipped to maintain and repair it. If you decide to do
your own maintenance, use only Honda Genuine Parts or their
equivalents for repair or replacement to ensure the best quality and
reliability.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 108 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
109
Maintenance Schedule
Perform the pre-ride inspection (page 55) and owner maintenance
on this section at each scheduled maintenance period.
Each item on the maintenance schedule requires some mechanical
knowledge. Certain items (particularly those marked
*
and
**
) may
require more technical information and tools. Consult your dealer.
Summary of Maintenance Schedule Notes & Procedures:
NOTES:
1.
Service more frequently when riding in dusty areas, sand or
snow.
2.
Service more frequently after riding in very wet or muddy
conditions.
3.
Replace every 2 years. Replacement requires mechanical skill.
* Should be serviced by your dealer, unless you have the proper
tools and service data, and is mechanically qualified. Refer to
the official Honda Shop Manual.
** In the interest of safety, we recommend these items be serviced
only by your dealer.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 109 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
110
Maintenance Schedule
Maintenance Procedures:
I: inspect and clean, adjust, lubricate, or replace, if necessary
C: clean
A: adjust
L: lubricate
R: replace
* Should be serviced by your dealer, unless you have the proper tools and service data, and is
mechanically qualified. Refer to the official Honda Shop Manual.
FREQUENCY
WHICHEVER
COMES FIRST
INITIAL REGULAR
Refer to
page
MAINT. MAINT. INTERVAL
km 150 1000 2000
mi 100 600 1200
MONTH
1612
ITEMS NOTE HOURS 20 100 200
* FUEL LINE I —
* THROTTLE OPERATION I 152
AIR CLEANER
NOTE 1
CC146
AIR CLEANER HOUSING
DRAIN TUBE
NOTE 2
II151
SPARK PLUG I I 155
* VALVE CLEARANCE I I I 158
ENGINE OIL INITIAL=
150 km (100 mi), 20
operating hours or 1
month: R
126
ENGINE OIL FILTER REGULAR=
Every 1,000 km (600 mi),
100 operating hours or 12
months: R
131
* ENGINE IDLE SPEED I I I —
RADIATOR COOLANT
NOTE 3
II139
* COOLING SYSTEM
NOTE 2
II—
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 110 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
111
Maintenance Schedule
* Should be serviced by your dealer, unless you have the proper tools and service data, and is
mechanically qualified. Refer to the official Honda Shop Manual.
** In the interest of safety, we recommend these items be serviced only by your dealer.
FREQUENCY
WHICHEVER
COMES FIRST
INITIAL REGULAR
Refer to
page
MAINT. MAINT. INTERVAL
km 150 1000 2000
mi 100 600 1200
MONTH
1612
ITEMS NOTE HOURS 20 100 200
DRIVETRAIN BOOTS I I 182
FRONT/REAR FINAL GEAR
OIL
(R: EVERY
2 YEARS)
I 134,137
* 2WD/4WD SELECT SYSTEM I —
* BRAKE FLUID
NOTE 3
II164
* BRAKE SHOES WEAR
NOTE 1, 2
I171
* BRAKE PADS WEAR
NOTE 1, 2
I166
* BRAKE LIGHT SWITCH I I I 172
BRAKE SYSTEM I I I 163
* REVERSE LOCK SYSTEM I I I 154
GUARDS I I 180
* SUSPENSION I I 160
* SPARK ARRESTER C C 159
* NUTS, BOLTS, FASTENERS I I —
** WHEELS/TYRES I I I 174
** TIE-ROD AND JOINT
BOOTS
III—
** STEERING SHAFT HOLDER
BEARINGS
I—
** STEERING SYSTEM I —
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 111 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
112
Maintenance Record
Keeping an accurate maintenance record will help ensure that your
ATV is properly maintained. Retain detailed receipts to verify the
maintenance was performed. If the ATV is sold, these receipts should
be transferred with the ATV to the new owner. Make sure whoever
performs the maintenance completes this record. All scheduled
maintenance, including the 150 km (100 mile) or 1 month or 20
hours initial maintenance, is considered a normal owner operating
cost and will be charged for by your dealer. Use the space under
Notes to record anything you want to remind yourself about or
mention to your dealer.
km (Miles) or
months or hours
ODO or
HOUR
Date Performed
By:
Notes
150 (100) or
1 or 20
1,000 (600) or
6 or 100
2,000 (1,200) or
12 or 200
3,000 (1,800) or
18 or 300
4,000 (2,400) or
24 or 400
5,000 (3,000) or
30 or 500
6,000 (3,600) or
36 or 600
7,000 (4,200) or
42 or 700
8,000 (4,800) or
48 or 800
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 112 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
113
Servic e Preparati ons
Maintenance Component
Locations
front brake fluid reservoir
front brake lever
P/R lever
fuel fill cap throttle lever
rear brake lever/
parking brake lever
reverse
assist lever
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 113 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
114
Maintenance Component
Locations
front suspension spring
pre-load adjuster
front brake
caliper
air cleaner housing
drain tube
rear brake light
switch
rear brake pedal
engine oil filter
front final gear oil drain bolt
air cleaner
front final gear oil fill cap
engine oil fill cap
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 114 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
115
Maintenance Component
Locations
owner’s manual
tool kit
gear change tool
battery
rear suspension spring
pre-load adjuster
spark plug
engine oil
dipstick
engine oil drain bolt
rear final gear oil drain bolt
rear final gear oil fill cap
rear brake
panel
fuse box
main fuse 1
air pressure gauge
main fuse 2
coolant
reserve
tank
EPS fuse
(TRX420FA2
only)
spark arrester
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 115 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
116
Tool Kit
The tool kit (1) and the gear change tool (2) are stored under the rear
fender cover (page 121).
After using the tool kit or the gear change tool, be sure to use the
rubber band (3) to fasten the tool kit and the gear change tool
securely.
The tools in the kit are sufficient to perform routine maintenance
and simple repairs. Any extensive work requiring additional tools
should be performed by your dealer.
The tool kit includes the following items:
* standard/Phillips screwdriver
* screwdriver handle
* 10 × 12 mm open end wrench
* 14 × 17 mm open end wrench
* spark plug wrench and handlebar
* pliers
* 5 mm Hex wrench
* tool box
UNDER REAR FENDER COVER
(2)
(1)
(1) tool kit (3) rubber band
(2) gear change tool
(3)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 116 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
117
Owner’s Manual Storage
Your ATV provides storage for the owner’s manual so you’ll have it
with you for easy reference. Store your owner’s manual (1) in the
plastic document bag underside of the rear fender cover (2).
The owner’s manual and air pressure gauge (3) should be stored in
the plastic document bag (4) and fastened with the rubber band (5).
To remove the rear fender cover, see page 121.
Be careful not to flood this area when washing your ATV.
(3)
(1)
(2)
(1) owner’s manual
(2) rear fender cover
(3) air pressure gauge
REAR FENDER COVER UNDERSIDE
(4)
(4) plastic document bag
(5)
(5) rubber band
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 117 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
118
Seat Removal
Refer to Safety Precautions on page 107.
The seat must be removed for the air cleaner, engine oil, engine oil
filter, spark plug, battery and fuse maintenance and to remove the
rear fender cover and tank cover assembly, to access the owner’s
manual, air pressure gauge, gear change tool, and tool kit.
Removal
1.
Pull the seat latch (1) at the rear of the seat.
2.
Slide the seat (2) back and lift it.
Installation
1.
Insert the front prongs (3) into the hooks (4) on the frame and
press the studs (5) into the grommets (6).
2.
Press down on the seat until locks.
(2) (5)
(6)
(1)
(3)
(4)
(1) seat latch
(2) seat
(3) front prongs
(4) hooks
(5) studs
(6) grommets
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 118 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
119
Tank Cover Assembly Removal
Refer to Safety Precautions on page 107.
The tank cover assembly must be removed for the engine oil, engine
oil filter and spark plug maintenance.
Removal
1.
Remove the seat (page 118).
2.
Remove the prongs (1) from the grommets (2).
3.
Remove the tank cover assembly (3) by releasing the tabs A (4)
and tabs B (5).
(2)
(1)
(3)
(5)
(1) prongs
(2) grommets
(3) tank cover assembly
(4) tabs A
(5) tabs B
(1)
(2)
(4)
(2)
RIGHT SIDE
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 119 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
120
Tank Cover Assembly Removal
Installation
Install the parts in the reverse order of removal.
Make sure that all prongs and tabs are installed securely in position.
(1) prongs
(2) grommets
(3) tank cover assembly
(4) tabs A
(5) tabs B
(1)
(2)
(4)
(1)
(3)
(2) (5) (2)
LEFT SIDE
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 120 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
121
Rear Fender Cover Removal
Refer to Safety Precautions on page 107.
The rear fender cover must be removed for battery, fuse
maintenance and to access the owner’s manual, air pressure gauge,
gear change tool and tool kit.
Removal
1.
Remove the seat (page 118).
2.
Unhook the rubber strap (1) with opening the storage
compartment (page 47).
3.
Firmly pull the prongs (2) from their grommets (3).
4.
Slide the rear fender cover (4) forward to disengage the tabs (5).
5.
Remove the rear fender cover.
Installation
Install the parts in the reverse order of removal.
(1) rubber strap
(2) prongs
(3) grommets
(4) rear fender cover
(5) tabs
(2)
(5)
(3)
(4)
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 121 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
122
Clip Removal
Removal
1.
Pull up the centre pin to release the lock.
2.
Pull out the clip of the hole.
Installation
1.
Insert the clip into the hole.
2.
Press down the centre pin securely to lock the clip.
1. 2.
1.
2.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 122 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
123
Servic e Procedur esFluids & Filters
Fuel
Refer to Safety Precautions on page 107.
Use only unleaded fuel in your Honda. If you ride your Honda in a
country where leaded fuel might be available, take precautions to
use only unleaded fuel.
Your engine is designed to use any unleaded petrol that has a pump
octane number (R + M)/2 of 86 or higher, or a research octane
number of 91 or higher. Petrol pumps at service stations normally
display the pump octane number. For information on the use of
Petrol Containing Alcohol, see page 240.
Use of lower octane petrol can cause persistent “pinging” or “spark
knock” (a loud rapping noise) which, if severe, can lead to engine
damage. Light pinging experienced while operating under a heavy
load, such as climbing a hill, is no cause for concern.
If pinging or spark knock occurs at a steady engine speed under
normal load, change brands of petrol. If pinging or spark knock
persists, consult your dealer.
Never use stale or contaminated petrol or an oil/petrol mixture.
Avoid getting dirt, dust, or water in the fuel tank.
Fuel Recommendation
type unleaded
research octane number 91 (or higher)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 123 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
124
Fuel
Fuel tank capacity, including reserve:
14.7 ℓ (3.88 US gal , 3.23 Imp gal)
Reserve capacity:
4.9 ℓ (1.29 US gal , 1.08 Imp gal)
When there is only one segment left in the fuel gauge (page 25), fuel
will be low and you should refuel as soon as possible.
Refer to Safety Precautions on page 107.
Fuel Capacity
Refueling Procedure
(1)
(1) fuel fill cap
(2) bottom of filler neck
(2)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 124 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
125
Fuel
1.
To open the fuel fill cap (1), turn it counterclockwise.
2.
Add fuel until the level reaches the bottom of the filler neck (2).
Avoid over filling the tank. There should be no fuel in the filler
neck.
3.
After refueling, turn the fuel fill cap clockwise securely.
If you replace the fuel fill cap, use only a Honda Genuine
replacement part.
WARNING
3
WARNING
Petrol is highly flammable and explosive. You
can be burned or seriously injured when
handling fuel.
• Stop the engine and keep heat, sparks and
flame away.
• Handle fuel only outdoors.
• Wipe up spills immediately.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 125 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
126
Engine Oil & Filter
Engine oil quality is a major factor that affects both the performance
and the service life of the engine.
Using the proper oil (page 127) and filter, and regularly checking,
adding, and changing oil will help extend your engine’s life. Even the
best oil wears out. Changing oil helps get rid of dirt and deposits in
the engine. Operating the engine with old or dirty oil can damage
your engine. Running the engine with insufficient oil can cause
serious damage to the engine and transmission.
Change the engine oil as specified in the maintenance schedule on
page 110. When running in very dusty conditions, oil changes
should be performed more frequently than specified in the
maintenance schedule.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 126 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
127
Engine Oil & Filter
(cont’d)
*
Suggested oils are equal in performance to SJ oils that are not
labeled as energy conserving or resource conserving on the
circular API service label.
• Your ATV does not need oil additives. Use the recommended oil.
• Do not use oils with graphite or molybdenum additives. They may
adversely affect clutch operation.
• Do not use API SH or higher oils displaying a circular API “energy
conserving” or “resource conserving” service label on the
container. They may affect lubrication and clutch performance.
• Do not use non-detergent, vegetable, or castor based racing oils.
Oil Recommendation
API classification
*
SG or higher except oils labeled as
energy conserving or resource
conserving on the circular API
service label
viscosity (weight) SAE 10W–30
JASO T 903
standard
MA
NOT
RECOMMENDED
RECOMMENDED
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 127 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
128
Engine Oil & Filter
Other viscosities shown in the following chart may be used when the
average temperature in your riding area is within the indicated
range.
JASO T 903 standard
The JASO T 903 standard is an index for engine oils for 4-stroke
motorcycle engines.
There are two classes: MA and MB.
Oil conforming to the standard is labeled on the oil container. For
example, the following label shows the MA classification.
(1)
(2)
(1) oil code
(2) oil classification
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 128 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
129
Engine Oil & Filter
(cont’d)
Refer to Safety Precautions on page 107.
Check the engine oil level each day before operating your ATV and
add if needed.
Before riding your ATV, check the engine oil level.
1.
Park your ATV on a firm, level surface.
2.
Start the engine in a well-ventilated area and let it idle for 3 – 5
minutes. If the air temperature is below 10°C (50°F), let the
engine idle for an additional 5 minutes (a total of 10 minutes).
3.
Stop the engine and wait 2 – 3 minutes.
4.
Remove the oil check lid (1).
5.
Remove the dipstick (2) from the front left crankcase cover and
wipe it clean.
6.
Insert the dipstick without screwing it in, then remove the
dipstick and check the oil level. The oil level should be between
the upper level mark (3) and the lower level mark (4) on the
dipstick.
Checking & Adding Oil
LEFT SIDE
(2) dipstick (3) upper level mark
(4) lower level mark
(2)
(4)
(3)
LEFT SIDE
(1)
(1) oil check lid
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 129 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
130
Engine Oil & Filter
7.
If the oil level is near or below the lower level mark, remove the
seat (page 118) and the tank cover assembly (page 119). Remove
the oil fill cap (5) from the front right crankcase cover and add the
specified oil into the fill cap hole, up to the upper level mark on
the dipstick.
Do not over fill.
8.
Reinstall the oil fill cap and dipstick.
9.
Install the tank cover assembly.
10.
Install the seat.
11.
Install the oil check lid.
NOTICE
Running the engine with an improper oil level can cause serious
engine damage.
RIGHT SIDE
(5) oil fill cap
(5)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 130 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
131
Engine Oil & Filter
(cont’d)
Refer to Safety Precautions on page 107.
Your ATV’s oil filter has very specific performance requirements. Use
a new Honda Genuine oil filter specified for your model or a filter of
equal quality.
NOTICE
Using the wrong oil filter may result in leaks or engine damage.
This procedure requires mechanical skill and professional tools such
as a torque wrench as well as a means for disposing of the drained
fluid (page 204). If you do not have the skills or the tools, see your
dealer.
Change the oil with the engine warm to assure complete and rapid
draining.
Drain the Engine Oil:
1.
With the ATV on the level ground, remove the seat (page 118)
and the tank cover assembly (page 119), and then remove the oil
fill cap from the front right crankcase cover.
2.
Place an oil drain pan under the crankcase and remove the
engine oil drain bolt (1) and sealing washer (2).
Changing Engine Oil & Filter
UNDER ENGINE
(1)
(1) engine oil drain bolt
(2)
(2) sealing washer
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 131 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
132
Engine Oil & Filter
Install a New Engine Oil Filter:
Place shop towels under the oil filter cover because oil will flow out.
1.
Remove the oil filter cover (1) and O-ring (2) by removing the
bolts (3). Let the remaining oil drain out. Discard the oil filter (4)
in an approved manner (page 198).
2.
Apply engine oil to a new O-ring and install it to the oil filter
cover. Then install a new oil filter. Use only the Honda Genuine
oil filter or a filter of equivalent quality specified for your model.
Using the wrong Honda filter or a non-Honda filter which is not
of equivalent quality may cause engine damage.
3.
Install a new oil filter with the rubber seal (5) facing inward,
toward the engine. Make sure the spring (6) and the “OUT-SIDE
(TOWARDS FILTER COVER)” mark (7) faces away from the
engine, toward the oil filter cover.
NOTICE
Improper installation of the oil filter can cause serious engine
damage.
(3)
(2)
(1)
(5)
(4)
(7)
RIGHT SIDE
(6)
(1) oil filter cover
(3) bolts
(5) rubber seal
(6) spring
(4) oil filter
(2) O-ring
(7) “OUT-SIDE (TOWARDS
FILTER COVER)” mark
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 132 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
133
Engine Oil & Filter
4.
Reinstall the oil filter cover, making sure the bolts are tightened
to the specified torque:
12 N·m (1.2 kgf·m , 9 lbf·ft)
5.
Pour the drained oil into a suitable container and dispose of it in
an approved manner (page 204).
NOTICE
Improper disposal of drained fluids is harmful to the environment.
Add Engine Oil:
1.
Reinstall the oil drain bolt with the new sealing washer and
tighten it to the specified torque:
25 N·m (2.5 kgf·m , 18 lbf·ft)
2.
Fill the crankcase with the recommended grade oil
approximately:
3.6 ℓ (3.8 US qt , 3.2 Imp qt)
3.
Reinstall the oil fill cap and dipstick.
4.
Start the engine and let it idle for 3 – 5 minutes.
5.
Stop the engine, wait 2 – 3 minutes and check the oil level. Make
sure the oil is between the upper and lower level marks on the
dipstick. If necessary, add more oil but do not overfill.
6.
Check that there are no oil leaks.
7.
Install the tank cover assembly (page 119).
8.
Install the seat.
If a torque wrench is not used for installation, see your dealer as
soon as possible to verify proper assembly.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 133 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
134
Rear Final Gear Oil
Refer to Safety Precautions on page 107.
Change the oil with the rear final gear at normal operating
temperature to assure complete and rapid draining.
Oil Recommendation
type hypoid gear oil
viscosity (weight) SAE 80W–90
Changing Oil
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 134 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
135
Rear Final Gear Oil
(cont’d)
1.
Park your ATV on a firm, level surface.
2.
Place an oil drain pan under the oil drain bolt (1).
3.
Remove the oil fill cap (2), O-ring, drain bolt and sealing washer.
4.
After the oil has completely drained, reinstall the drain bolt with
a new sealing washer and tighten it to the specified torque:
12 N·m (1.2 kgf·m , 9 lbf·ft)
(2)
(1) oil drain bolt
(1)
REAR
(2) oil fill cap
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 135 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
136
Rear Final Gear Oil
5.
Remove the oil level check bolt (3) and sealing washer (4).
6.
Slowly fill the rear final gear with the recommended oil until oil
start to flow out of the oil level check hole (5). Allow oil to settle
for 2 – 3 minutes before moving to next step to prevent overfilling.
85 cm
3
(2.9 US oz , 3.0 Imp oz)
7.
Coat a new O-ring with grease and install it into the fill cap
groove and tighten it to the specified torque:
12 N·m (1.2 kgf·m , 9 lbf·ft)
8.
Install the oil level check bolt with a new sealing washer and
tighten it to the specified torque:
12 N·m (1.2 kgf·m , 9 lbf·ft)
9.
Pour the drained oil into a suitable container and dispose of it in
an approved manner (page 204).
NOTICE
Improper disposal of drained fluids is harmful to the environment.
(5)
(3)
(3) oil level check bolt
(4) sealing washer
REAR
(4)
(5) oil level check hole
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 136 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
137
(cont’d)
Front Final Gear Oil
Refer to Safety Precautions on page 107.
Change the oil with the front final gear at normal operating
temperature to assure complete and rapid draining.
Oil Recommendation
type hypoid gear oil
viscosity (weight) SAE 80W–90
Changing Oil
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 137 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
138
Front Final Gear Oil
1.
Park your ATV on a firm, level surface.
2.
Place an oil drain pan under the oil drain bolt (1).
3.
Remove the oil fill cap (2), O-ring, drain bolt and sealing washer.
4.
After the oil has completely drained, reinstall the drain bolt with
a new sealing washer and tighten it to the specified torque:
12 N·m (1.2 kgf·m , 9 lbf·ft)
5.
Pour the drained oil into a suitable container and dispose of it in
an approved manner (page 204).
NOTICE
Improper disposal of drained fluids is harmful to the environment.
6.
Fill the front final gear with the recommended oil.
210 cm
3
(7.1 US oz , 7.4 Imp oz)
Make sure the oil level is at the lower edge of the oil fill inspection
hole (3).
7.
Coat a new O-ring with grease and install it into the fill cap
groove and tighten it to the specified torque:
12 N·m (1.2 kgf·m , 9 lbf·ft)
(2)
(1) oil drain bolt
(3)
FRONT
(2) oil fill cap
(3) oil fill inspection hole
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 138 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
139
(cont’d)
Coolant
Your ATV’s liquid cooling system dissipates engine heat through the
coolant jacket that surrounds the cylinder and cylinder head.
Maintaining the coolant will allow the cooling system to work
properly and prevent freezing, overheating, and corrosion.
Use only high quality ethylene glycol antifreeze containing corrosion
protection inhibitors specifically recommended for use in aluminum
engines. Check the antifreeze container label.
Use only distilled water as a part of the coolant solution. Water that
is high in mineral content or salt may be harmful to the aluminum
engine.
NOTICE
Using coolant with silicate inhibitors may cause premature wear of
water pump seals or blockage of radiator passages. Using tap water
may cause engine damage.
The factory provides a 50/50 solution of antifreeze and water in this
ATV. This coolant solution is recommended for most operating
temperatures and provides good corrosion protection.
Decreasing the concentration of antifreeze to less than 40 % will not
provide proper corrosion protection.
Coolant Recommendation
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 139 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
140
Coolant
Increasing the concentration of antifreeze is not recommended
because it decreases cooling system performance. Higher
concentrations of antifreeze (up to 60 %) should only be used to
provide additional protection against freezing. Check the cooling
system frequently during freezing weather.
Refer to Safety Precautions on page 107.
Check the engine coolant level each day before operating your ATV
and add if needed.
1.
Make sure the vehicle is on level ground.
2.
With the engine at normal operating temperature, check the
coolant level in the reserve tank (1). It should be between the
UPPER (2) and LOWER (3) level marks.
If the reserve tank is empty, or if coolant loss is excessive, check
for leaks and see your dealer for repair.
Checking & Adding Coolant
LEFT FRONT
(1)
(1) reserve tank
(2) UPPER level mark
(3) LOWER level mark
(2)
(3)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 140 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
141
Coolant
3.
Remove the radiator cap lid (4) and reserve tank cap (5).
Always add coolant to the reserve tank. Do not attempt to add
coolant by removing the radiator cap.
4.
Add coolant to the reserve tank as required to bring the coolant
level to the UPPER level mark.
5.
After adding coolant, install the parts in the reverse order of
removal.
FRONT
(4) radiator cap lid
(5) reserve tank cap
(4)
(5)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 141 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
142
Coolant
Refer to Safety Precautions on page 107.
Coolant should be replaced by your dealer, unless you have the
proper tools and service data, and are mechanically qualified. Refer
to the official Honda Shop Manual.
To properly dispose of drained coolant, refer to You & the
Environment, page 204.
NOTICE
Improper disposal of drained fluids is harmful to the environment.
Coolant Replacement
WARNING
3
WARNING
Removing the radiator cap while the engine is
hot can cause the coolant to spray out,
seriously scalding you.
Always let the engine and radiator cool down
before removing the radiator cap.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 142 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
143
Coolant
(cont’d)
Refer to Safety Precautions on page 107.
Check the air passages for clogging or damage. Remove insects,
mud, or any obstruction with low water pressure. Have the radiator
checked by your dealer if the air flow is restricted over more than
20 % of the radiator surface.
Clean the radiator core after riding the ATV in mud.
To clean the radiator core and radiator grill cover:
1.
Unhook the reserve tank tube (1).
2.
Remove the reserve tank (2) from the left radiator grill cover (3)
by removing the bolt (4) and clip (5).
3.
Remove the clips (6).
4.
Unhook the tab A (7) and tab B (8) on both of the left and right
side.
5.
Unhook the left side of the centre radiator grill cover hook (9) and
slide the left radiator grill cover.
6.
Remove the left radiator grill cover.
NOTICE
Do not apply pressured water directly to the radiator core.
The pressured water can damage the radiator core.
Radiator Core
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 143 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
144
Coolant
(6)
(8)
(1)
(1) reserve tank tube
(2) reserve tank
(4) bolt
(5) clip
(6) clips
LEFT FRONT
(7) tab A
(8) tab B
(9) centre radiator grill cover
hook
(9)
(2)
(3) left radiator grill cover
(3)
(6) (5) (4)
(7)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 144 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
145
Coolant
7.
Remove the centre radiator grill cover (10) by unhooking the right
side of the centre radiator grill cover hook (11).
8.
Wash the radiator core (12) and centre radiator grill cover.
9.
Install the removed parts in reverse order of removal.
(7)
(7) tab A (8) tab B
RIGHT FRONT
(8)
(11)
(10) centre radiator
grill cover
(11) centre radiator grill cover hook
LEFT FRONT
(12)
(12) radiator core
(10)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 145 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
146
Air Cleaner
Refer to Safety Precautions on page 107.
Proper air cleaner maintenance is very important for off-road
vehicles.
A dirty, water-soaked, worn-out, or defective air cleaner will allow
dirt, dust, mud, and other impurities to pass into the engine.
Service the air cleaner more frequently if you ride in unusually wet or
dusty areas. Your dealer can help you determine the correct service
interval for your riding conditions.
Your ATV’s air cleaner has very specific performance requirements.
Use a new Honda Genuine air cleaner specified for your model or an
air cleaner of equal quality.
NOTICE
Using the wrong air cleaner may result in premature engine wear.
Proper air cleaner maintenance can prevent premature engine wear
or damage, expensive repairs, low engine power, poor gas mileage,
and spark plug fouling.
NOTICE
Improper or lack of proper air cleaner maintenance can cause poor
performance and premature engine wear.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 146 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
147
Air Cleaner
(cont’d)
1.
Remove the seat (page 118).
2.
Unlatch the retainer clips (1).
3.
Remove the air cleaner housing cover (2).
Cleaning
UNDER SEAT
(1)
(2)
(1) retainer clips (2) air cleaner housing cover
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 147 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
148
Air Cleaner
4.
Loosen the screw (3) and remove the air cleaner assembly (4)
from the air cleaner housing.
5.
Remove the clamp (5).
6.
Remove the air cleaner (6) from the air cleaner body (7).
7.
Gently wash the air cleaner in clean, non-flammable (high flash
point) solvent such as kerosene — not petrol. After cleaning,
gently squeeze out the remaining solvent. Avoid twisting or
wringing the air cleaner. This can tear the foam.
8.
Inspect for tears or cracks in the foam or seams of the air cleaner.
Replace the air cleaner if it is damaged.
9.
Allow the air cleaner to dry thoroughly before applying oil. A wet
air cleaner will not fully absorb the oil.
10.
Pour clean air filter oil over the entire surface of the air cleaner.
Use both hands to evenly spread the oil into the air cleaner.
Gently squeeze out any excess oil. (To keep your hands dry, place
the air cleaner in a clean plastic bag before spreading the oil into
the air cleaner.)
(3)
(3) screw
UNDER SEAT
(5)
(7)
(6)
(4) air cleaner assembly
(5) clamp
(6) air cleaner
(7) air cleaner body
(4)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 148 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
149
Air Cleaner
11.
Install the air cleaner on the air cleaner body.
12.
Apply a thin coat of grease to the sealing surface of the air
cleaner assembly.
13.
Install the clamp.
14.
Insert the air cleaner assembly into the air cleaner housing.
15.
Fasten the screw.
16.
Reassemble by reversing the disassembly sequence.
• Install the air cleaner housing cover and fit the cut out of the
tab (8) at the end of the air cleaner.
(8)
UNDER SEAT
(8) tab
(8)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 149 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
150
Air Cleaner
Do not push the dust cover (1) too far into the breather joint (2).
If the dust cover is dirty, clean it.
Dust Cover
UNDER SEAT
(1)
(2)
(1) dust cover (2) breather joint
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 150 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
151
Air Cleaner
The air cleaner housing drain tube should be serviced in accordance
with the Maintenance Schedule. (Riding through water may require
more frequent inspection.) If deposits can be seen in the drain tube,
the tube must be cleaned before starting the vehicle.
1.
Remove the drain tube (1) by removing the clip (2) under the air
cleaner housing (3).
2.
Drain the deposits.
3.
Reinstall the drain tube, securing it with the clip.
Air Cleaner Housing Drain Tube
REAR
(1) drain tube (3) air cleaner housing
(2)
(1)
(2) clip
(3)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 151 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
152
Engine
Throttle
Refer to Safety Precautions on page 107.
Inspection
Check freeplay at the throttle lever (1).
Freeplay:
3 – 8 mm (0.1 – 0.3 in)
Adjustment
1.
Slide the rubber sleeve (2) back to expose the throttle cable
adjuster (3).
2.
Loosen the lock nut (4).
3.
Turn the adjuster to obtain the correct freeplay.
4.
Tighten the lock nut and reinstall the sleeve.
5.
After adjustment, check for smooth operation of the throttle
lever from fully closed to fully open in all steering positions.
Throttle Freeplay
RIGHT HANDLEBAR
3 – 8 mm
(0.1 – 0.3 in)
(2)
(1) throttle lever
(2) rubber sleeve
(3) throttle cable adjuster
(4) lock nut
(A) decrease freeplay
(B) increase freeplay
(A)
(B)
(3) (4) (1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 152 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
153
Throttle
Refer to Safety Precautions on page 107.
1.
Check that the throttle assembly is positioned properly and the
securing bolts are tight.
2.
Check for smooth operation of the throttle lever from fully open
to fully closed in all steering positions. If there is a problem, see
your dealer.
3.
Inspect the condition of the throttle cables from the throttle lever
down to the throttle body. If the cable is kinked or chafed, have
it replaced.
4.
Check the throttle cable for tension or stress in all steering
positions.
5.
Lubricate the throttle cable with a commercially available cable
lubricant to prevent premature wear and corrosion.
Throttle Inspection
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 153 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
154
Reverse Lock System
Refer to Safety Precautions on page 107.
1.
Turn over the dust cover (1).
2.
Check the reverse assist lever (2) freeplay, measured at the
reverse assist lever end near the cable:
2 – 4 mm (0.1 – 0.2 in)
3.
To adjust, slide the rubber sleeve (3), loosen the lock nut (4) and
turn the adjusting nut (5) to obtain the correct freeplay.
After adjustment, tighten the lock nut securely.
4.
Return the dust cover and rubber sleeve.
Other Checks
Check the reverse assist lever and cable for loose connections or
other damage. If the cable is worn or kinked, have it replaced by
your dealer.
Reverse Lock System Adjustment
LEFT HANDLEBAR
(1)
(1) dust cover
(2)
(5)
(3) (4)
(2) reverse assist lever
(3) rubber sleeve
(4) lock nut
(5) adjusting nut
2 – 4 mm
(0.1 – 0.2 in)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 154 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
155
(cont’d)
Spark Plug
Use only the recommended type of spark plug in the recommended
heat range.
NOTICE
Using spark plugs with an improper heat range can cause engine
damage.
Refer to Safety Precautions on page 107.
1.
Remove the seat (page 118) and tank cover assembly (page 119).
2.
Clean any dirt from around the spark plug base.
3.
Disconnect the spark plug cap (1). Take care to avoid damaging
the spark plug wire when disconnecting the cap.
4.
Using a spark plug wrench provided in the tool kit, remove the
spark plug.
5.
Inspect the electrodes and centre porcelain for deposits,
corrosion, or carbon fouling. If the corrosion or deposits are
heavy, replace the plug. Clean a carbon or wet-fouled plug with
a plug cleaner, if available, or a wire brush. Inspect the spark plug
electrodes for wear. The centre electrode (2) should have a flat tip
and sharp edges, and the side electrode (3) should not be eroded.
If the electrodes and insulator tip appear unusually fouled or
burned, we suggest that you contact your dealer.
Spark Plug Recommendation
standard spark plug BKR5E-11 (NGK) or
K16PR-U11 (DENSO)
Spark Plug Inspection & Replacement
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 155 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
156
Spark Plug
6.
Discard the spark plug if there is apparent wear or if the insulator
is cracked or chipped.
7.
Using a wire-type feeler gauge, check the spark plug gap (4). If
adjustment is necessary, bend the side electrode carefully.
The gap should be:
1.00 – 1.10 mm (0.039 – 0.043 in)
8.
With the plug washer attached, thread the spark plug in by hand
to prevent cross-threading.
9.
Tighten the spark plug:
• If the old plug is good:
1/8 turn after it seats.
• If installing a new plug, tighten it twice to prevent loosening:
a) First, tighten the plug:
b) Then loosen the plug.
c) Next, tighten the plug again:
1/8 turn after it seats.
NGK: 3/4 turn after it seats.
DENSO: 1/2 turn after it seats.
(1) spark plug cap
(2) centre electrode
(3) side electrode
(4) spark plug gap
1.00 – 1.10 mm
(0.039 – 0.043 in)
LEFT SIDE
(1)
(2)
(3)
(4)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 156 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
157
Spark Plug
NOTICE
An improperly tightened spark plug can damage the engine. If a
plug is too loose, a piston may be damaged. If a plug is too tight, the
threads may be damaged.
10.
Connect the spark plug cap. Take care to avoid pinching any
cables or wires.
11.
Install the remaining parts in the reverse order of removal.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 157 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
158
Valves
Refer to Safety Precautions on page 107.
Valve clearance should be:
Excessive clearance will cause noise. Insufficient clearance will cause
loss of power and possibly damage the valves.
For those who are mechanically proficient and have the proper tools,
instructions on adjusting valve clearances are given in the official
Honda Shop Manual. Otherwise, the valves should be adjusted by
your dealer.
Valve Inspection
intake: 0.15 mm (0.006 in)
exhaust: 0.23 mm (0.009 in)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 158 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
159
Spark Arrester
Refer to Safety Precautions on page 107.
The exhaust system must be periodically purged of accumulated
carbon.
To purge the system:
1.
Select a well-ventilated area free of combustible materials and
make sure the exhaust pipe is cool.
2.
Remove the bolt (1).
3.
Start the engine and rev it up approximately twenty times while
momentarily creating exhaust system back pressure by blocking
the end of the muffler with a shop towel.
4.
Stop the engine and allow the exhaust pipe to cool.
5.
Reinstall the bolt securely.
(1)
(1) bolt
REAR
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 159 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
160
Cha ssis
Suspension
Your front and rear suspension systems use springs and hydraulic
damping devices that suspend your weight and most of the weight
of your ATV.
The spring pre-loads for your front and rear suspension systems
adjust the amount of force required to begin compression of the
spring.
The oil damper systems hydraulically control the natural compression
and rebound of the suspension springs so that traction and comfort
are maintained as the wheels ride over rough terrain.
Consider adjusting your suspensions pre-load whenever you change
your normal load, by adding or subtracting cargo, accessories, or
when riding conditions change.
The way you ride your ATV and the type of ride you want to
experience can also influence your suspension needs.
Lower spring pre-load provides a softer ride and is usually preferred
for light loads and smooth terrain. Higher spring pre-load provides a
firmer ride and is recommended for heavy loads and rough terrain.
Using a pin spanner, which is available from your dealer, the
suspensions can be adjusted for rider weight and riding conditions
by changing the spring pre-load.
Do not attempt to disassemble, service, or dispose of the damper;
see your dealer. The instructions found in this owner’s manual are
limited to adjustments of the shock assembly only.
Suspension Adjustment
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 160 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
161
Suspension
(cont’d)
Refer to Safety Precautions on page 107.
The spring pre-load adjuster (1) has 5 positions for different load or
riding conditions.
Use the pin spanner (2) to adjust the shock spring pre-load.
Suspension Spring Pre-Load
(1)
FRONT REAR
(2)
(1)
(2)12345 12345
(1) spring pre-load adjuster
(2) pin spanner
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 161 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
162
Suspension
Position 1: for a light load and smooth terrain.
Position 2: standard position.
Positions 3 to 5: for when the ATV is more heavily loaded. (Also
increase spring pre-load for stiffer suspension.)
Make sure that both front shock absorbers are adjusted to the same
position.
Always adjust the shock absorber position in sequence (1-2-3-4-5 or
5-4-3-2-1). Attempting to adjust directly from 1 to 5 or 5 to 1 may
damage the shock absorber.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 162 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
163
Brakes
The hydraulic disc brakes (front) and single mechanical drum brake
(rear) on your ATV dissipate heat generated by the friction of the
brake pads on the discs (front) and the brake shoes on the drum
(rear) as the wheels are slowed.
Hydraulic Disc Front Brake
As the front brake pads wear, brake fluid level will drop. A leak in the
system will also cause the level to drop.
There are no adjustments to perform, but fluid level and pad wear
must be inspected periodically. The system must be inspected
frequently to ensure there are no fluid leaks.
If the right brake lever freeplay does not feel within the normal range
while riding, check the brake pads for wear (page 166).
Worn pads should be replaced. If the pads are not worn beyond the
recommended limit, there is probably air in the brake system. See
your dealer to have the air bled from the system.
Mechanical Drum Rear Brake
If the rear brake lever/parking brake lever or brake pedal freeplay
does not feel within the normal range while riding, check the brake
shoes for wear (page 171).
The recommended brake fluid is DOT 4 Brake Fluid, or any brake
fluid of equal quality and performance. Use fresh brake fluid from a
sealed container. Be sure to read the label before opening the sealed
container. An opened container may be contaminated or may have
absorbed moisture from the air.
Brake Fluid Recommendation
brake fluid DOT 4 Brake Fluid
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 163 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
164
Brakes
Refer to Safety Precautions on page 107.
If your inspection indicates a low fluid level, have your dealer add the
recommended fluid.
Do not add or replace brake fluid, except in an emergency. If you do
add fluid, have your dealer check the system as soon as possible.
NOTICE
Brake fluid can damage plastic and painted surfaces. Handle with
care.
Wipe up spills immediately. Avoid brake fluid contact with skin or
eyes. If it comes in contact with your eyes, wash them out with clean
water and immediately call a doctor. If it comes in contact with your
skin, wash with clean water and, if necessary, call a doctor.
Fluid Level Inspection
(1)
RIGHT HANDLEBAR
(1) LOWER level mark
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 164 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
165
Brakes
With the ATV on a level surface, check the fluid level.
It should be above the LOWER level mark (1). If the level is at or
below the LOWER level mark, check the brake pads for wear
(page 166).
Worn brake pads should be replaced. If the pads are not worn, have
your brake system inspected for leaks.
• Make sure there are no fluid leaks.
• Check for deterioration or cracks in the hoses and fittings. If the
hoses are worn or cracked, have them replaced by your dealer.
Other Inspections
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 165 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
166
Brakes
Refer to Safety Precautions on page 107.
Brake pad wear will depend upon the severity of usage and riding
conditions. The pads will wear faster in wet or muddy conditions.
Inspect the pads visually during all regular service intervals to
determine the pad wear.
Check the wear indicator (1). If the wear indicator aligns with the
edge of the reference mark (2), both pads must be replaced, see
your dealer for this replacement.
Always inspect both pads in both the right and left front brake
calipers.
Brake Pad Wear
RIGHT FRONT (Left side similar)
(2) (1)
(1) wear indicator (2) edge of reference mark
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 166 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
167
Brakes
(cont’d)
Inspection
Measure the distance the rear brake pedal (1) moves before the
brake starts to take hold. Freeplay, measurement at the tip of the
end of the pedal, should be:
15 – 20 mm (0.6 – 0.8 in)
If necessary, adjust to the specified range.
Rear Brake Pedal Freeplay
(1)
RIGHT SIDE
(1) rear brake pedal
15 – 20 mm
(0.6 – 0.8 in)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 167 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
168
Brakes
Adjustment
1.
Turn the brake pedal adjusting nut (2), located on the brake
operating rod at the rear of the frame. Make sure the cutout on
the adjusting nut is properly seated on the brake arm pin (3).
2.
Adjust the freeplay of the rear brake pedal. Push the brake arm
(4), then check the clearance between the brake arm and the
brake arm pin.
RIGHT REAR
(2) brake pedal adjusting nut
(3) brake arm pin
(3)
(2)
(4) brake arm
(4)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 168 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
169
Brakes
(cont’d)
Inspection
Measure the distance the rear brake lever/parking brake lever (1)
moves before the brake starts to take hold. Freeplay (measurement
at the tip of the end of the brake lever) should be:
15 – 20 mm (0.6 – 0.8 in)
If necessary, adjust to the specified range.
Rear Brake Lever Freeplay
LEFT HANDLEBAR
(1) rear brake lever/parking brake lever
15 – 20 mm
(0.6 – 0.8 in)
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 169 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
170
Brakes
Adjustment
Adjust the freeplay of the rear brake lever/parking brake lever with
the front wheels pointed straight ahead.
1.
Turn the brake lever adjusting nut (2), located on the brake
operating rod at the rear of the frame. Make sure the cutout on
the adjusting nut is properly seated on the brake arm pin (3).
2.
Adjust the freeplay of the rear brake lever/parking brake lever.
Push the brake arm (4) then check the clearance between the
brake arm and the brake arm pin.
RIGHT REAR
(2) brake lever adjusting nut
(3) brake arm pin
(3)
(2)
(4) brake arm
(4)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 170 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
171
Brakes
• Check that the rear brake lever and brake pedal assemblies are
positioned properly and the securing bolts are tight.
• Make sure that the brake cables, brake arm, spring, P/R lever and
fasteners are in good condition.
Refer to Safety Precautions on page 107.
The rear brake is equipped with an external brake wear indicator
that lets you check brake wear without disassembly. Application of
the brake control causes the arrow on the brake arm to move
toward a reference mark on the brake panel.
1.
Apply the brake control and check the movement of the arrow
(1) on the brake arm (2).
2.
Replace the brake shoe if the arrow aligns with the reference
mark (3) on the brake panel upon full application of the brake. If
replacement is necessary, see your dealer.
Other Inspections
Brake Shoe Wear
RIGHT REAR
(1) arrow
(2) brake arm
(2)
(1)
(3)
(3) reference mark
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 171 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
172
Brakes
Refer to Safety Precautions on page 107.
Rear Brake Only:
Check the operation of the rear brake light switch (1) at the right
side behind the engine from time to time. Adjustment is done by
turning the adjusting nut (2). Turn the nut in direction (A) if the
switch operates too late and in direction (B) if the switch operates
too soon.
Brake Light Switch Adjustment
RIGHT REAR
(1) rear brake light switch
(1)
(2)
(A)
(B)
(2) adjusting nut
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 172 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
173
Brakes
Refer to Safety Precautions on page 107.
1.
Make sure the engine is OFF and the parking brake is set.
2.
Remove the rear brake drain bolt (1) and sealing washer from the
bottom of the rear brake cover.
If any water drains, the brake seals must be replaced by your
dealer as soon as possible.
3.
Install the rear brake drain bolt with a new sealing washer and
tighten it to the specified torque:
12 N·m (1.2 kgf·m , 9 lbf·ft)
Draining Water from Brakes
RIGHT REAR
(1) rear brake drain bolt
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 173 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
174
Tyres
To safely operate your ATV, your tyres must be the proper type and
size, in good condition with adequate tread, and correctly inflated.
This ATV is equipped with low pressure tubeless tyres. Although the
tyres are designed specifically for off-road use, they are not immune
to punctures. Always select your riding area with care.
The following pages give detailed information on how and when to
check your air pressure, how to inspect your tyres for wear and
damage, and our recommendations for tyre repair and replacement.
WARNING
3
WARNING
Using tyres that are excessively worn or
improperly inflated can cause a crash in which
you can be seriously hurt or killed.
Follow all instructions in this owner’s manual
regarding tyre inflation and maintenance.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 174 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
175
Tyres
(cont’d)
Refer to Safety Precautions on page 107.
Properly inflated tyres provide the best combination of handling,
tread life, and riding comfort. Generally, underinflated tyres wear
unevenly, adversely affect handling, and are more likely to fail from
being overheated. Overinflated tyres make your ATV ride harshly, are
more prone to damage from surface hazards, and wear unevenly.
Make sure the air valve caps are secure. If necessary, install new
caps.
Always check air pressure when your tyres are “cold.” If you check
air pressure when your tyres are “warm” – even if your ATV has only
been ridden for a few miles – the readings will be higher. If you let
air out of warm tyres to match the recommended cold tyre
pressures, the tyres will be underinflated. Be sure to check tyre
pressure at the riding site, since changes in altitude can affect air
pressure.
The recommended “cold” tyre pressures are:
Air Pressure
FRONT REAR
RECOMMENDED
PRESSURE
30 kPa (4.4 psi) 30 kPa (4.4 psi)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 175 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
176
Tyres
A manually operated tyre pump should be used rather than the high
pressure system found in service stations. This will minimize the
possibility of tyre damage from overinflation. If you use a high
pressure system at a service station, add air in small amounts and
check the pressure increase frequently to prevent possible tyre
damage from overinflation.
Refer to Safety Precautions on page 107.
Whenever you check the tyre pressures, you should also look for:
• Bumps or bulges in the side of the tyre or the tread. Replace any
tyre that has a bump or bulge.
• Cuts, slits, or cracks in the tyres. Replace the tyre if you can see
fabric or cord.
• Nails or other foreign objects embedded in the side of the tyre or
tread.
• Excessive tread wear.
WARNING
3
WARNING
Operating this ATV with improper tyres, or
with uneven tyre pressure may cause loss of
control, and you could be seriously injured or
killed.
• Always use the size and type tyres specified
in this owner’s manual for this vehicle.
• Always maintain proper tyre pressure as
described in this owner’s manual.
Inspection
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 176 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
177
Tyres
Also, if you hit a pothole or other hard object while riding, stop as
soon as you safely can and carefully inspect the tyres for damage.
Tread Wear
To check the condition of a tyre tread, measure the groove depth (1)
in the centre of the tyre, or check the wear indicator (2).
For best performance, you should replace a tyre before the tread
depth at the centre reaches the following limits:
front 4 mm (0.16 in)
rear 4 mm (0.16 in)
FRONT
(3)
(2)
(1)
4 mm
(0.16 in)
REAR
(1) groove depth
(2) wear indicator
(3) wear indicator
location mark
Replace
NEW
Replace
NEW
4 mm
(0.16 in)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 177 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
178
Tyres
Refer to Safety Precautions on page 107.
A tyre that is repaired, either temporarily or permanently, will have
lower speed and performance limits than a new or undamaged tyre.
A temporary repair can sometimes be made in an emergency
situation. However, since a temporary repair may not hold, you must
ride very slowly, preferably without any cargo, and have the tyre
replaced or permanently repaired as soon as possible. (For more
information on temporary repairs, see If You Have a Flat Tyre,
page 216.)
A permanent repair, such as an internal plug patch, can be made if
a tyre has only a small puncture in the tread area. However you may
not be able to safely carry as much weight. If you choose to have a
tyre repaired, be sure the repair work is performed by a professional.
If you have a tyre professionally repaired at a non-Honda facility, we
recommend that you have the work checked by your dealer.
Tyre Repair
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 178 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
179
Tyres
Refer to Safety Precautions on page 107.
The tyres that came on your ATV were designed to match the
performance capabilities of your ATV and provide the best
combination of handling, braking, and comfort.
It is best to replace all four tyres, however if that is not possible, you
must replace the tyres in pairs (front or rear) with tyres of the same
size and type as the originals. Never replace just one tyre.
The recommended tyres for your ATV are:
When you replace a tyre, remember:
Have the tyre replaced by your dealer if possible.
If you have a tyre professionally replaced at a non-Honda facility, we
recommended that you have the work checked by your dealer.
Tyre Replacement
WARNING
3
WARNING
Installing improper tyres on your ATV can
affect handling and stability. This can cause a
crash in which you can be seriously hurt or
killed.
Always use the size and type of tyres
recommended in this owner’s manual.
front AT24 × 8-1211 MAXXIS M977
rear AT24 × 10-1111 MAXXIS M978
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 179 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
180
Guards
Refer to Safety Precautions on page 107.
The engine guard (1) protects the frame and engine crankcase.
The skid plate (2) protects the rear final gear case. Check the guard
and plate for cracks, damage or looseness at intervals shown in the
Maintenance Schedule.
Have the engine guard and skid plates replaced if they are cracked or
damaged. If the guard and plate bolts are loose, tighten them
securely.
Skid Plate & Engine Guard
(1) engine guard (2) skid plates
(1) (2)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 180 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
181
Guards
Refer to Safety Precautions on page 107.
Check the front boot guards (1) and front driveshaft guards (2) for
cracks, damage or looseness.
Tighten any loose fasteners. Replace the front boot guards and front
driveshaft guards as required.
Front Boot Guards & Front Driveshaft Guards
(1) front boot guards (2) front driveshaft guards
(2)
(1)
FRONT
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 181 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
182
Drivetrain Boots
Refer to Safety Precautions on page 107.
Check the propeller shaft boots (1) and yoke joint boot (2) for
damage or leaking grease. If necessary, have your dealer replace
them.
Propeller Shaft Boots & Yoke Joint Boot
(1) propeller shaft boots
(2) yoke joint boot
(1) (2)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 182 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
183
Drivetrain Boots
Refer to Safety Precautions on page 107.
Check the driveshaft boots (1) for cuts, damage or leaking grease. If
necessary, have your dealer replace them.
Front Driveshaft Boots
FRONT
(1)
(1) driveshaft boots
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 183 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
184
Electr ical
Battery
Your ATV has a maintenance-free type battery. You do not have to
check the battery electrolyte level or add distilled water as you would
with a conventional-type battery.
NOTICE
Your battery is a maintenance-free type and can be permanently
damaged if the cap strip is removed.
Electrical accessories use current from the battery, even when the
ignition is OFF (w). Limited operation also allows the battery to
discharge. If you have electrical accessories on your ATV or do not
ride frequently, we recommend that you charge the battery
frequently (see Battery Charging, page 188).
If you do not expect to ride your ATV for at least two weeks, we
recommend you remove the battery, or at least disconnect the
battery cables (negative cable first).
If you plan to store your ATV, see Battery Storage, page 185.
If your battery seems weak and/or is leaking electrolyte (causing slow
starting or other electrical problems), see your dealer.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 184 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
185
Battery
(cont’d)
Refer to Safety Precautions on page 107.
If you plan to store your ATV, we recommend you remove the
battery and store it where it can be charged at least every 30 days to
maintain its service life.
If you do not remove the battery, we recommend disconnecting the
battery cables (negative cable first).
You will get the best storage results from removing the battery and
slow charging it every 30 days (see Battery Charging, page 188).
Before you remove the battery, be sure to read all the information
that follows, as well as the information on the battery label.
Battery Storage
WARNING
3
WARNING
The battery gives off explosive hydrogen gas
during normal operation.
A spark or flame can cause the battery to
explode with enough force to kill or seriously
hurt you.
Wear protective clothing and a face shield, or
have a skilled mechanic do the battery
maintenance.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 185 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
186
Battery
The battery is located in a compartment under the rear fender cover.
Removal
1.
Make sure the ignition switch is OFF (w).
2.
Remove the seat (page 118).
3.
Remove the rear fender cover (page 121).
4.
Release the rings and remove the rubber band (1).
5.
Disconnect the negative (–) terminal lead (2) from the battery (3)
first, then disconnect the positive (+) terminal lead (4).
(4)
(1) rubber band
(2) negative (–) terminal lead
(3) battery
(4) positive (+) terminal lead
UNDER REAR FENDER COVER
(3)
(2)
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 186 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
187
Battery
6.
Remove the battery and taking care not to drop the terminal
nuts.
7.
Charge the battery (see following section).
8.
Store your battery in an easy-to-reach location off the floor, in an
area protected from freezing temperature and direct sunlight.
9.
Clean the compartment after removing the battery for storage.
Dry the compartment.
10.
Slow charge the battery (see following section) once every 30
days.
Installation
1.
Check that the battery rubber (5) for damage. If necessary,
replace the battery rubber.
2.
Make sure the battery rubber is properly installed.
3.
Reinstall in the reverse order of removal.
Be sure to connect the positive (+) terminal first, then the
negative (–) terminal.
4.
Make sure all bolts and other fasteners are secure.
5.
Install the removed parts in reverse order of removal.
Make sure the clock is set to the proper time (page 27) after the
battery is reconnected.
(5) battery rubber
(5)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 187 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
188
Battery
Refer to Safety Precautions on page 107.
Be sure to read the information that came with your battery charger
and follow the instructions on the battery. Improper charging may
damage the battery.
We recommend using a charger (1) designed specifically for your
Honda, which can be purchased from your dealer. These units can
be left connected for long periods without risking damage to the
battery. However, do not intentionally leave the charger connected
longer than the time period recommended in the charger’s
instructions.
Avoid using an automotive-type battery charger. An automotive
charger can overheat an ATV battery and cause premature damage.
Battery Charging
(1) charger
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 188 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
189
Appearance Care
Frequent cleaning and polishing will keep your Honda looking newer
longer.
Frequent cleaning also identifies you as an owner who values his
ATV. A clean ATV is also easier to inspect and service.
Refer to Safety Precautions on page 107.
• To clean your ATV, you may use:
– water
– a mild, neutral detergent and water
– a mild spray and wipe cleaner/polisher
– a mild spray and rinse cleaner/degreaser and water
• Avoid products that contain harsh detergents or chemical
solvents that could damage the metal, paint, and plastic on your
ATV.
• If your ATV is still warm from recent operation, give the engine
and exhaust system time to cool off.
• Park in a shady area. Washing your ATV in bright sunlight may
cause the finish to fade because water droplets intensify the sun’s
brightness.
• Spotting is also more likely because surface water can dry before
you have time to wipe it off.
• Clean your ATV regularly to protect surface finishes.
• We recommend the use of a low pressure garden hose to wash
your ATV. High pressure washers (like those at coin-operated car
washers) can damage certain parts of your ATV.
NOTICE
High pressure water (or air) can damage certain parts of your ATV.
Water entering the muffler may damage the oxygen sensor.
• After cleaning, inspect for damage, wear, and leaks (fuel, oil,
coolant and brake fluid).
General Recommendations
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 189 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
190
Appearance Care
Refer to Safety Precautions on page 107.
1.
Cover or plug the exhaust outlet prior to washing your ATV.
2.
Rinse your ATV thoroughly with cool water to remove loose dirt.
3.
Fill a bucket with cool water. Mix in a mild, neutral detergent,
such as dish washing liquid or a product made especially for
washing motorcycles or automobiles.
4.
Wash your ATV with a sponge or soft towel. As you wash, check
for heavy grime. If necessary, use a mild cleaner/degreaser to
remove the grime.
5.
After washing, rinse your ATV thoroughly with plenty of clean
water to remove any residue. Detergent residue can corrode alloy
parts.
6.
Dry your ATV with a chamois or a soft towel. Leaving water on
the surface to air dry can cause dulling and water spots. As you
dry, inspect for chips and scratches.
7.
Remove the cover or the plug from exhaust outlet. Then, start the
engine and let it idle for several minutes. The engine heat will
help dry moist areas.
8.
As a precaution, ride your ATV at a slow speed and apply the
brakes several times. This will help dry the brakes and restore
normal braking performance.
The headlights' inside lens may fog temporarily after washing or
while riding in the rain. This does not impact the headlight
function.
Any condensation inside the headlight should dissipate after a
few minutes of running the engine with the headlight(s) on.
However, if you see a large amount of water or ice accumulated
inside the lens(es), have your vehicle inspected by your dealer.
Washing Your ATV with a Mild Detergent
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 190 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
191
Appearance Care
Refer to Safety Precautions on page 107.
Avoid using spray cleaner products on the tyres or suspension
components.
Suggestions for using spray cleaner(s) follow:
Spray Cleaning Your ATV
ATV condition Recommended Cleaning
Dust and fingerprint
smudges.
Apply a spray cleaner/polish
and wipe paint, chrome, glass,
and clear plastic.
Light road grimes. Spray any difficult-to-reach or
very dirty areas with a spray
cleaner/degreaser.
Rinse and dry.
Apply a spray cleaner/polish
and wipe with a non-abrasive
cloth.
Heavy grime. Oil leaks.
Brake dust.
Use a spray cleaner/degreaser.
If necessary, rub with a
sponge.
Rinse and dry.
Apply a spray cleaner/polish
and wipe with a non-abrasive
cloth.
Dull, corroded chrome
or aluminum.
Apply a high quality chrome/
aluminum polish and wipe
with a non-abrasive cloth.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 191 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
192
Appearance Care
Refer to Safety Precautions on page 107.
The exhaust pipe and muffler are stainless steel but may become
stained by mud or dust.
To remove mud or dust, use a wet sponge and a liquid kitchen
abrasive, then rinse well with clean water. Dry with chamois or a soft
towel.
If necessary, remove heat stains by using a commercially available
fine texture compound. Then rinse by the same manner as removing
mud or dust.
Exhaust Pipe and Muffler Maintenance
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 192 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
193
Appearance Care
Refer to Safety Precautions on page 107.
After washing your ATV, consider using a commercially available
spray cleaner/polish or quality liquid or paste wax to finish the job.
Use only a non-abrasive polish or wax made specifically for
motorcycles or automobiles. Apply the polish or wax according to
the instructions on the container.
Finishing Touches
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 193 Thursday, May 3, 2018 1:26 PM
Servicing Your Honda
194
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 194 Thursday, May 3, 2018 1:26 PM
Tips
195
Tips
Tips
Here’s helpful advice on how to prepare for an off-road adventure,
how to transport and store your Honda, and how to be an
environmentally responsible ATV owner.
Preparing for a Ride.................................................................. 196
What to Take to the Riding Area............................................ 196
What to Take on the Trail ...................................................... 197
Transporting Your Honda ......................................................... 198
Storing Your Honda.................................................................. 200
Preparation for Storage.......................................................... 201
Removal from Storage ........................................................... 203
You & the Environment ............................................................ 204
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 195 Thursday, May 3, 2018 1:26 PM
Tips
196
Preparing for a Ride
A safe and enjoyable ride begins with good planning and
preparation. Always ride with at least one other person in case you
have trouble, and let someone know where you’re going and when
you expect to return.
Before riding in an unfamiliar area, find out in advance if you need
special permits, get maps so you can study the terrain, and talk to
other riders who know the area.
Along with your ATV and riding gear, you should take along some
tools and supplies in case you have a problem. For some of the
difficulties you might encounter, see Taking Care of the Unexpected,
which begins on page 205.
We recommend that you always take water, food, a first aid kit, and
your owner’s manual. Other items you should consider loading on
your truck or trailer include:
• a tool kit
• tyre repair supplies and tools, and tyres
• extra parts, control levers, cables, and spark plugs
• wire, duct tape, and rope
• extra petrol
For safety, all refueling should be done at a gas station on the way
to the riding area or at your base camp.
What to Take to the Riding Area
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 196 Thursday, May 3, 2018 1:26 PM
Tips
197
Preparing for a Ride
What you take with you during a ride depends on the kind of terrain,
how long you expect to ride, how far you might go from your base
camp or help, and how experienced you or your companions are in
making repairs.
If you decide to take some tools, spare parts, or other supplies on the
trail, be sure you can carry them safely and know how to use them.
Also, be sure to follow the loading guidelines and weight limit
(page 60).
What to Take on the Trail
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 197 Thursday, May 3, 2018 1:26 PM
Tips
198
Transporting Your Honda
Do not tow your ATV behind a car or other vehicle.
When you transport your ATV, we recommend that you carry the
vehicle in its normal operating position (on all four wheels). Do not
incline the vehicle upright on its rear end. This can damage the
vehicle, and leaking petrol could be a hazard.
Follow these procedures:
1.
Set the parking brake.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 198 Thursday, May 3, 2018 1:26 PM
Tips
199
Transporting Your Honda
2.
Secure the vehicle with tie-down straps in the areas shown.
• Suitable tie-down straps are available from your dealer.
• Ordinary rope is not recommended because it can stretch
under load.
• Using tie-down straps in any other areas can damage your ATV.
3.
Rock the vehicle back and forth to make sure the tie-down straps
are tight and the vehicle is secure.
(1)
(3)
(2)
(1) front cargo rack
(2) rear cargo rack
(3) trailer hitch
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 199 Thursday, May 3, 2018 1:26 PM
Tips
200
Storing Your Honda
If you won’t be riding for an extended period, such as during the
winter, thoroughly inspect your ATV and correct any problem before
storing it. That way, needed repairs won’t be forgotten and it will be
easier to get your ATV running again.
We suggest you perform the following procedures to keep your ATV
in top condition. These storage procedures will reduce the
deterioration that can occur during storage.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 200 Thursday, May 3, 2018 1:26 PM
Tips
201
Storing Your Honda
(cont’d)
Refer to Safety Precautions on page 107.
1.
Change the engine oil and filter (page 131).
2.
Make sure the cooling system is filled with a 50/50 % antifreeze
solution (page 139).
3.
Fill the fuel tank. Make sure the fuel fill cap is properly installed.
Preparation for Storage
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 201 Thursday, May 3, 2018 1:26 PM
Tips
202
Storing Your Honda
4.
To prevent rusting in the cylinder, perform the following:
• Remove the spark plug cap from the spark plug (page 155).
• Remove the spark plug.
Do not connect the spark plug to the spark plug cap.
• Pour a tablespoon (15 – 20 cm
3
) of clean engine oil into the
cylinder and cover the spark plug hole with a piece of cloth.
• With the engine stop switch in the RUN (e) position, press the
start button several times to crank the engine and distribute
the oil.
• Reinstall the spark plug and spark plug cap.
5.
Remove the battery and charge it fully. Store it in an area
protected from freezing temperatures and direct sunlight. Slow
charge the battery (page 188) once a month.
6.
Wash and dry your ATV. Wax all painted surfaces.
7.
Inflate the tyres to their recommended pressures (page 175).
8.
Store your ATV in an unheated area, free of dampness, away
from sunlight, with a minimum of daily temperature variation.
9.
Place your ATV on blocks to lift all tyres off the floor.
10.
Cover your ATV with a porous material. Avoid using plastic or
similar non-breathing, coated materials that restrict air flow and
allow heat and moisture to accumulate.
WARNING
3
WARNING
The battery gives off explosive hydrogen gas
during normal operation.
A spark or flame can cause the battery to
explode with enough force to kill or seriously
hurt you.
Wear protective clothing and a face shield, or
have a skilled mechanic do the battery
maintenance.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 202 Thursday, May 3, 2018 1:26 PM
Tips
203
Storing Your Honda
Refer to Safety Precautions on page 107.
1.
Uncover and clean your ATV.
2.
If your ATV has been stored for more than four months – change
the engine oil (page 131).
3.
If your ATV has been stored for more than two months – ask your
dealer to drain and replace the fuel.
4.
Charge the battery (page 188) as required. Install the battery.
5.
Perform a pre-ride inspection (page 55), then test-ride your ATV
at low speeds.
Removal from Storage
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 203 Thursday, May 3, 2018 1:26 PM
Tips
204
You & the Environment
Owning and riding an ATV can be enjoyable, but you must do your
part to protect nature. When you show respect for the land, wildlife,
and other people, you also help preserve the sport of off-road riding.
Following are tips on how you can be an environmentally responsible
ATV owner.
• Tread Lightly. Stay on existing roads and trails, avoid surfaces
that are easily damaged, and ride only in areas approved for off-
road vehicles.
• Keep the Noise Down. Loud vehicles can be offensive. Ride as
quietly as possible, don’t remove your spark arrester, and don’t
modify the muffler or any other part of your air intake and
exhaust systems. Such modifications not only increase noise, they
also reduce engine performance and may be illegal.
• Choose Sensible Cleaners. Use a biodegradable detergent
when you wash your ATV. Avoid aerosol spray cleaners that
contain chlorofluorocarbons (CFCs) which damage the
atmosphere’s protective ozone layer. Don’t throw cleaning
solvents away; see the following guidelines for proper disposal.
• Recycle Wastes. It’s illegal and thoughtless to put used engine
oil in the trash, down a drain, or on the ground. Used oil, petrol,
and cleaning solvents contain poisons that can hurt refuse
workers and contaminate our drinking water, lakes, rivers, and
oceans. Before changing your oil, make sure you have the proper
containers. Put oil and other toxic wastes in separate sealed
containers and take them to a recycling centre. Call your local or
state office of public works or environmental services to find a
recycling centre in your area, and to get instructions on how to
dispose of non-recyclable wastes.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 204 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
205
Taking Care of the Unexpected
Taking Care of the Unexpected
With all the challenges you can encounter off-road, there’s a chance
that sometime something may go wrong. This section gives practical
advice to help you deal with a wide range of problems. Take time to
read this section before you ride. Also review the tips in Preparing for
a Ride (page 196).
General Guidelines ................................................................... 206
If Your Engine Quits or Won’t Start .......................................... 208
If the Transmission Is Not Functioning Properly ......................... 211
Emergency Gear Selection & Operation .................................... 214
If You Have a Flat Tyre.............................................................. 216
If the High Coolant Temperature Indicator Lights...................... 219
If a Fuse Blows.......................................................................... 221
If You Crash ............................................................................. 226
If You Lose Your Key ................................................................ 227
If the Battery Is Low (or Dead)................................................... 228
If a Component Fails................................................................. 229
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 205 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
206
Taking Care of the Unexpected
Keeping your ATV well-maintained is the best way to reduce the
possibility of having a problem while riding. However, problems can
arise even with well-maintained machines.
Remember to take along your owner’s manual, the tool kit that
came with your ATV, and any other items (such as tyre repair
supplies and additional tools) that might help you solve a problem on
your own.
If something goes wrong during a ride, the first thing to do is stop as
soon as you safely can. Do not continue riding if you have a flat tyre,
or you hear an unusual noise, or your ATV just doesn’t feel right. If
you continue riding, you could cause more damage and endanger
your own safety.
After stopping, take time to assess the situation. Carefully inspect
your ATV to identify the problem, then consider your options before
you decide what to do.
If a problem is relatively minor and you have the tools, supplies, and
skills to make a permanent repair, you may be able to fix it on the
trail and continue riding. Or, you may be able to make a temporary
repair that allows you to slowly ride back to your base where you can
make a permanent repair or get help.
When a problem is more serious – or you don’t have the tools,
supplies, experience, or time to deal with it – you need to choose the
safest way to get yourself and your ATV back to base. For example,
if you are close enough, you (or you and another person) might be
able to push it back.
General Guidelines
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 206 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
207
Taking Care of the Unexpected
Should you ever have a problem while riding, please follow these
guidelines:
• Always put personal safety first.
• Take time to assess the situation and your options before
deciding what to do.
• If the problem is relatively minor and you have the tools, supplies,
and skills to make a temporary repair, be sure to have permanent
repairs made as soon as possible.
• Do not continue riding if you are hurt or your ATV is not in safe
riding condition.
Additional recommendations for specific problems follow.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 207 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
208
If Your Engine Quits or Won’t
Start
Proper operation and maintenance can prevent starting and engine
performance problems. In many cases, the cause of the problem may
be a simple operational oversight.
If you have a problem starting the engine – or experience poor
engine performance – the following information may help you. If
you can’t correct the problem, see your dealer.
If your ATV won’t start, listen as you press the start button. If you
don’t hear the starter motor turning, refer to the Starter motor
doesn’t operate symptom. If you can hear the starter motor working
normally, refer to the Starter motor works, but the engine won’t
start symptom.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 208 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
209
If Your Engine Quits or Won’t
Start
(cont’d)
SYMPTOM: Starter motor doesn’t operate.
POSSIBLE CAUSE WHAT TO DO
ignition switch OFF Turn the ignition switch ON.
engine stop switch OFF Slide the engine stop switch to
RUN.
transmission not in
neutral
Shift into neutral or squeeze
the front brake lever.
blown fuse Replace with a new fuse of the
same rating (page 221).
battery lead loose Tighten the battery lead.
low (or dead) battery Charge the battery (page 188).
If charging doesn’t help, see
your dealer.
faulty starter motor If all possible causes are
negative, the starter motor
may be faulty. See your dealer.
SYMPTOM: Starter motor works, but the engine won’t
start.
POSSIBLE CAUSE WHAT TO DO
out of fuel Fill the fuel tank.
flooded engine See Flooded Engine (page 73).
loose or unconnected
spark plug cap
Install the spark plug cap
securely. If the engine still
won’t start, see your dealer.
loose battery cables Tighten the battery terminal
bolts.
weak battery Charge the battery (page 188).
If charging doesn’t help, see
your dealer.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 209 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
210
If Your Engine Quits or Won’t
Start
SYMPTOM: Engine starts, but runs poorly.
POSSIBLE CAUSE WHAT TO DO
high coolant
temperature
Check the coolant
temperature gauge and high
coolant temperature indicator.
Refer to If the High Coolant
Temperature Indicator Lights,
page 219.
runs erratically, misfires See your dealer.
blubbers (rich fuel
mixture)
See your dealer.
sooty exhaust (rich fuel
mixture)
See your dealer.
detonates or pings
under load
If applicable, switch to the
recommended octane petrol
(page 123) or change your
brand of petrol. If the problem
persists, see your dealer.
afterfires (backfires) See your dealer.
pre-ignition (runs on
after ignition switched
OFF)
See your dealer.
SYMPTOM: Engine starts, but runs poorly or dies when
hot.
POSSIBLE CAUSE WHAT TO DO
poor or inadequate
fuel flow due to
clogged fuel filter
See your dealer.
(ensure clean fuel supply)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 210 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
211
If the Transmission Is Not
Functioning Properly
ESP (manual shift mode):
If one or both shift switches do not function, see the following
instruction. If proper function cannot be restored, see your dealer.
When the engine is running:
1.
Stop the ATV.
2.
Turn the ignition switch to the OFF (w) position.
3.
After the engine stops, turn the ignition switch to the ON (q)
position.
4.
Press both shift switches and check that they are functioning.
5.
If both switches are functioning, shift into neutral and restart the
engine.
If one or both switches are not functioning, see Emergency Gear
Selection & Operation, page 214.
When the engine is stopped and the ignition switch is “ON” (
q
):
1.
Turn the ignition switch to the OFF (w) position.
2.
Turn the ignition switch to the ON (q) position.
3.
Press both shift switches and check that they are functioning.
4.
If both switches are functioning, shift into neutral and restart the
engine.
If one or both switches are not functioning, see Emergency Gear
Selection & Operation, page 214.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 211 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
212
If the Transmission Is Not
Functioning Properly
AUTO (automatic shift mode):
When the automatic transmission is not shifting properly, the gear
position indicator will show “–” and blink.
See your dealer to check and restore the automatic transmission.
If the gear position indicator shows “–” and blink while riding,
perform the following:
1.
Stop the ATV.
2.
Turn the ignition switch to the OFF (w) position.
3.
After the engine stops, turn the ignition switch to the ON (q)
position.
4.
Check the gear position indicator.
If these efforts do not restore proper operation, have your ATV
inspected by your dealer.
When the “–” is blinking in the gear position indicator:
Restart the engine; drive the ATV to a location where it can be
loaded and transported to your dealer.
When the display on the gear position indicator returns to normal:
You may drive on the ATV as usual after restarting the engine.
However, we urge you to have your ATV inspected by your dealer.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 212 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
213
If the Transmission Is Not
Functioning Properly
If the ATV does not move, even through “–” is not blinking in the
gear position indicator:
If your ATV won’t move, it is possible the transmission is locked. Use
the following procedure to unlock the transmission.
1.
Make sure the transmission is in neutral.
2.
Apply the parking brake.
3.
Turn the ignition switch to the OFF (w) position.
4.
Loosen the screw (1) and release the lock plate (2).
5.
Turn the emergency valve (3) by the screwdriver using the inside
of the front fender hole (4) all the way in. With the engine
running, your ATV will move forward slowly at idle.
6.
See your dealer as soon as possible.
When the battery is low (or dead):
• See If the Battery Is Low (or Dead), page 228.
LEFT SIDE
(1) screw
(4)
(2) lock plate
(3)
(2)
(1)
(4) inside of the front fender hole
(3) emergency valve
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 213 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
214
Emergency Gear Selection &
Operation
If the shift switches do not operate, use the following procedure to
manually select a gear so you may drive the vehicle to a location
where it can be loaded and transported to your dealer.
1.
Turn the ignition switch to the ON (q) position.
2.
Remove the seat (page 118), rear fender cover (page 121) and
tank cover assembly (page 119).
3.
Remove the gear change tool (page 116).
4.
Check the neutral indicator.
If the transmission is in neutral, go to step 5.
If the transmission is not in neutral, use the gear change tool to
shift to neutral so you will be able to start the engine. Refer to
How to Shift Gears Manually: (page 215).
5.
Apply the parking brake.
6.
Press the start button to start the engine.
7.
Set 2nd gear position. Refer to How to Shift Gears Manually:
(page 215).
8.
Return the gear change tool to the storage location.
9.
Install the tank cover assembly, rear fender cover and seat.
10.
Get on the ATV. Ride it at a safe speed to a place where it can be
repaired or serviced.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 214 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
215
Emergency Gear Selection &
Operation
How to Shift Gears Manually:
• With the ATV unoccupied, align the hexagonal hole of the gear
change tool (1) with the hexagonal end of the secondary spindle
which is located on the front crankcase.
• To downshift, turn the gear change tool to direction (A).
To upshift, turn the gear change tool to direction (B).
• If the transmission does not shift, rock the vehicle back and forth
and try again.
• Return the gear change tool to the storage location.
Do not attempt to shift gears manually using the gear change tool
while riding.
If the transmission is shifted manually when the electric shift system
is functioning, the system will shutdown automatically and the shift
switches will not operate. To reactivate the system, turn the ignition
switch to the OFF (w) position, then turn it back to the ON (q)
position.
(B)
(1) gear change tool
(A)
(B) upshift (clockwise)
(A) downshift (counterclockwise)
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 215 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
216
If You Have a Flat Tyre
How you handle a flat tyre on the trail depends on how serious the
tyre damage is, and what tools and supplies you have with you.
If you have a slow leak or a minor puncture, use the plug method to
make a temporary repair. (The plug method is applied from the
outside of the tyre and is the same as that for conventional tubeless
tyres.)
A plug-type repair kit, available at most auto parts stores or service
stations, provides a plug, an installation tool, tyre cement, and an
instruction sheet. Follow the instructions provided with the repair kit
to make a temporary repair.
As soon as possible, have the tyre permanently repaired by your
dealer. Any tyre that cannot be repaired should be replaced.
Whenever the ATV is to be operated far from service facilities or
available transportation, we recommend that you carry a tyre pump
and a repair kit with the vehicle.
If the leak is more serious, or a temporary repair doesn’t hold, the
tyre must be replaced. The tyre will also need to be replaced if it is
damaged (page 179). Replacing a tyre involves removing and
reinstalling the wheel (page 217).
If you are unable to repair a flat tyre on the trail, you will need to
send for help. We strongly recommend that you do not try to ride
with a flat tyre. The ATV will be hard to handle, and if the tyre comes
off the rim, it may lock up the wheel and cause you to crash.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 216 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
217
If You Have a Flat Tyre
(cont’d)
Refer to Safety Precautions on page 107.
Removal
1.
Park your ATV on a firm, level surface.
2.
Loosen – but do not remove – the wheel nuts (1).
3.
Raise the front (or rear) wheels off the ground and place a
support block under the vehicle.
4.
Remove the wheel nuts.
5.
Remove the wheel.
• Avoid getting grease, oil, or dirt on the front brake disc or pad
surfaces when removing and installing each wheel. Any
contamination can cause poor brake performance or rapid pad
wear after reassembly.
Emergency Wheel Removal/Installation
(1) wheel nuts (2) wheel rim
(1)
(1)
(2)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 217 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
218
If You Have a Flat Tyre
Installation
1.
Position the wheel.
2.
Position the wheel nuts so that the tapered sides face the wheel
rim (2).
3.
Hand-tighten the wheel nuts on the wheel, then lower the ATV
to the ground before tightening the nuts in a crisscross (rather
than circular) pattern to the specified torque:
64 N·m (6.5 kgf·m , 47 lbf·ft)
If a torque wrench was not used for installation, see your dealer as
soon as possible to verify proper assembly. Improper assembly may
lead to loss of braking capability.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 218 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
219
(cont’d)
If the High Coolant Temperature
Indicator Lights
Normally, the high coolant temperature indicator will only light
momentarily when you turn the ignition to ON (q).
High coolant temperature may be caused by restriction of air flow to
the radiator (such as mud caked on the radiator), extended idling, an
oil leak, a coolant leak, a low oil level, a low coolant level, or
extended operation under adverse conditions.
If the all segment of the coolant temperature gauge and high
coolant temperature indicator are on while you’re riding, don’t
ignore it. Pull safely to a stop. Stop the engine as soon as it’s safe to
do so, and let it cool.
NOTICE
Continuing to ride with high coolant temperature or an overheated
engine can cause serious engine damage.
• A steaming engine indicates a coolant leak. Shut the engine off
and wait until the steaming stops. Look for a leak, but don’t
touch the engine or radiator system. Let everything cool off first.
• Check for any restriction of air flow to the radiator.
• If there’s no obvious problem, leave the engine on so the fan and
coolant circulating system can continue working. Monitor the
coolant temperature gauge and high coolant temperature
indicator. The indicator may turn off after a brief stop with no
load on the engine.
• Check the radiator fan.
If the fan is not working, turn the engine off. Open the fuse box
(page 222) and check the radiator fan fuse. If the fuse is blown,
replace it with the proper (same rating) spare fuse. Start the
engine. If the all segment of the coolant temperature gauge and
high coolant temperature indicator stays on, turn the engine off.
If the radiator fan is working, visually check the coolant level in
the reserve tank, located under the left front fender. It isn’t
necessary to touch the radiator system.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 219 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
220
If the High Coolant Temperature
Indicator Lights
• If the reserve tank is low or empty, don’t ride without adding
coolant (page 140). After adding coolant, turn the engine on and
check the coolant temperature gauge and high coolant
temperature indicator.
If the indicator doesn’t turn off, do not ride. The engine needs
repair.
Transport your ATV to your dealer (page 198).
If the temperature drops to normal, check the coolant level. If it
has gone down, add more coolant.
• Check for an oil leak.
• Check the oil level. If necessary, add the recommended oil
(page 129) to the upper level mark. If you must leave your ATV to
get oil, secure it as much as possible.
• Start the engine, and check that the coolant temperature gauge
and high coolant temperature indicator goes off.
If you are able to resume riding, continue to monitor the coolant
temperature gauge and high coolant temperature indicator
frequently.
If there is an oil leak — do not ride the ATV until the leak is repaired
by your dealer (page 198).
If there’s a mild coolant leak, you can ride for awhile, carefully
watching the coolant temperature gauge and high coolant
temperature indicator. Be prepared to stop and add more coolant or
water. If the leak is bad, transport your ATV to your dealer
(page 198).
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 220 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
221
If a Fuse Blows
All of the electrical circuits on your ATV have fuses to protect them
from damage caused by excess current flow (short circuit or
overload).
If something electrical on your ATV stops working, the first thing you
should check for is a blown fuse (1).
Check all the fuses before looking elsewhere for another possible
cause of the problem. Replace any blown fuses and check
component operation.
The main fuse and the circuit fuses are located under the rear fender
cover.
TRX420FA2 only:
The EPS (Electric Power Steering) fuse is located under the rear
fender cover.
Recommended Fuses
main fuse 1 30 A
main fuse 2 10 A
shift motor fuse 30 A
other fuses 20 A × 2, 10 A
EPS (Electric Power
Steering) fuse
(TRX420FA2 only)
40 A
(1)
(1) blown fuse
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 221 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
222
If a Fuse Blows
Main and Shift Motor Fuses Access
1.
To prevent an accidental short circuit, turn the ignition switch to
OFF (w) before checking or replacing the fuses.
2.
Remove the seat (page 118).
3.
Remove the rear fender cover (page 121).
4.
To access the main fuses (2) (3), and shift motor fuse (4), remove
the fuse box cover (5).
5.
Pull the main fuse out.
If it is blown, install the spare main fuse (6) of the same rating.
(2) main fuse 1 (5) fuse box cover
(5)
(6) spare fuses
UNDER REAR FENDER COVER
(6)
(3) main fuse 2
(3)
(2)
(4) shift motor fuse
(4)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 222 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
223
If a Fuse Blows
Circuit Fuses Access
6.
To check or replace a circuit fuse (7), pull the old fuse out of its
retaining clips.
If the fuse is blown, replace it with a spare fuse (8) of the same
rating.
If you do not have a replacement fuse with the proper rating for the
circuit, install one with a lower rating.
NOTICE
Replacing a fuse with one that has a higher rating greatly increases
the chance of damage to the electrical system.
7.
Install the fuse box cover.
8.
Install the rear fender cover.
9.
Install the seat.
(8)
(7)
(7) circuit fuses (8) spare fuses
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 223 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
224
If a Fuse Blows
EPS (Electric Power Steering) Fuse Access (TRX420FA2 only)
1.
Turn the ignition switch to OFF (w ) before checking the fuse.
2.
Remove the seat (page 118).
3.
Remove the rear fender cover (page 121).
4.
To access the EPS fuse (1), remove the EPS fuse box cover (2).
If the EPS fuse is blown, see your dealer for this service.
5.
Install the EPS fuse box cover.
6.
Install the rear fender cover.
7.
Install the seat.
(1)
UNDER REAR FENDER COVER
(1) EPS fuse (2) EPS fuse box cover
(2)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 224 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
225
If a Fuse Blows
If you do not have a spare fuse and you cannot ride the ATV without
fixing the problem, take a fuse of the same rating or a lower rating
from one of the other circuits that you can do without temporarily.
If you replace a blown fuse with a spare fuse that has a lower rating,
replace the fuse with the correct rating as soon as you can. Also
remember to replace any spare fuses that were installed.
If the replacement fuse of the same rating burns out in a short time,
there is probably a serious electrical problem on your ATV. Leave the
blown fuse in that circuit and have your ATV checked by your dealer.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 225 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
226
If You Crash
Personal safety is your first priority after a crash. If you or anyone else
has been injured, take time to assess the severity of the injuries and
whether it is safe to continue riding. If you cannot ride safely, send
someone for help. Do not ride if you will risk further injury.
If you decide you are capable of riding safely, carefully inspect your
ATV for damage and determine if it is safe to ride. Check the
tightness of critical nuts and bolts securing such parts as the
handlebar, control levers, brakes, and wheels.
If there is minor damage, or you are unsure about possible damage
but decide to try riding the ATV back to your base, ride slowly and
cautiously.
Sometimes, crash damage is hidden or not immediately apparent.
When you get home, thoroughly check your ATV and correct any
problems you find. Also, be sure to have your dealer check the frame
and suspension after any serious crash.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 226 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
227
If You Lose Your Key
Be sure to record your key number (1) at the following space. You’ll
need this number to have a duplicate key made.
If you lose your key and aren’t carrying a duplicate, either get your
spare or have one made. If you don’t know your key number, call the
dealer where you purchased your Honda ATV. They may have it
listed in their records. If they don’t, transport your ATV to them or
the nearest dealer. The dealer will probably have to remove the
ignition switch assembly to find the key number so they can make a
key for you.
KEY NO. __________________________________________________
(1) key number
(1)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 227 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
228
If the Battery Is Low (or Dead)
Your ATV will operate even if the battery is low (or dead), as long as
the engine is running. If the engine is not running, it may be started
using the recoil starter.
1.
Turn the ignition switch to the ON (q) position.
2.
Check if the transmission is in neutral by moving the vehicle back
and forth.
3.
If the transmission is in neutral, the vehicle will move easily. Go to
step 6. If the transmission is not in neutral, the vehicle will not
move.
4.
Remove the gear change tool from under the rear fender cover
(page 116).
5.
Use the gear change tool to shift to neutral so you will be able to
start the engine. Refer to How to Shift Gears Manually:
(page 215).
6.
Apply the parking brake.
7.
Turn the ignition switch to the OFF (w) position, then turn it back
to the ON (q) position.
8.
Use the recoil starter (page 76) to start the engine.
Jump starting is not recommended, especially if you use an
automobile battery. The greater amperage of an automobile battery
when the car engine is running can damage your ATV’s electrical
system.
Bump starting is also not recommended.
If you can’t charge the battery or it appears unable to hold a charge,
contact your dealer.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 228 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
229
If a Component Fails
The brake levers or pedal, control cables, and other components can
be damaged as you ride in dense brush or over rocky terrain. Making
a trailside repair depends on how serious the damage is and what
tools and supplies you have with you.
• If any component of the brake system is damaged, you may be
able to ride carefully back to your base using the other brake
components for slowing or stopping.
• If you damage a throttle cable or other critical component, your
ATV may be unsafe to ride. Carefully assess the damage and
make any repairs that you can. But if there is any doubt, it’s best
to be conservative and safe.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 229 Thursday, May 3, 2018 1:26 PM
Taking Care of the Unexpected
230
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 230 Thursday, May 3, 2018 1:26 PM
Technical Information
231
Technical Information
Tech nical I nformat ion
This section contains dimensions, capacities, and other technical
data, plus information on government requirements and how to
break-in your ATV.
Vehicle Identification ................................................................ 232
Specifications ........................................................................... 234
Break-in Guidelines................................................................... 239
Petrol Containing Alcohol......................................................... 240
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 231 Thursday, May 3, 2018 1:26 PM
Technical Information
232
Vehicle Identification
The VIN, engine serial number, and key number may be required
when ordering replacement parts. Record the numbers here for your
reference.
The VIN (1) is stamped on the front of the frame.
VIN ______________________________________________________
The engine number (2) is stamped on the upper side of the rear
crankcase.
ENGINE No. _______________________________________________
Serial Numbers
FRONT
(1)
(1) VIN
LEFT REAR
(2) engine number
(2)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 232 Thursday, May 3, 2018 1:26 PM
Technical Information
233
Vehicle Identification
The colour label (1) is attached on the left side of the frame.
The colour code is helpful when ordering replacement parts. Record
the colour and code here for your reference.
COLOUR__________________________________________________
CODE ____________________________________________________
Colour Label & Code
LEFT SIDE
(1)
(1) colour label
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 233 Thursday, May 3, 2018 1:26 PM
Technical Information
234
Specifications
Dimensions
overall length 2,103 mm (82.8 in)
overall width 1,205 mm (47.4 in)
overall height 1,174 mm (46.2 in)
wheelbase 1,268 mm (49.9 in)
ground clearance 183 mm (7.2 in)
Fuel & Lubricants
fuel
recommendation
unleaded petrol, research octane
number of 91 or higher
fuel tank capacity 14.7 ℓ (3.88 US gal , 3.23 Imp gal)
including reserve
fuel tank reserve 4.9 ℓ (1.29 US gal , 1.08 Imp gal)
engine oil
capacity
after disassembly:
4.0 ℓ (4.2 US qt , 3.5 Imp qt)
after draining:
3.4 ℓ (3.6 US qt , 3.0 Imp qt)
after draining & oil filter change:
3.6 ℓ (3.8 US qt , 3.2 Imp qt)
engine oil
recommendation
API Service Classification SG or
higher except oils labeled as energy
conserving or resource conserving
on the circular API service label, SAE
10W-30, JASO T 903 standard MA,
Honda 4-stroke oil or an equivalent
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 234 Thursday, May 3, 2018 1:26 PM
Technical Information
235
Specifications
(cont’d)
Fuel & Lubricants (cont’d)
cooling system
recommendation
High quality ethylene glycol
antifreeze containing corrosion
protection inhibitors specifically
recommended for use in aluminum
engines
cooling system
capacity
1.6 ℓ (1.7 US qt , 1.4 Imp qt)
Capacities
passenger capacity
operator only
maximum weight
capacity
220 kg (485 lb)
rider, all cargo and accessories
Engine Specifications
displacement 420 cm
3
(25.6 cu-in)
bore & stroke 86.5 × 71.5 mm
(3.41 × 2.81 in)
compression ratio 9.9 : 1
spark plug
(standard)
BKR5E-11 (NGK) or
K16PR-U11 (DENSO)
spark plug gap 1.00 – 1.10 mm (0.039 – 0.043 in)
valve clearance
(cold)
intake: 0.15 mm (0.006 in)
exhaust: 0.23 mm (0.009 in)
idle speed 1,400 ± 100 min
-1
(rpm)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 235 Thursday, May 3, 2018 1:26 PM
Technical Information
236
Specifications
Power Transmission
primary reduction 2.680
secondary reduction 1.818
final reduction front 3.231
rear 3.154
transmission ratio 1st 3.058
2nd 2.157
3rd 1.541
4th 1.178
5th 0.848
reverse 3.996
final drive shaft
Chassis & Suspension
caster 2°
trail 5 mm (0.2 in)
tyre size, front AT24 × 8-1211
MAXXIS M977
tyre size, rear AT24 × 10-1111
MAXXIS M978
tyre pressure,
front & rear (cold)
Front:
30 kPa (4.4 psi)
Rear:
30 kPa (4.4 psi)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 236 Thursday, May 3, 2018 1:26 PM
Technical Information
237
Specifications
(cont’d)
Electrical
battery GYZ16H
12 V –16 Ah (10HR)
generator 0.45 kW/5,000 min
-1
(rpm)
Lights
headlight (Low/High) 12 V 35/35 W × 2
brake/tail light LED
neutral indicator LED
reverse indicator LED
high coolant
temperature
indicator
LED
PGM-FI indicator LED
PS (Electric Power
Steering) indicator
(TRX420FA2 only)
LED
Fuses
main 1 30 A
main 2 10 A
shift motor 30 A
other 20 A × 2, 10 A
EPS (Electric
Power Steering)
(TRX420FA2 only)
40 A
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 237 Thursday, May 3, 2018 1:26 PM
Technical Information
238
Specifications
Torque Specification
engine oil drain
bolt
25 N·m (2.5 kgf·m, 18 lbf·ft)
engine oil filter
cover bolts
12 N·m (1.2 kgf·m, 9 lbf·ft)
rear final gear oil
drain bolt
12 N·m (1.2 kgf·m, 9 lbf·ft)
rear final gear oil
fill cap
12 N·m (1.2 kgf·m, 9 lbf·ft)
rear final gear oil
level check bolt
12 N·m (1.2 kgf·m, 9 lbf·ft)
front final gear oil
drain bolt
12 N·m (1.2 kgf·m, 9 lbf·ft)
front final gear oil
fill cap
12 N·m (1.2 kgf·m, 9 lbf·ft)
rear brake drain
bolt
12 N·m (1.2 kgf·m, 9 lbf·ft)
wheel nuts 64 N·m (6.5 kgf·m, 47 lbf·ft)
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 238 Thursday, May 3, 2018 1:26 PM
Technical Information
239
Break-in Guidelines
Help assure your ATV’s future reliability and performance by paying
extra attention to how you ride during the first operating day or
25 km (15 miles).
During this period, avoid full-throttle starts, rapid acceleration, and
constant rpm operation.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 239 Thursday, May 3, 2018 1:26 PM
Technical Information
240
Petrol Containing Alcohol
If you decide to use a petrol containing alcohol (gasohol), be sure its
octane rating is at least as high as that recommended above.
There are two types of gasohol: One contains ethanol, and the other
contains methanol. Do not use gasohol that contains more than
10 % ethanol. Do not use gasohol that contains methanol (methyl or
wood alcohol) unless it also contains cosolvents and corrosion
inhibitors for methanol. Never use petrol containing more than 5 %
methanol, even if it has cosolvents and corrosion inhibitors.
Engine performance problems resulting from the use of fuels that
contain alcohol are not covered under the warranty. Honda cannot
endorse the use of fuels containing methanol since evidence of their
suitability is not yet complete.
Before buying fuel from an unfamiliar station, try to find out if the
fuel contains alcohol. If it does, confirm the type and percentage of
alcohol used. If you notice any undesirable operating symptoms
while using a petrol that contains alcohol, or one that you think
contains alcohol, switch to a petrol that you know does not contain
alcohol.
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 240 Thursday, May 3, 2018 1:26 PM
Index
Index
241
Index
A
accessories .................................................................................62
age recommendation .................................................................53
air cleaner,
dust cover .............................................................................150
filter ......................................................................................146
housing drain tube ................................................................151
air pressure,
gauge ....................................................................................117
tyre .......................................................................................175
apparel, protective ......................................................................50
appearance care .......................................................................189
B
bank angle sensor ignition cut-off system ...................................74
battery .....................................................................................184
brake light switch adjustment ...................................................172
brakes,
cables ....................................................................................171
draining water from ..............................................................173
fluid ......................................................................................163
front brake lever ......................................................................42
front brake pad wear .............................................................166
parking ....................................................................................43
rear brake lever .......................................................................42
rear brake lever freeplay ........................................................169
rear brake pedal ......................................................................42
rear brake pedal freeplay .......................................................167
shoe wear .............................................................................171
braking .......................................................................................85
break-in guidelines ...................................................................239
button,
mode ................................................................................14, 19
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 241 Thursday, May 3, 2018 1:26 PM
Index
242
Index
C
capacity, fuel ............................................................................124
care, appearance ......................................................................189
cargo,
loading and operational guidelines ..........................................61
weight limit .............................................................................60
cleaning, appearance care ........................................................189
climbing hills ..............................................................................90
clip ...........................................................................................122
colour label ..............................................................................233
compartment,
owner’s manual .....................................................................117
storage ....................................................................................47
tool kit ..................................................................................116
component fails ........................................................................229
controls & features .....................................................................34
crash, if you ..............................................................................226
crossing or turning on hills or slopes ...........................................95
D
digital clock ................................................................................27
dimmer switch, headlight ...........................................................37
dipstick .....................................................................................129
display check ..............................................................................16
display, Multi-function ................................................................20
drivetrain boots ........................................................................182
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 242 Thursday, May 3, 2018 1:26 PM
Index
243
Index
E
engine,
flooded ...................................................................................73
guard ....................................................................................180
number ................................................................................. 232
oil ..........................................................................................126
pinging ..................................................................................123
starting ....................................................................................71
stop switch ..............................................................................36
stopping ..................................................................................75
won’t start ............................................................................208
environment .............................................................................204
exhaust system,
cleaning ..................................................................................56
purging .................................................................................159
F
final gear,
front ......................................................................................137
rear .......................................................................................134
flag pole bracket ........................................................................45
flat tyre ....................................................................................216
flooded engine ...........................................................................73
front boot guards .....................................................................181
front driveshaft boots ...............................................................183
front driveshaft guards .............................................................181
fuel,
fill cap ................................................................................... 124
gauge ......................................................................................25
recommendation ...................................................................123
refueling ................................................................................124
reserve fuel supply .................................................................124
tank capacity .........................................................................124
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 243 Thursday, May 3, 2018 1:26 PM
Index
244
Index
fuses ........................................................................................221
G
gap, spark plug ................................................................156, 235
gasohol ....................................................................................240
gear shifting ...............................................................................77
gearshift switch ....................................................................41, 80
guards ......................................................................................180
H
headlight dimmer switch ............................................................37
headlight switch .........................................................................37
high coolant temperature indicator ...............................14, 17, 219
hills,
crossing or turning on slopes ...................................................95
riding down hills ...................................................................... 94
riding up hills ...........................................................................90
stopping on hills ......................................................................92
horn button ................................................................................37
hour meter ...........................................................................18, 31
I
identification, vehicle ................................................................232
ignition switch ............................................................................ 34
indicators,
4WD indicator .......................................................18, 20, 23, 35
gear position indicator .............................................................24
high coolant temperature indicator ............................14, 17, 219
maintenance minder indicator .................................................32
neutral indicator ................................................................14, 17
PGM-FI indicator ................................................................14, 17
PS (Electric Power Steering) indicator ...........................14, 17, 48
reverse indicator ................................................................14, 17
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 244 Thursday, May 3, 2018 1:26 PM
Index
245
Index
inspection, pre-ride .....................................................................55
K
key,
lost ........................................................................................ 227
number ................................................................................. 227
kit, tool ....................................................................................116
L
labels, safety .................................................................................5
lamp check .................................................................................15
lever,
2WD/4WD select .....................................................................35
P/R ..........................................................................................43
limit, weight ...............................................................................60
load limits ...................................................................................60
loading guidelines ......................................................................61
lubrication,
engine oil ..............................................................................126
front final gear oil ..................................................................137
rear final gear oil ...................................................................134
M
maintenance,
component locations .............................................................113
hour meter ..............................................................................32
importance ............................................................................105
minder indicator ......................................................................32
precautions ...........................................................................107
record ...................................................................................112
safety ....................................................................................106
schedule ................................................................................108
tripmeter .................................................................................32
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 245 Thursday, May 3, 2018 1:26 PM
Index
246
Index
maximum weight limit ................................................................60
mode button ........................................................................14, 19
modifications ..............................................................................63
multi-function display .................................................................20
N
neutral indicator ................................................................... 14, 17
numbers, serial .........................................................................232
O
obstacles, riding over ..................................................................97
odometer ...................................................................................28
oil,
engine ...................................................................................126
front final gear ......................................................................137
rear final gear ........................................................................134
operation component locations ..................................................11
owner’s manual storage ...........................................................117
P
parking ...............................................................................43, 100
passenger, no carrying ................................................................ 53
pavement, no riding on ..............................................................67
petrol ....................................................................................... 123
petrol containing alcohol ..........................................................240
pinging, engine ........................................................................123
plug, spark ...............................................................................155
pre-ride inspection ......................................................................55
problems, unexpected ..............................................................205
propeller shaft boots & yoke joint boot .....................................182
protective apparel .......................................................................50
EPS (Electric Power Steering) .......................................................48
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 246 Thursday, May 3, 2018 1:26 PM
Index
247
Index
R
rear final gear oil ......................................................................134
recoil starter ...............................................................................38
removal,
rear fender cover ...................................................................121
seat .......................................................................................118
tank cover assembly ..............................................................119
reverse,
assist cable ............................................................................154
assist lever .............................................................................154
gear, shifting into ..............................................................43, 83
indicator ............................................................................14, 17
riding in ...................................................................................83
rider training ..............................................................................52
riding,
basic operations ......................................................................65
clothing ...................................................................................50
over obstacles ..........................................................................97
precautions .............................................................................67
preparing for .........................................................................196
safety ........................................................................................2
safety precautions ...................................................................67
through water .........................................................................98
S
safety,
important precautions ...........................................................107
labels .........................................................................................5
riding precautions ....................................................................67
schedule, maintenance .............................................................108
seat removal .............................................................................118
select lever,
2WD/4WD select .....................................................................35
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 247 Thursday, May 3, 2018 1:26 PM
Index
248
Index
serial numbers ..........................................................................232
shifting gears ..............................................................................77
skid plates ................................................................................180
skidding or sliding ......................................................................89
spark arrester ...........................................................................159
spark knock ..............................................................................123
spark plug ................................................................................155
specifications ............................................................................234
speedometer ........................................................................18, 20
stalled engine .............................................................................74
stalling on a hill ..........................................................................92
start button ................................................................................36
starting,
engine .....................................................................................71
troubleshooting .....................................................................208
stop switch, engine ....................................................................36
stopping engine .........................................................................75
storage,
ATV .......................................................................................200
compartment ..........................................................................47
owner’s manual .....................................................................117
suspension,
adjustment ............................................................................ 160
spring pre-load ......................................................................161
switch,
downshift ..........................................................................41, 80
engine stop .............................................................................36
headlight .................................................................................37
headlight dimmer ....................................................................37
ignition ....................................................................................34
upshift ...............................................................................41, 80
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 248 Thursday, May 3, 2018 1:26 PM
Index
249
Index
T
throttle,
cable .............................................................................152, 153
lever ........................................................................39, 152, 153
tool kit .....................................................................................116
trailer hitch .................................................................................46
trailer towing,
operational guidelines ............................................................. 61
weight limits ............................................................................60
training, rider .............................................................................52
transporting your ATV ..............................................................198
tripmeter ....................................................................................28
trouble, unexpected .................................................................205
troubleshooting, starting ..........................................................208
turning,
on hills or slopes ......................................................................95
on level ground .......................................................................87
tyres,
air pressure ............................................................................175
flat ........................................................................................ 216
repairing ................................................................................178
replacing ...............................................................................179
tread conditions ............................................................176, 177
V
valve clearance .........................................................................158
vehicle identification no. (VIN) ..................................................232
W
warning labels ..............................................................................5
washing your ATV ....................................................................190
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 249 Thursday, May 3, 2018 1:26 PM
Index
250
Index
water,
draining from brakes .............................................................173
riding through .........................................................................98
weight limit ................................................................................60
wheel removal ..........................................................................217
19 TRX420FA1 FA2 (U)-32HR3E400.book Page 250 Thursday, May 3, 2018 1:26 PM
00X32-HR3-E400
32HR3E40 WPCXXXX.2018.XX.19
PRINTED IN USA
U
