Black
PANTONE
286C
Trim size: A6 (105 * 148 mm)
2021
2021
PRINTED IN XXXX
XXXX.2020.XX.M
31K75A50
00X31-K75-A501
CBR300R/RA
EN
CBR300R/RA
This manual should be considered a permanent part of the vehicle
and should remain with the vehicle 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.
The vehicle pictured in this owner’s manual may not match your
actual vehicle.
© 2020 Honda Motor Co., Ltd.
20210324105438_31K75A500_enu_BOOK Page 1 Wednesday, March 24 2021 11:02:25 JST
Welcome
Congratulations on your purchase of a new
Honda vehicle. Your selection of a Honda
makes you part of a worldwide family of
satisfied customers who appreciate Honda's
reputation for building quality into every
product.
To ensure your safety and riding pleasure:
● Read this owner's manual carefully.
● Follow all recommendations and
procedures contained in this manual.
● Pay close attention to safety messages
contained in this manual and on the
vehicle.
To protect your investment, we urge you to
take responsibility for keeping your vehicle
well serviced and maintained. Also, observe
the break-in guidelines, and always perform
the pre-ride inspection and other periodic
checks in this manual.
When service is required, remember that
your Honda dealer knows your vehicle best.
If you have the required mechanical “know-
how” and tools, you can purchase an official
Honda Service Manual to help you perform
many maintenance and repair tasks. 2 P. 103
Read the warranty information thoroughly so
that you understand the warranty coverage
and that you are aware of your rights and
responsibilities. 2 P. 104
You may also want to visit our website at
www.powersports.honda.com.
Happy riding!
20210324105438_31K75A500_enu_BOOK Page 2 Wednesday, March 24 2021 11:02:25 JST
A Few Words About Safety
Your safety, and the safety of others, is very
important. Operating this vehicle safely is an
important responsibility.
To help you make informed decisions about
safety, we have provided operating
procedures and other information on safety
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 a vehicle. You must
use your own good judgment.
You will find important safety information in a
variety of forms, including:
● Safety labels on the vehicle
●
Safety Messages preceded by a safety alert
symbol and one of three signal words:
DANGER, WARNING, or CAUTION.
These signal words mean:
3DANGER
You WILL be KILLED or SERIOUSLY
HURT if you don’t follow instructions.
3WARNING
You CAN be KILLED or SERIOUSLY
HURT if you don’t follow instructions.
3CAUTION
You CAN be HURT if you don’t follow
instructions.
Other important information is
provided under the following titles:
NOTICE
Information to help you avoid
damage to your vehicle, other
property, or the environment.
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Safety Guidelines................................................. P. 3
Safety Labels.........................................................P. 8
Safety Precautions............................................. P. 10
Riding Precautions ............................................ P. 11
Accessories & Modifications........................... P. 15
Loading ................................................................ P. 16
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This section contains important information for safe riding of your vehicle.
Please read this section carefully.
Vehicle Safety
Safety Guidelines
Follow these guidelines to enhance your safety:
● Perform all routine and regular inspections
specified in this manual.
● Stop the engine and keep sparks and flame
away before filling the fuel tank.
● Do not run the engine in enclosed or partly
enclosed areas. Carbon monoxide in
exhaust gases is toxic and can kill you.
Always Wear a Helmet
It's a proven fact: helmets and protective
apparel significantly reduce the number and
severity of head and other injuries. So always
wear an approved helmet and protective
apparel. 2 P. 10
Before Riding
Make sure that you are physically fit, mentally
focused and free of alcohol and drugs. Check
that you and your passenger are both wearing
an approved helmet and protective apparel.
Instruct your passenger on holding onto the
grab rails or your waist, leaning with you in
turns, and keeping their feet on the footpegs,
even when the vehicle is stopped.
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Safety Guidelines
Vehicle Safety
3
Continued
Take Time to Learn & Practice
Even if you have ridden other vehicles, practice
riding in a safe area to become familiar with
how this vehicle works and handles, and to
become accustomed to the vehicle's size and
weight.
We recommend that all riders take a certified
course approved by the Motorcycle Safety
Foundation (MSF) or a state approved training
course. New riders should start with the basic
course, and even experienced riders will find the
advanced course beneficial.
For information about the MSF training course
nearest you, call the national toll-free number:
(800) 446-9227.
Other riding tips can be found in the You and
Your Motorcycle Riding Tips booklet that came
with your vehicle.
Ride Defensively
Always pay attention to other vehicles around
you, and do not assume that other drivers see
you. Be prepared to stop quickly or perform an
evasive maneuver.
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Safety Guidelines
Vehicle Safety
4
Make Yourself Easy to See
Make yourself more visible, especially at night,
by wearing bright reflective clothing, positioning
yourself so other drivers can see you, signaling
before turning or changing lanes, and using
your horn when necessary.
Ride within Your Limits
Never ride beyond your personal abilities or
faster than conditions warrant. Fatigue and
inattention can impair your ability to use good
judgment and ride safely.
Don't Drink or Use Drugs and Ride
Alcohol or drugs and riding don't mix. Even one
alcoholic drink can reduce your ability to
respond to changing conditions, and your
reaction time gets worse with every additional
drink. The same is true for drug use. Don't drink
or use and ride, and don't let your friends do it
either.
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Safety Guidelines
Vehicle Safety
5
Continued
Keep Your Honda in Safe Condition
It's important to keep your vehicle properly
maintained and in safe riding condition.
Inspect your vehicle before every ride and
perform all recommended maintenance. Never
exceed load limits (2 P. 16), and do not modify
your vehicle or install accessories that would
make your vehicle unsafe (2 P. 15).
If You are Involved in a Crash
Personal safety is your first priority. 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. Call for emergency
assistance if needed. Also follow applicable laws
and regulations if another person or vehicle is
involved in the crash.
If you decide to continue riding, first turn the
ignition switch to the OFF position, and evaluate
the condition of your vehicle. Inspect for fluid
leaks, check the tightness of critical nuts and
bolts, and check the handlebars, control levers,
brakes, and wheels. Ride slowly and cautiously.
Your vehicle may have suffered damage that is
not immediately apparent. Have your vehicle
thoroughly checked at a qualified service facility
as soon as possible.
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Safety Guidelines
Vehicle Safety
6
Carbon Monoxide Hazard
Exhaust contains poisonous carbon monoxide, a
colorless, odorless gas. Breathing carbon
monoxide can cause loss of consciousness and
may lead to death.
If you run the engine in confined or even partly
enclosed area, the air you breathe could
contain a dangerous amount of carbon
monoxide.
Never run your vehicle inside a garage or other
enclosure.
3WARNING
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 colorless, 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.
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Safety Guidelines
Vehicle Safety
7
Safety Labels
Safety and information labels on your vehicle
provide important safety information and may
warn you of potential hazards that could cause
serious injury. Read these labels carefully and
don't remove them.
If a label comes off or becomes hard to read,
contact your dealer for a replacement.
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Safety Labels
Vehicle Safety
8
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Safety Labels
Vehicle Safety
9
Safety Precautions
● Ride cautiously and keep your hands on the
handlebars and feet on the footpegs.
● Keep passenger's hands onto the grab rails
or your waist, passenger's feet on the
footpegs while riding.
● Always consider the safety of your
passenger, as well as other drivers and
riders.
Protective Apparel
Make sure that you and any passenger are
wearing an approved helmet, eye protection,
and high-visibility protective clothing. Avoid
wearing loose clothes that could get caught on
any part of the vehicle. Ride defensively in
response to weather and road conditions.
#
Helmet
Should be safety-standard certified, high-
visibility, and correct size for your head
● Must fit comfortably but securely, with the
chin strap fastened.
● Face shield with unobstructed field of vision
or other approved eye protection
Look for a DOT (Department of Transportation)
certification label on any helmet you buy.
3WARNING
Not wearing a helmet increases the
chance of serious injury or death in a
crash.
Make sure that you and any passenger
always wear an approved helmet and
protective apparel.
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Safety Precautions
Vehicle Safety
10
#
Gloves
Full-finger leather gloves with high abrasion
resistance
#
Boots or Riding Shoes
Sturdy boots with non-slip soles and ankle
protection
#
Jacket and Pants
Protective, highly visible, long-sleeved jacket
and durable long pants for riding (or a
protective suit)
Riding Precautions
Break-in Period
During the first 300 miles (500 km) of running,
follow these guidelines to ensure your vehicle's
future reliability and performance.
● Avoid full-throttle starts and rapid
acceleration.
● Avoid hard braking and rapid down-shifts.
● Ride conservatively.
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Riding Precautions
Vehicle Safety
11
Continued
Brakes
Observe the following guidelines:
● Avoid excessively hard braking and
downshifting.
u Sudden braking can reduce the vehicle's
stability.
u Where possible, reduce speed before
turning; otherwise you risk sliding out.
● Exercise caution on low traction surfaces.
u The tires slip more easily on such
surfaces and braking distances are
longer.
● Avoid continuous braking.
u Repeated braking, such as when
descending long, steep slopes can
seriously overheat the brakes, reducing
their effectiveness. Use engine braking
with intermittent use of the brakes to
reduce speed.
● For full braking effectiveness, operate both
the front and rear brakes together.
#
Anti-lock Brake System (ABS)
CBR300RA
This model is equipped with an Anti-lock Brake
System (ABS) designed to help prevent the
brakes from locking up during hard braking.
● ABS does not reduce braking distance. In
certain circumstances, ABS may result in a
longer stopping distance.
● ABS does not function at speeds below 6
mph (10 km/h).
● The brake lever and pedal may recoil slightly
when applying the brakes. This is normal.
● Always use the recommended front/rear
tires and sprockets to ensure correct ABS
operation.
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Riding Precautions
Vehicle Safety
12
#
Engine Braking
Engine braking helps slow your vehicle down
when you release the throttle. For further
slowing action, downshift to a lower gear. Use
engine braking with intermittent use of the
brakes to reduce speed when descending long,
steep slopes.
#
Wet or Rainy Conditions
Road surfaces are slippery when wet, and wet
brakes further reduce braking efficiency.
Exercise extra caution when braking in wet
conditions.
If the brakes get wet, apply the brakes while
riding at low speed to help them dry.
Parking
● Park on a firm, level surface.
● If you must park on a slight incline or loose
surface, park so that the vehicle cannot
move or fall over.
● Make sure that high-temperature parts
cannot come into contact with flammable
materials.
● Do not touch the engine, muffler, brakes
and other high-temperature parts until they
cool down.
● To reduce the likelihood of theft, always lock
the handlebars and remove the key when
leaving the vehicle unattended.
Use of an anti-theft device is also
recommended.
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Riding Precautions
Vehicle Safety
13
Continued
#
Parking with the Side Stand
1.
Stop the engine.
2.
Push the side stand down.
3.
Slowly lean the vehicle to the left until its
weight rests on the side stand.
4.
Turn the handlebars fully to the left.
u Turning the handlebars to the right
reduces stability and may cause the
vehicle to fall.
5.
Turn the ignition switch to the LOCK
position and remove the key. 2 P. 28
Refueling and Fuel Guidelines
Follow these guidelines to protect the engine,
fuel system and catalytic converter:
● Use only unleaded gasoline.
● Use recommended octane number. Using
lower octane gasoline will result in
decreased engine performance.
● Do not use fuels containing a high
concentration of alcohol. 2 P. 102
● Do not use stale or contaminated gasoline
or an oil/gasoline mixture.
● Avoid getting dirt or water in the fuel tank.
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Riding Precautions
Vehicle Safety
14
Accessories &
Modifications
We strongly advise that you do not add any
accessories that were not specifically designed
or approved for your vehicle by Honda or make
modifications to your vehicle from its original
design. Doing so can make it unsafe.
Modifying your vehicle may also void your
warranty and make your vehicle illegal to
operate on public roads. Before deciding to
install accessories on your vehicle, be certain
the modification is safe and legal.
3WARNING
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.
Do not pull a trailer with, or attach a sidecar to,
your vehicle. Your vehicle was not designed for
these attachments, and their use can seriously
impair your vehicle's handling.
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Accessories & Modifications
Vehicle Safety
15
Loading
● Carrying extra weight affects your vehicle's
handling, braking and stability.
Always ride at a safe speed for the load you
are carrying.
● Avoid carrying an excessive load and keep
within specified load limits.
Maximum weight capacity/Maximum
weight in storage compartment 2 P. 110
● Tie all luggage securely, evenly balanced
and close to the center of the vehicle.
● Do not place objects near the lights or the
muffler.
3WARNING
Overloading or improper loading can
cause a crash and you can be seriously
hurt or killed.
Follow all load limits and other loading
guidelines in this manual.
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Loading
Vehicle Safety
16
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Vehicle Safety
17
Parts Location
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Operation Guide
18
Fuse box (P.82)
Battery (P.54)
Throttle grip (P.70)
Coolant reserve tank (P.60)
Rear brake fluid
reservoir
(P.62
)
Engine oil fill cap (P.58)
Front brake fluid reservoir
(P.62
)
Main fuse (P.83)
ABS fuse
CBR300RA
(P.84)
Engine oil level inspection
window
(P.58
)
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Operation Guide
19
Clutch lever (P.67)
Fuel fill cap (P.31)
Document bag (P.32)
Drive chain (P.66)
Side stand (P.65)
Shift lever (P.30)
Front seat (P.56)
Rear seat (P.57)
Tool kit (P.32)
Rear suspension spring
preload adjuster
(P.71
)
Helmet holder (P.32)
Instruments
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Operation Guide
20
Tachometer
NOTICE
Do not operate the engine in
the tachometer red zone.
Excessive engine speed can
adversely affect engine life.
Tachometer red zone
(excessive engine rpm range)
RESET
button
Changing the Speed and Mileage Unit
Press and hold
MODE
button to change the speed and mileage units (“mph” and “mile” /
“km/h” and “km”) for the speedometer, odometer and tripmeter at normal display.
MODE
button
Press
RESET
button to select either “mph” and “mile” or “km/h” and “km”, then press
and hold
MODE
button to set.
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Operation Guide
21
Continued
Remaining fuel when only 1st (E) segment
starts flashing:
approximately 0.82 US gal (3.1 L)
Fuel gauge
Speedometer
If any part of these displays does not come on when it should, have your dealer check for
problems.
When the ignition switch is turned to the ON position, all the mode and digital segments
will show.
Display Check
Coolant temperature gauge ( )
When the coolant is over specified
temperature, the segment H flashes.
If it comes on while riding: (P.74)
If the fuel gauge indicator flashes in
a repeat pattern or turns off:
(P.76
)
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Operation Guide
22
Instruments (Continued)
Clock (12-hour display)
Odometer [TOTAL] & Tripmeter
[TRIP]
MODE
button switches between
odometer and tripmeter.
• Odometer: Total distance ridden.
• Tripmeter: Distance ridden since
tripmeter was reset (press and
hold
RESET
button to reset to
0.0 mile/km).
MODE
button
RESET
button
To set the clock:
a
Turn the ignition switch to the ON position.
b
Press and hold
MODE
and
RESET
buttons
until the hour digits start flashing.
c
Press
RESET
button until the desired hour
and AM/PM are displayed.
u
Press and hold
RESET
button to
advance the hour fast.
d
Press
MODE
button. The minute digits start
flashing.
e
Press
RESET
button until the desired minute
is displayed.
u Press and hold
RESET
button to
advance the minute fast.
f
Press
MODE
button. The clock is set.
If
MODE
button was not pressed during
the adjustment, adjustment will be
cancelled by the following conditions.
u No buttons were pressed for about
30 seconds.
u Turn the ignition switch to the OFF
position and then to the ON position.
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Operation Guide
23
Indicators
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Operation Guide
24
Comes on briefly when the ignition switch is
turned to the ON position with the engine stop
switch in the
(Run) position.
If it comes on while engine is running:
(P.75
)
PGM-FI (Programmed Fuel Injection)
malfunction indicator lamp (MIL)
If one of these indicators does not come on when it should, have your dealer check for
problems.
ABS (Anti-lock Brake System)
indicator
CBR300RA
Comes on when the ignition switch is turned
to the ON position. Goes off when your speed
reaches approximately 6 mph (10 km/h).
If it comes on while riding: (P.75)
Comes on when the ignition switch is turned to
the ON position with the engine stop switch in
the
(Stop) position.
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Operation Guide
25
Right turn signal indicator
Left turn signal indicator
High beam indicator
Neutral indicator
Comes on when the transmission is
in Neutral.
Switches
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Operation Guide
26
Headlight dimmer switch
• : High beam
• : Low beam
u Pressing the switch turns
the turn signal off.
Turn signal switch
Start button
Horn button
Engine stop switch
Should normally remain in the
(Run) position.
u In an emergency, switch to the
(Stop) position (the starter motor
will not operate) to stop the
engine.
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Operation Guide
27
Continued
Ignition Switch
Switches the electrical system on/off,
locks the steering.
u Key can be removed when in the OFF or
LOCK position.
ON
Turns electrical system
on for starting/riding.
OFF
Turns engine off.
LOCK
Locks steering.
Steering Lock
Lock the steering when parking to help
prevent theft.
A U-shaped wheel lock or similar device is
also recommended.
#
Locking
a
Turn the handlebars all the way to the left.
b
Push the key down, and turn the ignition
switch to the LOCK position.
u Jiggle the handlebars if the lock is
difficult to engage.
c
Remove the key.
#
Unlocking
Insert the key, push it in, and turn the ignition
switch to the OFF position.
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Operation Guide
28
Switches (Continued)
Push
b
Turn
Ignition
key
a
Starting the Engine
Start your engine using the following
procedure, regardless of whether the engine
is cold or warm.
NOTICE
• If the engine does not start within 5 seconds,
turn the ignition switch to the OFF position
and wait 10 seconds before trying to start
the engine again to recover battery voltage.
•
Extended fast idling and revving the engine can
damage the engine, and the exhaust system.
•
Snapping the throttle or fast idling for more
than about 5 minutes may cause exhaust
pipe discoloration.
•
The engine will not start if the throttle is fully open.
a
Make sure the engine stop switch is in the
(Run) position.
b
Turn the ignition switch to the ON position.
c
Shift the transmission to Neutral (
N
indicator comes on). Alternatively, pull in the
clutch lever to start your vehicle with the
transmission in gear so long as the side
stand is raised.
d
Press the start button with the throttle
completely closed.
If the engine does not start:
a
Open the throttle fully and press the start
button for 5 seconds.
b
Repeat the normal starting procedure.
c
If the engine starts, open the throttle slightly
if idling is unstable.
d
If the engine does not start, wait 10 seconds
before trying steps a & b again.
#
If Engine Will Not Start (P.73
)
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Operation Guide
29
a
c
d
b
Shifting Gears
Your vehicle transmission has 6 forward
gears in a one-down, five-up shift pattern.
If you put the vehicle in gear with the side
stand down, the engine will shut off.
#
Recommended Shift Points
Shifting Up
From 1st to 2nd 12 mph (20 km/h)
From 2nd to 3rd 19 mph (30 km/h)
From 3rd to 4th 25 mph (40 km/h)
From 4th to 5th 31 mph (50 km/h)
From 5th to 6th 37 mph (60 km/h)
Shifting Down
From 6th to 5th 28 mph (45 km/h)
From 5th to 4th 22 mph (35 km/h)
From 4th to 3rd 16 mph (25 km/h)
NOTICE
Improper shifting can damage the engine,
transmission, and drive train. Also, coasting or
towing the vehicle for long distances with the
engine off can damage the transmission.
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Operation Guide
30
2
3
4
5
6
1
N
Refueling
Do not fill with fuel above the filler neck plate.
Fuel type: Unleaded gasoline only
Recommended fuel octane number:
Pump Octane Number (PON) 86 or higher.
Tank capacity: 3.43 US gal (13.0 L)
#
Refueling and Fuel Guidelines (P.14)
Opening the Fuel Fill Cap
Open the lock cover, insert the ignition key,
and turn it clockwise to open the fuel fill cap.
Closing the Fuel Fill Cap
a
After refueling, align the fuel fill cap latch
with the slot in the filler neck. Push the fuel
fill cap into the filler neck until it snaps
closed and locks.
b
Remove the ignition key and close the lock
cover.
u
The ignition key cannot be removed if
the fuel fill cap is not locked.
3WARNING
Gasoline 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.
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Operation Guide
31
Ignition key
Filler neck plate
Fuel fill cap
Lock cover
Storage Equipment
The helmet holder, helmet set wire (in the
tool kit), tool kit, storage compartment, and
document bag are located under the rear
seat.
u
Maximum Weight Limit: 6.6 lb (3.0 kg)
u
Use the helmet holder only when parked.
#
Removing the Rear Seat (P.57)
3WARNING
Riding with a helmet attached to the
holder can interfere with the rear wheel
or suspension and could cause a crash
in which you can be seriously hurt or
killed.
Use the helmet holder only while
parked. Do not ride with a helmet
secured by the holder.
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Operation Guide
32
Helmet set wire
Helmet holder
Storage compartment
Document bag
Tool kit
Importance of Maintenance ........................... P. 34
Maintenance Schedule..................................... P. 36
Maintenance Record......................................... P. 39
Maintenance Fundamentals ...........................P. 40
Removing & Installing Body Components..P. 54
Battery.................................................................... P. 54
Clip.......................................................................... P. 55
Front Seat.............................................................. P. 56
Rear Seat ...............................................................P. 57
Engine Oil ............................................................P. 58
Coolant.................................................................P. 60
Brakes................................................................... P. 62
Side Stand ........................................................... P. 65
Drive Chain..........................................................P. 66
Clutch ...................................................................P. 67
Throttle ................................................................ P. 70
Other Adjustments............................................ P. 71
Adjusting the Rear Suspension ........................ P. 71
20210324105438_31K75A500_enu_BOOK Page 36 Wednesday, March 24 2021 11:02:25 JST
Please read “Importance of Maintenance” and “Maintenance Fundamentals” carefully
before attempting any maintenance. Refer to “Specifications” for service data.
An optional larger tool kit may be available.
Check with your Honda dealer's parts department.
Maintenance
Importance of Maintenance
Importance of Maintenance
Keeping your vehicle well-maintained is
absolutely essential to your safety and to
protect your investment, obtain maximum
performance, avoid breakdowns, and reduce air
pollution. Maintenance is the owner's
responsibility. Be sure to inspect your vehicle
before each ride, and perform the periodic
checks specified in the Maintenance Schedule.
2 P. 36
3WARNING
Improperly maintaining your vehicle 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.
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Maintenance
34
For information about the exhaust emission and
noise emission requirements of the U.S.
Environmental Protection Agency (EPA), and the
California Air Resources Board (CARB). 2 P. 96
Maintenance, replacement or repair of the
emission control devices and systems may
be performed by any vehicle repair
establishment or individual using parts
that are “certified” to EPA standards.
Maintenance Safety
Always read the maintenance instructions
before you begin each task, and make sure that
you have the tools, parts, and skills required.
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.
Follow these guidelines when performing
maintenance.
●
Stop the engine and remove the key.
●
Place your vehicle on a firm, level surface
using the side stand or a maintenance stand
to provide support.
●
Allow the engine, muffler, brakes, and other
high-temperature parts to cool before
servicing as you can get burned.
●
Run the engine only when instructed, and
do so in a well-ventilated area.
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Importance of Maintenance
Maintenance
35
Maintenance Schedule
The maintenance schedule specifies the
maintenance requirements necessary to ensure
safe, dependable performance, and proper
emission control.
Maintenance work should be performed in
accordance with Honda's standards and
specifications by properly trained and equipped
technicians. Your dealer meets all of these
requirements. All scheduled maintenance is
considered a normal owner operating cost and
will be charged to you by your dealer. Keeping
an accurate maintenance record will help
ensure your vehicle is properly maintained.
2 P. 39
Make sure whoever performs the scheduled
maintenance completes the maintenance
record. Retain all service documents. If you sell
your vehicle, these service documents should
be transferred with the vehicle to the new
owner.
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Maintenance
36
Items
Frequency
*1
× 1,000 mi 0.6 4 8 12 16 20 24
Refer to
page
× 1,000 km 1.0 6.4 12.8 19.2 25.6 32.0 38.4
Emission-Related Items
Fuel Line –
Throttle Operation 70
Air Cleaner
*2
–
Crankcase Breather
*3
–
Spark Plug
Every 16,000 mi (25,600 km):
Every 32,000 mi (51,200 km):
–
Valve Clearance –
Engine Oil
Initial = 600 mi (1,000 km) or 1 month:
Regular = Every 8,000 mi (12,800 km) or 12 months:
–
Engine Oil Filter –
Engine Idle Speed –
Radiator Coolant
*5
60
Cooling System –
Secondary Air Supply System –
Evaporative Emission Control System
*4
–
Maintenance Level Maintenance Legend
:
Intermediate. We recommend service by your dealer, unless
you have the necessary tools and are mechanically skilled.
Procedures are provided in an official Honda Service
Manual (2 P. 103).
:
:
:
:
Inspect (clean, adjust, lubricate, or replace, if necessary)
Clean
Lubricate
Replace
: Technical. In the interest of safety, have your vehicle
serviced by your dealer.
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Maintenance Schedule
Maintenance
37
Continued
Items
Frequency
*1
× 1,000 mi 0.6 4 8 12 16 20 24
Refer to
page
× 1,000 km 1.0 6.4 12.8 19.2 25.6 32.0 38.4
Non-Emission-Related Items
Drive Chain
Every 500 mi (800 km): ,
66
Brake Fluid
*5
62
Brake Pads Wear 63
Brake System 40
Brake Light Switch 64
Headlight Aim –
Clutch System 67
Side Stand 65
Suspension 71
Nuts, Bolts, Fasteners –
Wheels/Tires 50
Steering Head Bearings –
Notes:
*
1 : At higher odometer readings, repeat at the frequency interval established here.
*
2 : Service more frequently when riding in unusually wet or dusty areas.
*
3 : Service more frequently when riding in rain or at full throttle.
*
4 : 50 STATE (meets California).
*
5 : Replace every 2 years, or at indicated odometer intervals, whichever comes first. Replacement requires mechanical skill.
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Maintenance Schedule
Maintenance
38
Maintenance Record
Distance Odometer Date Performed By: Notes
600 miles (1,000 km)
4,000 miles (6,400 km)
8,000 miles (12,800 km)
12,000 miles (19,200 km)
16,000 miles (25,600 km)
20,000 miles (32,000 km)
24,000 miles (38,400 km)
28,000 miles (44,800 km)
32,000 miles (51,200 km)
36,000 miles (57,600 km)
40,000 miles (64,000 km)
44,000 miles (70,400 km)
48,000 miles (76,800 km)
52,000 miles (83,200 km)
56,000 miles (89,600 km)
60,000 miles (96,000 km)
64,000 miles (102,400 km)
68,000 miles (108,800 km)
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Maintenance
39
Maintenance Fundamentals
Pre-ride Inspection
To ensure safety, it is your responsibility to
perform a pre-ride inspection and make sure
that 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 tire,
can be a major inconvenience.
Check the following items before you get on
your vehicle:
● Tire tread wear and air pressures are within
limits. 2 P. 50
●
Lights, horn, and turn signals operate
normally.
●
Check the condition of the drive chain.
Adjust slack and lubricate as needed. 2 P. 47
Check the following items if you are carrying a
passenger or cargo:
●
Combined weight is within load limits.
2 P. 110
●
Cargo is secured properly.
● Suspension is adjusted to suit load. 2 P. 71
Check the following items after you get on your
vehicle:
● Throttle action moves smoothly without
binding. 2 P. 70
● Brake lever and pedal operate normally.
● Check the fuel level and refuel when
needed. 2 P. 14, 2 P. 31
● Engine stop switch functions properly.
2 P. 26
Check the following items at regular intervals:
●
Oil level is between the upper and lower
level marks. 2 P. 58
●
Brake fluid level is
Front: above the LWR level mark. 2 P. 62
Rear: between the UPPER and LOWER level
marks. 2 P. 62
●
Engine coolant level is between the UPPER
and LOWER level marks. 2 P. 60
●
Side stand functions properly. 2 P. 65
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Maintenance
40
Tires and wheels
Check the air pressure (2 P. 50), examine tread for wear and damage
(2 P. 50), and check the wheels for damage.
Fluid levels
Check the engine oil level (2 P. 58), engine coolant level (2 P. 60),
and brake fluid level (2 P. 62).
Lights
Check that the headlight, brake light, taillight, turn signals and license
plate light are working properly.
Controls
Check the freeplay of the clutch lever (2 P. 67), and throttle grip
(2 P. 70).
Drive chain
Check the slack (2 P. 66), adjust the slack, and lubricate (2 P. 48) as
needed.
Fuses Check that you have a full supply of spare fuses.
Nuts & bolts Check the major nuts and bolts, and tighten as needed.
Periodic Checks
You should also perform other periodic
maintenance checks at least once a month
regardless of how often you ride, or more often
if you ride frequently.
Also, check the odometer reading against the
Maintenance Schedule and perform all
maintenance that is due. 2 P. 36
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Maintenance Fundamentals
Maintenance
41
Replacing Parts
Always use Honda Genuine Parts or their
equivalents to ensure reliability and safety.
When ordering colored components, specify
the model name, color, and code mentioned on
the color label.
The color label is attached to the frame under
the rear seat. 2 P. 57
3WARNING
Installing non-Honda parts may make
your vehicle unsafe and cause a crash in
which you can be seriously hurt or
killed.
Always use Honda Genuine Parts or
equivalents that have been designed
and approved for your vehicle.
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Maintenance Fundamentals
Maintenance
42
Color label
Battery
Your vehicle has a maintenance-free type battery.
You do not have to check the battery electrolyte
level or add distilled water. Clean the battery
terminals if they become dirty or corroded.
Do not remove the battery cap seals. There is
no need to remove the cap when charging.
NOTICE
An improperly disposed of battery can be harmful to the
environment and human health.
Always confirm local regulations for proper battery
disposal instruction.
#
What to do in an emergency
If any of the following occur, immediately see
your doctor.
● Electrolyte splashes into your eyes:
u Wash your eyes repeatedly with cool
water for at least 15 minutes. Using water
under pressure can damage your eyes.
●
Electrolyte splashes onto your skin:
u
Remove affected clothing and wash your
skin thoroughly using water.
● Electrolyte splashes into your mouth:
u Rinse mouth thoroughly with water, and
do not swallow.
3WARNING
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 servicing.
WARNING: Battery posts, terminals, and
related accessories contain lead and lead
compounds.
Wash your hands after handling.
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Maintenance Fundamentals
Maintenance
43
Continued
#
Cleaning the Battery Terminals
1.
Remove the battery. 2 P. 54
2.
If the terminals are starting to corrode and
are coated with a white substance, wash
with warm water and wipe clean.
3.
If the terminals are heavily corroded, clean
and polish the terminals with a wire brush or
sandpaper. Wear safety glasses.
4.
After cleaning, reinstall the battery.
The battery has a limited life span. Consult your
dealer about when you should replace the
battery. Always replace the battery with another
maintenance-free battery of the same type.
#
Charging
If you use electrical accessories that drain the
battery or you do not ride frequently, we
recommend that you charge the battery every
30 days using a charger designed specifically for
your Honda, which can be purchased from your
dealer. Read the information that came with
your battery charger and follow the instructions
on the battery. Avoid using an automobile-type
battery charger, as these can overheat a
motorcycle battery and cause permanent
damage.
Make sure the ignition switch is in the OFF
position before charging the battery.
NOTICE
Improper charging can damage the battery. If
you can’t charge the battery or it appears unable
to hold a charge, contact your dealer.
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Maintenance Fundamentals
Maintenance
44
NOTICE
Jump starting using an automobile battery can
damage your vehicle's electrical system and is
not recommended. Bump starting is also not
recommended.
NOTICE
Installing non-Honda electrical accessories can
overload the electrical system, discharging the
battery and possibly damaging the system.
Fuses
Fuses protect the electrical circuits on your
vehicle. If something electrical on your vehicle
stops working, check for and replace any blown
fuses. 2 P. 82
#
Inspecting and Replacing Fuses
Turn the ignition switch to the OFF position to
remove and inspect fuses. If a fuse is blown,
replace with a fuse of the same rating. For fuse
ratings, see “Specifications.” 2 P. 112
NOTICE
Replacing a fuse with one that has a higher
rating greatly increases the chance of damage to
the electrical system.
If a fuse fails repeatedly, you likely have an
electrical fault. Have your vehicle inspected by
your dealer.
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Maintenance Fundamentals
Maintenance
45
Blown fuse
Engine Oil
Engine oil consumption varies and oil quality
deteriorates according to riding conditions and
time elapsed.
Check the engine oil level regularly, and add the
recommended engine oil if necessary. Dirty oil or
old oil should be changed as soon as possible.
#
Selecting the Engine Oil
For recommended engine oil, see
“Specifications.” 2 P. 111
If you use non-Honda engine oil, check the
label to make sure that the oil satisfies all of the
following standards:
●
JASO T 903 standard
*1
: MA
●
SAE standard
*2
: 10W-30
●
API classification
*3
: SG or higher
*1.
The JASO T 903 standard is an index for engine
oils for 4-stroke motorcycle engines. There are
two classes: MA and MB. For example, the
following label shows the MA classification.
*2.
The SAE standard grades oils by their viscosity.
*3.
The API classification specifies the quality and
performance rating of engine oils. Use SG or
higher oils, excluding oils marked as “Energy
Conserving” or “Resource Conserving” on the
circular API service symbol.
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Maintenance Fundamentals
Maintenance
46
Oil code
Oil classification
Not recommended Recommended
Brake Fluid
Do not add or replace brake fluid, except in an
emergency. Use only fresh brake fluid from a
sealed container. If you do add fluid, have the
brake system serviced by your dealer as soon as
possible.
NOTICE
Brake fluid can damage plastic and painted
surfaces.
Wipe up spills immediately and wash thoroughly.
Recommended brake fluid:
Honda DOT 4 Brake Fluid or equivalent
Drive Chain
The drive chain must be inspected and
lubricated regularly. Inspect the chain more
frequently if you often ride on bad roads, ride at
high speed, or ride with repeated fast
acceleration. 2 P. 66
If the chain does not move smoothly, makes
strange noises, has damaged rollers, has loose
pins, has missing O-rings, or kinks, have the
chain inspected by your dealer.
Also inspect the drive sprocket and driven
sprocket. If either has worn or damaged teeth,
have the sprocket replaced by your dealer.
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Maintenance Fundamentals
Maintenance
47
Continued
Normal
(GOOD)
Worn
(REPLACE)
Damaged
(REPLACE)
NOTICE
Use of a new chain with worn sprockets will cause
rapid chain wear.
#
Cleaning and Lubricating
After inspecting the slack, clean the chain and
sprockets while rotating the rear wheel. Use a
dry cloth with chain cleaner designed
specifically for O-ring chains, or neutral
detergent. Use a soft brush if the chain is dirty.
After cleaning, wipe dry and lubricate with the
recommended lubricant.
Recommended lubricant:
Pro Honda HP Chain Lube or equivalent
Do not use a steam cleaner, a high pressure
cleaner, a wire brush, volatile solvent such as
gasoline and benzene, abrasive cleaner, chain
cleaner or lubricant NOT designed specifically
for O-ring chains as these can damage the
rubber O-ring seals.
Avoid getting lubricant on the brakes or tires.
Avoid applying excess chain lubricant to prevent
spray onto your clothes and the vehicle.
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Maintenance Fundamentals
Maintenance
48
Recommended Coolant
Pro Honda HP Coolant is a pre-mixed solution
of antifreeze and distilled water.
Concentration:
50% antifreeze and 50% distilled water
A concentration of antifreeze below 40% will
not provide proper corrosion and cold
temperature protection.
A concentration of up to 60% will provide better
protection in colder climates.
NOTICE
Using coolant not specified for aluminum
engines or tap/mineral water can cause
corrosion.
Crankcase Breather
Service more frequently when riding in rain, at
full throttle, or after the vehicle is washed or
overturned. Service if the deposit level can be
seen in the transparent section of the drain
tube.
If the drain tube overflows, the air filter may
become contaminated with engine oil causing
poor engine performance.
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Maintenance Fundamentals
Maintenance
49
Tires (Inspecting/Replacing)
#
Checking the Air Pressure
Visually inspect your tires and use an air
pressure gauge to measure the air pressure at
least once a month or any time you think the
tires look low. Always check air pressure when
your tires are cold.
#
Inspecting for Damage
Inspect the tires for
cuts, slits, or cracks that
exposes fabric or
cords, or nails or other
foreign objects
embedded in the side
of the tire or the tread.
Also inspect for any unusual bumps or bulges in
the side walls of the tires.
#
Inspecting for Abnormal Wear
Inspect the tires for
signs of abnormal wear
on the contact surface.
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Maintenance Fundamentals
Maintenance
50
#
Inspecting Tread Depth
Inspect the tread wear indicators. If they
become visible, replace the tires immediately.
For safe riding, you should replace the tires
when the minimum tread depth is reached.
3WARNING
Riding on tires 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 tire inflation and
maintenance.
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Maintenance Fundamentals
Maintenance
51
Continued
Wear indicator
location mark
or TWI
Have your tires replaced by your dealer.
For recommended tires, air pressure and
minimum tread depth, see “Specifications.”
2 P. 111
Follow these guidelines whenever you replace
tires.
● Use the recommended tires or equivalents
of the same size, construction, speed rating,
and load range.
● Have the wheel balanced with Honda
Genuine balance weights or equivalent after
the tire is installed.
●
Do not install a tube inside a tubeless tire on
this vehicle. Excessive heat build-up can
cause the tube to burst.
●
Use only tubeless tires on this vehicle.
The rims are designed for tubeless tires, and
during hard acceleration or braking, a tube-
type tire could slip on the rim and cause the
tire to rapidly deflate.
3WARNING
Installing improper tires on your vehicle
can adversely affect handling and
stability, and can cause a crash in which
you can be seriously hurt or killed.
Always use the size and type of tires
recommended in this owner's manual.
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Maintenance Fundamentals
Maintenance
52
Tire Service Life
The service life of your tires is dependent on
many factors, including, but not limited to,
riding habits, road conditions, vehicle loading,
tire air pressure, maintenance history, speed,
and environmental conditions (even when the
tires are not in use).
In addition to your regular inspections and
maintenance, it is recommended that you have
annual inspections performed once the tires
reach 5 years old. It is also recommended that
all tires be removed from service after 10 years
from the date of manufacture, regardless of
their condition or state of wear.
The last four digits of the TIN (tire identification
number) indicate the date of manufacture.
#
Tire Identification Number (TIN)
The tire identification number (TIN) is a group
of numbers and letters located on the sidewall
of the tire.
a b c
DOT XXXX XXXX 22 09
DOT: This indicates that the tire meets all
requirements of the U.S.
Department of Transportation.
a XXXX:
Factory code
b XXXX:
Tire type code
c 22 09: Date of manufacture (week & year).
Example: week 22 in year 09.
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Maintenance Fundamentals
Maintenance
53
Tire Labeling Example
Tire identification
number (TIN)
Removing & Installing Body Components
Battery
#
Removal
Make sure the ignition switch is in the OFF
position.
1.
Remove the front seat. 2 P. 56
2.
Remove the battery holder by removing
the bolt.
3.
Disconnect the negative - terminal from
the battery.
4.
Disconnect the positive + terminal from
the battery.
5.
Remove the battery taking care not to
drop the terminal nuts.
#
Installation
Install the parts in the reverse order of
removal. Always connect the positive
+
terminal first. Make sure that bolts and nuts
are tight.
Make sure the clock information is correct
after the battery is reconnected. 2 P. 23
For proper handling of the battery, see
“Maintenance Fundamentals.” 2 P. 43
“Battery Goes Dead.” 2 P. 78
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Maintenance
54
Positive
terminal
Battery holder
Negative
terminal
Battery
Bolt
Clip
#
Removal
1.
Press down on the center pin to release
the lock.
2.
Pull the clip out of the hole.
#
Installation
1.
Push the bottom of the center pin.
2.
Insert the clip into the hole.
3.
Press down on the center pin to lock the
clip.
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Removing & Installing Body Components u Clip
Maintenance
55
Center pin
Front Seat
#
Removal
1.
Remove the rear seat. 2 P. 57
2.
Remove the mounting bolts, and then pull
the front seat back and up.
#
Installation
1.
Insert the tab into the recess.
2.
Install and tighten the mounting bolts
securely.
Make sure that the seat is locked securely
in position by pulling it up lightly.
3.
Install the rear seat.
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Removing & Installing Body Components u Front Seat
Maintenance
56
Front seat Mounting bolts
Tab
Recess
Rear Seat
#
Removal
1.
Insert the ignition key into the seat lock.
2.
Turn it clockwise, then pull the rear seat
up and back.
#
Installation
1.
Insert the prongs into the rear stays on
the frame.
2.
Push down on the rear of the rear seat.
Make sure that the seat is locked securely
in position by pulling it up lightly.
The seat locks automatically when closed.
Take care not to lock your key in the
compartment under the rear seat.
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Removing & Installing Body Components u Rear Seat
Maintenance
57
Rear stays
Rear seat
Ignition key
Seat lock
Prongs
Engine Oil
Checking the Engine Oil
1.
If the engine is cold, idle the engine for 3
to 5 minutes.
2.
Turn the ignition switch to the OFF
position and wait for 2 to 3 minutes.
3.
Place your vehicle in an upright position
on a firm, level surface.
4.
Check that the oil level is between the
upper level and lower level marks on the
oil level inspection window.
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Maintenance
58
Oil fill cap
Lower level
Upper level
Oil level inspection
window
Adding Engine Oil
If the engine oil is below or near the lower
level mark, add the recommended engine oil.
2 P. 46, 2 P. 111
1.
Remove the oil fill cap. Add the
recommended oil until it reaches the
upper level mark.
u Place your vehicle in an upright
position on a firm, level surface when
checking the oil level.
u
Do not overfill above the upper level
mark.
u
Make sure no foreign objects enter the
oil filler opening.
u
Wipe up any spills immediately.
2.
Securely reinstall the oil fill cap.
NOTICE
Overfilling with oil or operating with insufficient
oil can cause damage to your engine. Do not mix
different brands and grades of oil. They may
affect lubrication and clutch operation.
For the recommended oil and oil selection
guidelines, see “Maintenance Fundamentals.”
2 P. 46
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Engine Oil u Adding Engine Oil
Maintenance
59
Coolant
Checking the Coolant
Check the coolant level in the reserve tank
while the engine is cold.
1.
Place your vehicle on a firm, level surface.
2.
Hold your vehicle in an upright position.
3.
Check that the coolant level is between
the UPPER level and LOWER level marks
on the reserve tank.
If the coolant level is dropping noticeably or
the reserve tank is empty, you likely have a
serious leak. Have your vehicle inspected by
your dealer.
Adding Coolant
If the coolant level is below the LOWER level
mark, add the recommended coolant
(2 P. 49) until the level reaches the UPPER
level mark.
Add fluid only from the reserve tank cap and
do not remove the radiator cap.
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Maintenance
60
UPPER level
LOWER level
Reserve tank
1.
Remove the screw.
2.
Pull out the prong from the hole and
remove the reserve tank cover.
3.
Remove the reserve tank cap and add
fluid while monitoring the coolant level.
u Do not overfill above the UPPER level
mark.
u Make sure no foreign objects enter the
reserve tank opening.
4.
Securely reinstall the reserve tank cap.
5.
Install the reserve tank cover and tighten
the screw.
3WARNING
Removing the radiator cap while the
engine is hot can cause the coolant to
spray out, potentially scalding you.
Always let the engine and radiator cool
down before removing the radiator cap.
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Coolant u Adding Coolant
Maintenance
61
Reserve tank cap
Reserve tank cover
Screw
Prong Hole
LWR
LWR
Brakes
Checking Brake Fluid
1.
Place your vehicle in an upright position
on a firm, level surface.
2.
Check that the brake fluid reservoir is
horizontal and that the fluid level is:
Front
above the LWR mark.
Rear
between the LOWER level and
UPPER level marks.
If the brake fluid level in either reservoir is
below the LWR mark or LOWER level mark or
the brake lever and pedal freeplay becomes
excessive, inspect the brake pads for wear.
If the brake pads are not worn, you most
likely have a leak. Have your vehicle
inspected by your dealer.
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Maintenance
62
Front brake fluid reservoir
LWR mark
UPPER level mark
LOWER level mark
Rear brake fluid reservoir
Front Rear
Inspecting the Brake Pads
Check the condition of the brake pad wear
indicators.
The pads need to be replaced if a brake pad
is worn to the indicator.
1.
Front
Inspect the brake pads from below
the brake caliper.
2.
Rear
Inspect the brake pads from the rear
right of the vehicle.
If necessary have the pads replaced by your
dealer.
Always replace both left and right brake pads
at the same time.
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Brakes u Inspecting the Brake Pads
Maintenance
63
Front
Rear
Brake pads
Wear
indicator
Disc
Wear
indicator
Brake pads
Wear
indicator
Disc
CBR300R
CBR300RA
Wear
indicator
Brake pads
Wear
indicator
Wear
indicator
Disc
Adjusting the Brake Light
Switch
Check the operation of the brake light switch.
Hold the brake light switch and turn the
adjusting nut in the direction A if the switch
operates too late, or turn the nut in the
direction B if the switch operates too soon.
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Brakes u Adjusting the Brake Light Switch
Maintenance
64
Brake light switch
Adjusting nut
B
A
Side Stand
Checking the Side Stand
1.
Check that the side stand operates
smoothly. If the side stand is stiff or
squeaky, clean the pivot area and
lubricate the pivot bolt with clean grease.
2.
Check the spring for damage or loss of
tension.
3.
Sit on the vehicle, shift the transmission to
Neutral, and raise the side stand.
4.
Start the engine, pull the clutch lever in,
and shift the transmission into gear.
5.
Lower the side stand all the way. The
engine should stop as you lower the side
stand. If the engine doesn't stop, have
your vehicle inspected by your dealer.
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Maintenance
65
Side stand spring
Drive Chain
Inspecting the Drive Chain
Slack
Check the drive chain slack at several points
along the chain. If the slack is not constant at
all points, some links may be kinked and
binding.
Have the chain inspected by your dealer.
1.
Shift the transmission to Neutral. Stop the
engine.
2.
Place your vehicle on its side stand on a
firm, level surface.
3.
Check the slack in the lower half of the
drive chain midway between the
sprockets.
Drive chain slack:
13/16 - 1 3/16 in (20 - 30 mm)
u Do not ride your vehicle if the slack
exceeds 1 15/16 in (50 mm).
4.
Roll the vehicle forward and check that
the chain moves smoothly.
5.
Inspect the sprockets. 2 P. 47
6.
Clean and lubricate the drive chain.
2 P. 48
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Maintenance
66
Clutch
Checking the Clutch
#
Checking the Clutch Lever Freeplay
Check the clutch lever freeplay.
Freeplay at the clutch lever:
3/8 - 13/16 in (10 - 20 mm)
Check the clutch cable for kinks or signs of
wear. If necessary have it replaced by your
dealer.
Lubricate the clutch cable with a
commercially available cable lubricant to
prevent premature wear and corrosion.
NOTICE
Improper freeplay adjustment can cause
premature clutch wear.
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Maintenance
67
Freeplay
Clutch lever
Adjusting the Clutch Lever
Freeplay
#
Upper Adjustment
Attempt adjustment with the upper clutch
cable adjuster first.
1.
Pull back the rubber dust cover.
2.
Loosen the upper lock nut.
3.
Turn the upper clutch cable adjuster until
the freeplay is 3/8 - 13/16 in (10 - 20 mm).
4.
Tighten the upper lock nut and check the
freeplay again.
5.
Install the rubber dust cover.
#
Lower Adjustment
If the upper clutch cable adjuster is threaded
out near its limit, or the correct freeplay
cannot be obtained, attempt adjustment with
the lower clutch cable adjusting nut.
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Clutch u Adjusting the Clutch Lever Freeplay
Maintenance
68
Upper clutch cable adjuster
Upper lock nut
Rubber dust cover
–
+
1.
Loosen the upper lock nut and turn the
upper clutch cable adjuster all the way in
(to provide maximum freeplay). Tighten
the upper lock nut.
2.
Loosen the lower lock nut.
3.
Turn the lower adjusting nut until the
clutch lever freeplay is 3/8 - 13/16 in (10 -
20 mm).
4.
Tighten the lower lock nut and check the
clutch lever freeplay.
5.
Start the engine, pull the clutch lever in,
and shift into gear. Make sure the engine
does not stall and the vehicle does not
creep. Gradually release the clutch lever
and open the throttle. Your vehicle should
move smoothly and accelerate gradually.
If proper adjustment cannot be obtained or
the clutch does not work correctly, see your
dealer.
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Clutch u Adjusting the Clutch Lever Freeplay
Maintenance
69
Lower adjusting nut
Lower lock nut
+
–
Throttle
Checking the Throttle
With the engine off, check that the throttle
rotates smoothly from fully closed to fully
open in all steering positions and throttle
freeplay is correct. If the throttle does not
move smoothly, close automatically, or if the
cable is damaged, have the vehicle inspected
by your dealer.
Freeplay at the throttle grip flange:
1/16 - 1/4 in (2 - 6 mm)
Adjusting the Throttle Freeplay
1.
Slide the cable boot.
2.
Loosen the lock nut.
3.
Turn the adjuster until the freeplay is 1/16
- 1/4 in (2 - 6 mm).
4.
Tighten the lock nut, return the cable
boot, and inspect the throttle action
again.
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Maintenance
70
Freeplay
Flange
Throttle grip
Lock nut
Adjuster
Cable boot
–
+
Other Adjustments
Adjusting the Rear Suspension
Adjusting the suspension requires a pin
spanner. We recommend that you have your
vehicle serviced by your dealer.
#
Spring Preload
You can adjust the spring preload by the
adjuster to suit the load or the road surface.
Use a pin spanner and extension bar to turn
the adjuster. Position 1 is for a decrease
spring preload (soft), or turn the position 3 to
5 increase spring preload (hard). The
standard position is 2.
NOTICE
Attempting to adjust directly from 1 to 5 or 5 to 1
may damage the shock absorber.
NOTICE
Do not turn the adjuster beyond its limits.
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Maintenance
71
Extension bar
Adjuster
Pin spanner
1 2 3 4 5
Engine Will Not Start........................................ P. 73
Overheating (Segment H flashes in coolant
temperature gauge) ....................................... P. 74
Warning Indicators On or Flashing...............P. 75
PGM-FI (Programmed Fuel Injection)
Malfunction Indicator Lamp (MIL).................P. 75
ABS (Anti-lock Brake System) Indicator ......... P. 75
Other Warning Indications.............................. P. 76
Fuel Gauge Failure Indication...........................P. 76
Coolant Temperature Gauge Failure
Indication............................................................. P. 76
Tire Puncture ...................................................... P. 77
Electrical Trouble............................................... P. 78
Battery Goes Dead ..............................................P. 78
Burned-out Light Bulb........................................ P. 78
Blown Fuse ............................................................ P. 82
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Troubleshooting
Engine Will Not Start
Starter Motor Operates But
Engine Does Not Start
Check the following items:
● Check the correct engine starting
sequence. 2 P. 29
●
Check that there is gasoline in the fuel
tank.
● Check if the PGM-FI malfunction indicator
lamp (MIL) is on.
u If the indicator lamp is on, contact
your dealer as soon as possible.
Starter Motor Does Not
Operate
Check the following items:
● Check the correct engine starting
sequence. 2 P. 29
●
Make sure engine stop switch is in the
(Run) position. 2 P. 26
● Check for a blown fuse. 2 P. 82
●
Check for a loose battery connection
(2 P. 54) or battery terminal corrosion
(2 P. 43).
● Check the condition of the battery.
2 P. 78
If the problem continues, have your vehicle
inspected by your dealer.
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Troubleshooting
73
Overheating (Segment H flashes in coolant temperature gauge)
The engine is overheating when the following
occurs:
● The segment H flashes in the coolant
temperature gauge.
● Acceleration becomes sluggish.
If this occurs, pull safely to the side of the
road and perform the following procedure.
Extended fast idling may cause the segment
H to flash.
NOTICE
Continuing to ride with an overheated engine
can cause serious damage to the engine.
1.
Stop the engine using the ignition switch,
and then turn the ignition switch to the
ON position.
2.
Check that the radiator fan is operating,
and then turn the ignition switch to the
OFF position.
If the fan is not operating:
Suspect a fault. Do not start the engine.
Transport your vehicle to your dealer.
If the fan is operating:
Allow the engine to cool with the ignition
switch in the OFF position.
3.
After the engine has cooled, inspect the
radiator hose and check if there is a leak.
2 P. 60
If there is a leak:
Do not start the engine. Transport your
vehicle to your dealer.
4.
Check the coolant level in the reserve
tank. 2 P. 60
u Add coolant as necessary.
5.
If 1-4 check normal, you may continue
riding, but closely monitor the
temperature gauge.
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Troubleshooting
74
Warning Indicators On or Flashing
PGM-FI (Programmed Fuel
Injection) Malfunction
Indicator Lamp (MIL)
If the indicator comes on while riding, you
may have a serious problem with the PGM-FI
system. Reduce speed and have your vehicle
inspected by your dealer as soon as possible.
ABS (Anti-lock Brake System)
Indicator
CBR300RA
If the indicator operates in one of the
following ways, you may have a serious
problem with the ABS. Reduce your speed
and have your vehicle inspected by your
dealer as soon as possible.
● Indicator comes on or starts flashing while
riding.
● Indicator does not come on when the
ignition switch is in the ON position.
●
Indicator does not go off at speeds above
6 mph (10 km/h).
If the ABS indicator stays on, your brakes will
continue to work as a conventional system,
but without the anti-locking function.
The ABS indicator may flash if you turn the
rear wheel while the rear wheel is lifted off
the ground. In this case, turn the ignition
switch to the OFF position, and then to the
ON position again. The ABS indicator will go
off after your speed reaches 19 mph (30
km/h).
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Troubleshooting
75
Other Warning Indications
Fuel Gauge Failure Indication
If the fuel system has an error, all segments
will blink or go off as shown in the illustration.
If this occurs, see your dealer as soon as
possible.
Coolant Temperature Gauge
Failure Indication
If the cooling system has an error, all
segments will blink or go off as shown in the
illustration.
If this occurs, see your dealer as soon as
possible.
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Troubleshooting
76
Tire Puncture
Repairing a puncture or removing a wheel
requires special tools and technical expertise.
We recommend you have this type of service
performed by your dealer.
After an emergency repair, always have the
tire inspected/replaced by your dealer.
Emergency Repair Using a Tire
Repair Kit
If your tire has a minor puncture, you can
make an emergency repair using a tubeless
tire repair kit.
Follow the instructions provided with the
emergency tire repair kit.
Riding your vehicle with a temporary tire
repair is very risky. Do not exceed 30 mph
(50 km/h). Have the tire replaced by your
dealer as soon as possible.
3WARNING
Riding your vehicle with a temporary
tire repair can be risky. If the temporary
repair fails, you can crash and be
seriously injured or killed.
If you must ride with a temporary tire
repair, ride slowly and carefully and do
not exceed 30 mph (50 km/h) until the
tire is replaced.
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Troubleshooting
77
Electrical Trouble
Battery Goes Dead
Charge the battery using a motorcycle
battery charger.
Remove the battery from the vehicle before
charging.
Do not use an automobile-type battery
charger, as these can overheat a motorcycle
battery and cause permanent damage. If the
battery does not recover after recharging,
contact your dealer.
NOTICE
Jump starting using an automobile battery can
damage your vehicle's electrical system and is
not recommended.
Bump starting is also not recommended.
Burned-out Light Bulb
Follow the procedure below to replace a
burned-out light bulb.
Turn the ignition switch to the OFF or LOCK
position.
Allow the bulb to cool before replacing it.
Do not use bulbs other than those specified.
Check the replacement bulb for correct
operation before riding.
For the light bulb wattage, see
“Specifications.” 2 P. 112
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Troubleshooting
78
#
Headlight Bulb
The right and left headlight bulbs
replacement can be done in the same way.
1.
Pull off the connector while pushing the
knob.
2.
Remove the dust cover.
3.
Press the pin down and pull out the bulb
assembly without turning it.
4.
Carefully pull out the bulb from the
adaptor.
5.
Install a new bulb and parts in the reverse
order of removal.
u
Assemble the bulb and adaptor with
the bulb tab upward and the adaptor
prong left downward.
Do not touch the glass surface with your
fingers. If you touch the bulb with your bare
hands, clean it with a cloth moistened with
isopropyl (rubbing) alcohol.
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Electrical Trouble u Burned-out Light Bulb
Troubleshooting
79
Continued
Pin
Bulb
Tab
Prong Adaptor
Dust
cover
Connector
Knob
#
Brake Light/Taillight Bulb
1.
Remove the rear seat. 2 P. 57
2.
Turn the socket counterclockwise, and
remove it.
3.
Slightly press the bulb in and turn it
counterclockwise.
4.
Install a new bulb and parts in the reverse
order of removal.
5.
Install the rear seat.
#
Front/Rear Turn Signal Bulb
1.
Remove the screw A and screw B.
2.
Remove the turn signal lens and lens
packing.
3.
Slightly press the bulb and turn it
counterclockwise.
4.
Install a new bulb in the reverse order of
removal.
u
Use only the amber bulb.
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Electrical Trouble u Burned-out Light Bulb
Troubleshooting
80
Bulb
Socket
Lens packing Screw A
Screw B
Turn signal lens Bulb
#
License Plate Light Bulb
1.
Remove the screws.
2.
Remove the license light cover and license
light cover packing.
3.
Pull out the bulb without turning.
4.
Install a new bulb in the reverse order of
removal.
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Electrical Trouble u Burned-out Light Bulb
Troubleshooting
81
License light cover
Bulb Cover
packing
Screws
Blown Fuse
Before handling fuses, see “Inspecting and
Replacing Fuses.” 2 P. 45
#
Fuse Box Fuses
1.
Remove the front seat. 2 P. 56
2.
Open the fuse box cover.
3.
Pull out the fuses one by one to check for
a blown fuse. Always replace a blown fuse
with a spare of the same rating.
4.
Close the fuse box cover.
5.
Reinstall parts in the reverse order of
removal.
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Electrical Trouble u Blown Fuse
Troubleshooting
82
Fuse box cover
Spare fuses
Fuse box cover
CBR300RA CBR300R
Spare fuses
#
Main Fuse
1.
Remove the front seat. 2 P. 56
2.
Disconnect the wire connector of the
starter magnetic switch.
3.
Pull the main fuse out and check for a
blown fuse. Always replace a blown fuse
with a spare of the same rating.
u Spare main fuse is provided in the
starter magnetic switch.
4.
Reinstall parts in the reverse order of
removal.
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Electrical Trouble u Blown Fuse
Troubleshooting
83
Continued
Wire connector
Main fuse
Spare
main fuse
#
ABS Fuse
CBR300RA
1.
Remove the front seat. 2 P. 56
2.
Open the ABS fuse box cover.
3.
Pull the fuse out and check for a blown
fuse. Always replace a blown fuse with a
spare of the same rating.
4.
Close the ABS fuse box cover.
5.
Reinstall parts in the reverse order of
removal.
NOTICE
If a fuse fails repeatedly, you likely have an
electrical problem. Have your vehicle inspected
by your dealer.
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Electrical Trouble u Blown Fuse
Troubleshooting
84
Spare fuse
ABS fuse
box cover
Keys.......................................................................P. 86
Instruments, Controls, & Other Features..... P. 87
Caring for Your Vehicle.................................... P. 88
Storing Your Vehicle.........................................P. 92
Transporting Your Vehicle ..............................P. 93
You & the Environment.................................... P. 94
Vehicle Identification Number.......................P. 95
Emission Control Systems ............................... P. 96
Catalytic Converter ......................................... P. 101
Oxygenated Fuels............................................P. 102
Authorized Manuals ....................................... P. 103
Warranty Coverage and Service .................. P. 104
Honda Contacts ............................................... P. 107
Reporting Safety Defects ..............................P. 109
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Information
Keys
Ignition Key
Be sure to record the key number provided with
the key number plate. Store the spare key and
key number in a safe location.
To make a duplicate, take the spare key or the
key number to your dealer.
If you lose all ignition keys and the key number,
the ignition switch assembly will probably have
to be removed by your dealer to determine the
key number.
A metal key holder may cause damage to the
area surrounding the ignition switch.
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Keys
Information
86
Instruments, Controls, &
Other Features
Ignition Switch
Leaving the ignition switch in the ON position
with the engine stopped will drain the battery.
Do not turn the key while riding.
Engine Stop Switch
Do not use the engine stop switch except in an
emergency. Doing so when riding will cause the
engine to suddenly turn off, making riding
unsafe.
If you stop the engine using the engine stop
switch, turn the ignition switch to the OFF
position. Failing to do so will drain the battery.
Odometer
The display locks at 999,999 when the read-out
exceeds 999,999.
Tripmeter
The tripmeter returns to 0.0 when the read-out
exceeds 999.9.
Document Bag
The owner’s manual, registration, and insurance
information can be stored in the plastic
document bag located under the rear seat.
2 P. 57
Ignition Cut-off System
A banking (lean angle) sensor automatically
stops the engine and fuel pump if the vehicle
falls over. To reset the sensor, you must turn the
ignition switch to the OFF position and back to
the ON position before the engine can be
restarted.
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Instruments, Controls, & Other Features
Information
87
Caring for Your Vehicle
Frequent cleaning and polishing is important to
ensure the life of your Honda. A clean vehicle
makes it easier to spot potential problems.
In particular, seawater and salts used to prevent
ice on roads promote the formation of
corrosion. Always wash your vehicle thoroughly
after riding on coastal or treated roads.
Washing
Allow the engine, muffler, brakes, and other
high-temperature parts to cool before washing.
1.
Rinse your vehicle thoroughly using a low
pressure garden hose to remove loose dirt.
2.
If necessary, use a sponge or a soft towel
with mild cleaner to remove road grime.
u Clean the windscreen, headlight lens,
panels, and other plastic components
with extra care to avoid scratching them.
Avoid directing water into the air cleaner,
muffler, and electrical parts.
3.
Thoroughly rinse your vehicle with plenty of
clean water and dry with a soft, clean cloth.
4.
After the vehicle dries, lubricate any moving
parts.
u Make sure that no lubricant spills onto
the brakes or tires. Brake discs, pads,
drum or shoes contaminated with oil will
suffer greatly reduced braking
effectiveness and can lead to a crash.
5.
Lubricate the drive chain immediately after
washing and drying the vehicle.
6.
Apply a coat of wax to prevent corrosion.
u Avoid products that contain harsh
detergents or chemical solvents. These
can damage the metal, paint, and plastic
on your vehicle.
Keep the wax clear of the tires and brakes.
u If your vehicle has any matte painted
parts, do not apply a coat of wax to the
matte painted surface.
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Caring for Your Vehicle
Information
88
#
Washing Precautions
Follow these guidelines when washing:
● Do not use high-pressure washers:
u High-pressure water cleaners can
damage moving parts and electrical
parts, rendering them inoperable.
u Water in the air intake can be drawn into
the throttle body and/or enter the air
cleaner.
● Do not direct water at the muffler:
u Water in the muffler can prevent starting
and causes rust in the muffler.
● Dry the brakes:
u Water adversely affects braking
effectiveness. After washing, apply the
brakes intermittently at low speed to
help dry them.
● Do not direct water under the seat:
u Water in the under seat compartment
can damage your documents and other
belongings.
● Do not direct water at the air cleaner:
u Water in the air cleaner can prevent the
engine from starting.
● Do not direct water near the headlight:
u The headlight's inside lens may fog
temporarily after washing or while riding
in the rain. This does not impact the
headlight function.
u
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.
●
Do not use wax or polishing compounds on
matte painted surface:
u Use a soft cloth or sponge, plenty of
water, and a mild detergent to clean
matte painted surfaces. Dry with a soft
clean cloth.
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Caring for Your Vehicle
Information
89
Continued
Aluminum Components
Aluminum will corrode from contact with dirt,
mud, or road salt. Clean aluminum parts
regularly and follow these guidelines to avoid
scratches:
● Do not use stiff brushes, steel wool, or
cleaners containing abrasives.
● Avoid riding over or scraping against curbs.
Panels
Follow these guidelines to prevent scratches
and blemishes:
● Wash gently using a soft sponge and plenty
of water.
● To remove stubborn stains, use diluted
detergent and rinse thoroughly with plenty
of water.
● Avoid getting gasoline, brake fluid, or
detergents on the instruments, panels, or
headlight.
Windscreen
Using plenty of water, clean the windscreen with
a soft cloth or sponge. (Avoid using detergents
or any kind of chemical cleaner on the
windscreen.) Dry with a soft, clean cloth.
NOTICE
To avoid possible scratching or other damage,
use only water and a soft cloth or sponge to
clean the windscreen.
For a dirtier windscreen, use a diluted neutral
detergent with a sponge and plenty of water.
Make sure to wash off all the detergent.
(Detergent residue may cause windscreen
cracks.)
Replace the windscreen if scratches cannot be
removed and they obstruct clear vision.
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Caring for Your Vehicle
Information
90
Take care to keep battery electrolyte, brake
fluid, or other chemical solvents off the
windscreen and screen garnish. They will
damage the plastic.
Exhaust Pipe and Muffler
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.
When the exhaust pipe and muffler are painted,
do not use a commercially available abrasive
kitchen cleaning compound. Use a neutral
detergent to clean the painted surface on the
exhaust pipe and muffler. If you are not sure if
your exhaust pipe and muffler are painted,
contact your dealer.
NOTICE
Even though the exhaust is made of stainless
steel, it can become stained. Remove all marks
and blemishes as soon as they are noticed.
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Caring for Your Vehicle
Information
91
Storing Your Vehicle
If you store your vehicle outdoors, you should
consider using a full-body cover.
If you won't be riding for an extended period,
follow these guidelines:
● Wash your vehicle and wax all painted
surfaces (except matte painted surfaces).
Coat chrome pieces with rust-inhibiting oil.
● Lubricate the drive chain. 2 P. 47
● Place your vehicle on a maintenance stand
and position a block so that both tyres are
off the ground.
●
After rain, remove the body cover and allow
the vehicle to dry.
●
Remove the battery (2 P. 54) to prevent
discharge. Fully charge the battery and then
place it in a shaded, well-ventilated area.
u If you leave the battery in place,
disconnect the negative - terminal to
prevent discharge.
After removing your vehicle from storage,
inspect all maintenance items required by the
Maintenance Schedule.
For more information about storage, refer to
the Honda Winter Storage Guide, available from
your dealer.
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Storing Your Vehicle
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92
Transporting Your Vehicle
If your vehicle needs to be transported, it
should be carried on a motorcycle trailer or a
flatbed truck or trailer that has a loading ramp
or lifting platform, and motorcycle tie-down
straps. Never try to tow your vehicle with a
wheel or wheels on the ground.
NOTICE
Towing your vehicle with a wheel or wheels on
the ground can cause serious damage to the
transmission.
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93
You & the Environment
Owning and riding a vehicle can be enjoyable,
but you must do your part to protect the
environment.
Choose Sensible Cleaners
Use a biodegradable detergent when you wash
your vehicle. Avoid aerosol spray cleaners that
contain chlorofluorocarbons (CFCs) which
damage the atmosphere's protective ozone
layer.
Recycle Wastes
Put oil and other toxic wastes in approved
containers and take them to a recycling center.
Call your local or state office of public works or
environmental services to find a recycling center
in your area, and to get instructions on how to
dispose of non-recyclable wastes. Do not place
used engine oil in the trash, or pour it down a
drain or on the ground. Used oil, gasoline,
coolant, and cleaning solvents contain poisons
that can hurt refuse workers and contaminate
drinking water, lakes, rivers, and oceans.
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You & the Environment
Information
94
Continued
Vehicle Identification
Number
The VIN and engine serial number uniquely
identify your vehicle and are required in order
to register your vehicle. They may also be
required when ordering replacement parts.
You should record these numbers and keep
them in a safe place.
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Vehicle Identification Number
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95
VIN
VIN
Emission Control Systems
Your vehicle engine emits combustion
byproducts, including carbon monoxide (CO),
oxides of nitrogen (NOx), and hydrocarbons
(HC). Gasoline evaporation also emits
hydrocarbons. Controlling the production of
NOx, CO, and HC is important for the
environment.
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96
Engine number
Continued
Exhaust Emission Requirements
The U.S. Environmental Protection Agency (EPA)
and the California Air Resources Board (CARB)
require that your vehicle comply with applicable
exhaust, crankcase, and fuel permeation
emission standards during its useful life, when
operated and maintained according to the
instructions provided.
CARB also requires that your vehicle comply
with applicable evaporative emission
requirements during its useful life, when
operated and maintained according to the
instructions provided.
Compliance with the terms of the Distributor's
Warranties for Honda Motorcycle Emission
Control Systems is necessary in order to
maintain a valid emissions system warranty.
The Vehicle Emission Control Information label
is located under the rear seat. 2 P. 57
Noise Emission Requirements
The EPA requires that vehicles built after
January 1, 1983 comply with applicable noise
emission standards for one year or 3,730 miles
(6,000 km) after the time of purchase when
operated and maintained according to the
instructions provided.
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97
Vehicle emission control information label
Exhaust Emission Control System
The exhaust emission control system includes
the following components that should not need
adjustment, although periodic inspection by
your dealer is recommended.
#
PGM-FI System
The PGM-FI (programmed fuel injection) system
uses sequential multiport fuel injection, and is
comprised of air intake, engine control, fuel
control, and exhaust control subsystems. The
engine control module (ECM) uses sensors to
determine how much air enters the engine, and
then controls how much fuel to inject.
#
Ignition Timing Control System
The ignition timing control system adjusts the
ignition timing to reduce the amount of HC,
CO, and NOx produced.
#
Secondary Air Injection System
The secondary air injection system adds filtered
air into the exhaust gas to help improve
emission control performance.
#
Catalytic Converters
The exhaust system contains one or more
catalytic converters. Catalytic converters use a
catalyst to convert most of the harmful exhaust
gas compounds into harmless compounds.
Evaporative Emission Control System
50 STATE (meets California)
An evaporative emissions control system uses a
canister filled with charcoal to adsorb fuel vapor
from the fuel tank while the engine is off. The
vapor is drawn into the engine and burned
while riding.
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98
Continued
Crankcase Emissions Control System
The engine is equipped with a closed crankcase
system to prevent discharging crankcase
emissions into the atmosphere.
Blow-by gas is returned to the combustion
chamber through the air cleaner housing and
throttle body.
Fuel Permeation Emission Control
The fuel tank, fuel hoses, and fuel vapor charge
hoses use fuel permeation control technologies
to prevent fuel vapor emissions. Tampering with
these components to reduce or defeat the
effectiveness of the fuel permeation
technologies is prohibited.
Noise Emission Control System
#
TAMPERING WITH THE NOISE CONTROL
SYSTEM IS PROHIBITED:
U. S. federal law prohibits the following acts or
the causing thereof: (1) The removal or
rendering inoperative by any person, other than
for purposes of maintenance, repair or
replacement, of any device or element of
design incorporated into any new vehicle for
the purpose of noise control prior to its sale or
delivery to the ultimate purchaser or while it is
in use; or (2) the use of the vehicle after such
device or element of design has been removed
or rendered inoperative by any person.
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Emission Control Systems
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99
#
AMONG THOSE ACTS PRESUMED TO
CONSTITUTE TAMPERING ARE THE
FOLLOWING ACTS:
● Removal of, or puncturing the muffler,
baffles, header pipes or any other
component which conducts exhaust gases.
● Removal of, or puncturing of any part of the
intake system.
● Lack of proper maintenance.
● Removing or disabling any emissions
compliance component, or replacing any
compliance component with a noncompliant
component.
Problems Affecting Vehicle Exhaust
Emissions
Have your vehicle inspected and repaired by
your dealer if you experience any of the
following symptoms:
● Hard starting or stalling after starting
● Rough idling
● Misfiring or backfiring during acceleration
● Poor engine performance and poor fuel
economy
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100
Catalytic Converter
This vehicle is equipped with a three-way
catalytic converter. The catalytic converter
contains precious metals that serve as catalysts
in high temperature chemical reactions that
convert hydrocarbons (HC), carbon monoxide
(CO), and oxides of nitrogen (NOx) in the
exhaust gasses into safe compounds.
A defective catalytic converter contributes to air
pollution and can impair your engine's
performance. A replacement unit must be an
original Honda part or equivalent.
Follow these guidelines to protect your vehicle's
catalytic converter.
● Always use unleaded gasoline. Leaded
gasoline will damage the catalytic converter.
● Keep the engine in good running condition.
A poorly running engine can cause the
catalytic converter to overheat causing
damage to the converter or the vehicle.
● If your engine is misfiring, backfiring, stalling,
or otherwise not running properly, stop
riding and turn off the engine. Have your
vehicle serviced as soon as possible.
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Catalytic Converter
Information
101
Oxygenated Fuels
Some conventional fuels blended with alcohol
or an ether compound are available in some
locales to help reduce emissions to meet clean
air standards. These gasolines are collectively
referred to as oxygenated fuels. If you plan to
use oxygenated fuel, check that it is unleaded
and meets the minimum octane rating and
blend requirement.
The following fuel blends have been approved
for use in your vehicle:
●
Ethanol (ethyl alcohol) up to 10% by volume.
u Gasoline containing ethanol may be
marketed under the name Gasohol.
●
Do not use gasoline containing methanol
(methyl alcohol).
If you accidentally fill your fuel tank with an
oxygenated fuel containing higher percentages,
you may experience performance problems. To
resolve the problem, have your dealer drain the
fuel tank and replace with the correct fuel. Fuel
system or performance problems resulting from
the use of an oxygenated fuel containing higher
percentages are not covered by your warranty.
NOTICE
Improper use of oxygenated fuels can damage
metal, rubber, and plastic parts of your fuel
system.
Oxygenated fuel can also damage paint.
Damage caused by spilled fuel is not covered by
warranty.
If you notice any undesirable operating
symptoms or performance problems, try a
different brand of gasoline.
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102
Description
2021 CBR300R/RA CB300F/FA Service Manual
Common Service Manual (61CSM00)
Winter Storage Guide (S9507)
2021 CBR300R/RA Owner’s Manual
Authorized Manuals
The Service Manual used by your authorized
dealer is available from your Honda dealer or
Helm, Inc.
Also available, but not necessary to service your
model, is the Honda Common Service Manual,
which explains basic service information for
various systems on Honda motorcycles,
scooters, ATV, and SxS.
The Winter Storage Guide in conjunction with
the Owner's Manual and Service Manual can
help you prepare your Honda motorcycle,
scooter, ATV, and SxS for winter storage.
These Honda manuals are written for the
professional technician. However, if you possess
the proper tools, observe the safety standards,
and are mechanically capable, you should find
them easy to use.
Special Honda tools are necessary for some
procedures.
Order online: www.helminc.com
Order Toll Free: 1-888-CYCLE93
(1-888-292-5393)
(NOTE: For Credit Card Orders Only)
Monday - Friday 8:00 AM - 6:00 PM EST
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Authorized Manuals
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103
Warranty Coverage and
Service
Coverage
Your new Honda is covered by the following
warranties:
● Vehicle Limited Warranty
● Emission Control System Warranty
● Noise Control Warranty
The responsibilities, restrictions, and exclusions
that apply to these warranties are explained in
the Warranties Booklet given to you by your
Honda dealer at the time of purchase. Always
keep your Honda owner's card with your
Warranties Booklet.
It is important to realize that your warranty
applies only to defects in material or
workmanship of your Honda. Your warranty
coverage does not apply to the normal wear
and deterioration associated with use of the
vehicle.
Your warranty coverage is not voided if you
perform your own maintenance. However,
failures that occur due directly to improper
maintenance are not covered by these
warranties.
You can extend almost all of your warranty
coverage through the Honda Protection Plan.
For more information, see your Honda dealer.
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104
Statement on Warranty Coverage for
Aftermarket and Recycled Parts
New Jersey
The Magnuson-Moss Warranty Act, 15 U.S.C. s.
2301 et seq., makes it illegal for motor vehicle
manufacturers to void a motor vehicle warranty
or deny warranty coverage solely because an
aftermarket or recycled part has been used to
repair the vehicle or someone other than the
authorized service provider performed service
on the vehicle. This provision does not apply to
a new motor vehicle purchased solely for
commercial or industrial use.
Under federal law, a manufacturer may deny
warranty coverage and charge for repairs to a
vehicle if it is discovered that an aftermarket or
recycled part installed on the vehicle is defective
or was installed incorrectly and caused damage
to another part of the vehicle otherwise covered
under warranty. The Federal Trade Commission
requires that a manufacturer demonstrate that
an aftermarket or recycled part or service
performed by a person other than an
authorized service provider caused damage to
another part of the vehicle otherwise covered
under warranty before denying warranty
coverage. Additionally, federal law allows a
manufacturer to void a motor vehicle warranty
or deny warranty coverage if the manufacturer
provides the article or service to consumers free
of charge under the warranty or the
manufacturer has secured a waiver from the
Federal Trade Commission.
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105
Continued
Service
Please remember that maintenance
recommended in the Maintenance Schedule is
not included in your warranty coverage.
If you believe you have a problem with your
vehicle, call the service department of your
Honda dealer. Make an appointment for an
inspection and diagnosis. You will be asked to
authorize that inspection, and your dealer will
return the results of the inspection. If a problem
exists and is covered under warranty, your dealer
will perform the warranty repairs. If you have any
questions about your warranty coverage or the
nature of the repair, talk to the Service Manager
of your Honda dealer.
If a misunderstanding occurs and you aren't
satisfied with your dealer's handling of the
situation, we suggest you discuss your problem
with the appropriate member of the dealership's
management team. If you are still not satisfied,
contact the owner of the dealership or their
designated representative.
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106
Honda Contacts
American Honda Motor Co., Inc.
If you wish to contact Honda directly to
comment on your experiences with your vehicle
or with your dealer, please send your comments
to the following address:
Powersports Customer Relations
American Honda Motor Co., Inc.,
P.O. Box 2200, Torrance,
CA 90509-2200
Mailstop: 100-4W-5F,
Telephone: (866) 784-1870
Website: https://powersports.honda.com/
contact-us
Please include the following information in your
letter:
● Name, address, and telephone number
● Product model, year, and VIN
● Date of purchase
● Dealer name and address
We will likely ask your Honda dealer to respond,
or possibly acknowledge your comments
directly.
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107
Continued
Your Honda Dealer
The service department of your Honda dealer
offers trained personnel to perform regular
maintenance and unexpected repairs. It has the
latest available service information from Honda
and also handles warranty inspections and
repairs.
The parts department offers Honda Genuine
Parts, Pro Honda products and Honda Genuine
Accessories that provide the same quality that
went into your vehicle.
The sales department offers the Honda
Protection Plan to extend almost all of your
warranty coverage.
Your Honda dealer can also supply information
about, riding events, and information about
safety training available in your local area.
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108
Reporting Safety Defects
If you believe that your vehicle has a defect
which could cause a crash or could cause
injury or death, you should immediately
inform the National Highway Traffic Safety
Administration (NHTSA) in addition to
notifying American Honda Motor Co., Inc.
If NHTSA receives similar complaints, it may
open an investigation, and if it finds that a
safety defect exists in a group of vehicles, it
may order a recall and remedy campaign.
However, NHTSA cannot become involved
in individual problems between you, your
dealer, or American Honda Motor Co., Inc.
To contact NHTSA, you may call the Vehicle
Safety Hotline toll-free at:
1-888-327-4236
(TTY: 1-800-424-9153); go to
http://www.safercar.gov;
or write to:
Administrator, NHTSA,
1200 New Jersey Avenue, SE.,
Washington, DC 20590.
You can also obtain other information
about motor vehicle safety from:
http://www.safercar.gov.
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109
Specifications
■ Main Components
Overall length 80.1 in (2,035 mm)
Overall width 28.3 in (720 mm)
Overall height 44.1 in (1,120 mm)
Wheelbase 54.3 in (1,380 mm)
Minimum ground clearance 5.7 in (145 mm)
Caster angle 25.1°
Trail 3.9 in (98 mm)
Curb weight
CBR300R 357 lb (162 kg)
CBR300RA 364 lb (165 kg)
Maximum weight capacity
*1
366 lb (166 kg)
Maximum weight in storage
compartment
*2
6.6 lb (3.0 kg)
Passenger capacity Rider and 1 passenger
Minimum turning radius 8.2 ft (2.5 m)
*1 : Including rider, passenger, all luggage, and accessories
*2 : Includes the weight of the luggage and added accessories
Displacement 17.4 cu-in (286 cm
3
)
Bore x stroke 2.99 x 2.48 in (76.0 x 63.0 mm)
Compression ratio 10.7:1
Fuel
Unleaded gasoline
Recommended fuel octane number: Pump
Octane Number (PON) 86 or higher.
Tank capacity 3.43 US gal (13.0 L)
Battery
YTX7L-BS
12 V-6 Ah (10 HR)
Gear ratio
1st 3.416
2nd 2.250
3rd 1.650
4th 1.350
5th 1.166
6th 1.038
Reduction ratio
(primary / final)
2.807 / 2.571
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Specifications
110
■ Service Data
Tire size
Front 110/70-17M/C 54S
Rear 140/70-17M/C 66S
Tire type Bias-ply, tubeless
Recommended tire
Front IRC RX-01FD
Rear IRC RX-01RZ
Tire air pressure
Up to
maximum
weight
capacity
Front
29 psi (200 kPa, 2.00 kgf/cm
2
)
Rear
33 psi (225 kPa, 2.25 kgf/cm
2
)
Up to
200 lb
(90 kg)
load
Front
29 psi (200 kPa, 2.00 kgf/cm
2
)
Rear
29 psi (200 kPa, 2.00 kgf/cm
2
)
Minimum tread
depth
Front 0.06 in (1.5 mm)
Rear 0.08 in (2.0 mm)
Spark plug (standard) SIMR8A9 (NGK)
Spark plug gap
(non-
adjustable)
0.031 - 0.035 in (0.80 - 0.90
mm)
Idle speed
(non-
adjustable)
1,400 ± 100 rpm
Recommended
engine oil
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, Pro Honda GN4 4-stroke oil
(USA & Canada) or Honda 4-stroke oil, or an
equivalent motorcycle oil
Engine oil
capacity
After
draining
1.5 US qt (1.4 L)
After
draining &
engine oil
filter change
1.6 US qt (1.5 L)
After
disassembly
1.9 US qt (1.8 L)
Recommended
brake fluid
Honda DOT 4 Brake Fluid
Cooling system
capacity
1.16 US qt (1.10 L)
Recommended
coolant
Pro Honda HP Coolant
Recommended
drive chain
lubricant
Pro Honda HP Chain Lube or equivalent
Drive chain slack 13/16 - 1 3/16 in (20 - 30 mm)
Standard drive
chain
RK 520KLO or DID 520VF
No. of links 108
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Specifications
Specifications
111
Standard sprocket
size
Drive
sprocket
14T
Driven
sprocket
36T
■ Bulbs
Headlight 12 V-55 W x 2
Brake Light/Taillight 12 V-21/5 W
Front turn signal 12 V-21 W x 2
Rear turn signal 12 V-21 W x 2
License plate light 12 V-5 W
■ Fuses
Main fuse 30 A
Other fuse
CBR300R 15 A, 10 A
CBR300RA 30 A, 15 A, 10 A
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Specifications
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112
Information Record
VIN
Engine No.
Color Label & Code
Owner's Name
Address
City/State
Phone
Dealer's Name
Address
City/State
Phone
Service Manager
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113
California Proposition 65 Warning
WARNING: Operating, servicing and maintaining a passenger
vehicle or off-highway motor vehicle can expose you to chemicals
including engine exhaust, carbon monoxide, phthalates, and lead,
which are known to the State of California to cause cancer and birth
defects or other reproductive harm. To minimize exposure, avoid
breathing exhaust, do not idle the engine except as necessary, service
your vehicle in a well-ventilated area and wear gloves or wash your
hands frequently when servicing your vehicle. For more information go
to
www.P65Warnings.ca.gov/passenger-vehicle.
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Black
PANTONE
286C
Trim size: A6 (105 * 148 mm)
2021
2021
PRINTED IN XXXX
XXXX.2020.XX.M
31K75A50
00X31-K75-A501
CBR300R/RA
EN
CBR300R/RA
