n n mum
Operator's Manual
4-Cycle
Gasoline Trimmer
Model TB425CS
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
P/N 769-00442 (10/02)
PRINTED IN USA
Content Page
Calling Customer Support .................................................... 2
Rules for Safe Operation ..................................................... 3
Know Your Unit ...................................................... 6
Assembly Instructions ................................................. 7
Oil and Fuel Information ...................................................... 8
Starting/Stopping Instructions ................................................ 10
Operating Instruet=ons ...................................................... 11
Maintenance and Repair Instructions ...................................... 13
Cleaning and Storage ....................................................... 21
Accessories and Replacement Parts ....................................... 21
Troubleshooting Chart ...................................................... 22
Specifications ........................................................... 23
Warranty Information ....................................................... 26
Paris Dst .................................................... Inside Back Cover
NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon and Washington. All U.S. Forest Land and the state of
California (Public Resources Codes 4442 and 4443), Oregon and Washington require_ by law that certain internal combustion engines operated
on forest brush and/or grass-covered areas be equipped with a spark arrestor, maintained in effective working order, or the engine be
constructed, equipped and maintained for the prevention of fire. Check with your state or local authorities for regulations pertaining to these
requirements. Failure to follow these requirements could subject you to liability or a fine, This unit is factory equipped with a spark arrestor, !f
it requires replacement, Accessory Part #180890 Spark Arrestor Screen is available by contacting the service department.
This operator's manual is an important part of your new trimmer. It will help you assemble, prepare and maintain the unit
for best performance. Please read and understand what it says.
Before you start assembling your new equipment, please locate the model plate on the equipment and copy the
information from it in the space provided below. This information is very important if you need help from our Customer
Support Department or an authorized dealer.
ri I- " Modei/ParefitPartHurnber
_e 8 NUmDOr
Copy the model / parent part
MDUPPN:
Set.No:
Copy the seria! number here:
If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of
this unit, please call the Customer Support Department.
Ca11,1-(330)-558-7220 or 1-(866)-840-6483 to reach a Customer Support representative. Please have
your
(,'_ unit s model number and serial number ready when you call. See the previous section to locate this
information. You will be asked to enter the serial number in order to process your call.
2
The purpose of safety symbols is to attract your
attention to possible dangers. The safety symbols,
and their explanations, deserve your careful attention
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions or
warnings they give are not substitutes for proper
accident prevention measures.
SYMBOL MEANING
4_ ' i ' SAFETY ALERT SYMBOL: Indicates
Idanger, warning or caution. Attention is
! irequired in order to avoid serious personal
mjury_ May be used in conjunction with
other symbols or pictographs.
NOTE: Advises you of information or instructions vital
to the operation or maintenance of the
equipment.
SYMBOL MEANING
_;i DANGER: Failure to Obey a safety warning
will result in serious injury to yourself or to
others. Always follow the safety
precautions to reduce the risk of fire,
electric shock and personal injury.
_k WARNING: Failureto obey a safety
warning Can result in injury to yourself and
others. Always follow the safety
precautions to reduce the risk of fire,
electric shock and personal injury.
_ I i CAUTION: Failure to 0bey a safety warning
may result in property damage or personal
injury to yourself or to others. Always follow
the safety precautions to reduce the risk of
fire, electric shock and personal injury.
California Proposition 65 Warning:
THE ENGINE EXHAUST FROM THIS
PRODUCT CONTAINS CHEMICALS
KNOWN TO THE STATE OF CALIFORNIA
TO CAUSE CANCER, BIRTH DEFECTS
OR OTHER REPRODUCTIVE HARM.
READ ALL INSTRUCTIONS
BEFORE OPERATING
• Read the instructions carefully. Be familiar with the
controls and proper use of the unit.
• Do not operate this unit when tired, ill or under the
influence of alcohol, drugs or medication.
• Children and teens under the age of 15 must not use
the unit, except for teens guided by an adult.
• Inspect the unit before use. Replace damaged parts.
Check for fuel leaks. Make sure all fasteners are in
place and secure. Replace cutting attachment parts
that are cracked, chipped or damaged in any way.
Make sure the cutting attachment is properly installed
and securely fastened. Be sure the cutting attachment
shield is properly attached, and positioned as
recommended. Failure to do so can result in personal
injury to the operator and bystanders, as well as
damage to the unit.
• Use only 0.095 inch (2.41 mm) diameter Genuine
Factory Parts rMreplacement line. Never use metal-
reinforced line, wire or rope. These can break off and
become dangerous projectiles.
• Be aware of the risk of injury to the head, hands and
feet.
• Clear the area to be cut before each use. Remove all
objects such as rocks, broken glass, nails, wire or
string. They can be thrown or become entangled in the
cutting attachment. Clear the area of children,
bystanders, and pets. At a minimum, keep all children,
bystanders and pets outside a 50-foot (15 m.) radius;
there still may be a risk to bystanders from thrown
objects. Bystanders should be encouraged to wear
eye protection. If you are approached, stop the engine
and cutting attachment immediately.
• Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments
or repairs before using unit.
• This unit was not designed to be used as a
brushcutter. Do not attach or operate this unit with any
type of brushcutting blade or brushcutting attachment.
SAFETY WARNINGS FOR GAS TRIMMERS
WARNING: Gasoline is highly flammable, and
its vapors can explode if ignited. Take the
fo ow ng precaut ons:
• Store fuel only in containers specifically designed and
approved for the storage of such materials.
• Always stop the engine and allow it to cool before
filling the fuel tank. Never remove the cap of the fuel
tank, or add fuel, when the engine is hot. Never
operate the unit without the fuel cap securely in place.
Loosen the fuel tank cap slowly to relieve any pressure
in the tank.
• Add fuel in a clean, well-ventilated outdoor area where
there are no sparks or flames. Slowly remove the fuel
cap only after stopping engine. Do not smoke while
fueling or mixing fuel. Wipe up any spilled fuel from the
unit immediately.
• Avoid creating a source of ignition for spilled fuel. Do
not start the engine until fuel vapors dissipate.
• Move the unit at least 30 feet (9.1 m) from the fueling
source and site before starting the engine. Do not
smoke. Keep sparks and open flames away from the
area while adding fuel or operating the unit.
3
WHILE OPERATING
• Never start or run the unit inside a closed room or
building. Breathing exhaust fumes can kill. Operate
this unit only in a well ventilated outdoor area.
• Wear safety glasses or goggles that are marked as
meeting ANSI Z87.1-1989 standards. Also wear
ear/hearing protection when operating this unit. Wear
a face or dust mask if the operation is dusty. Long
sleeve shirts are recommended.
• Wear heavy, long pants, boots and gloves. Do not
wear loose clothing, jewelry, short pants, sandals or
go barefoot. Secure hair above shoulder level.
• The cutting attachment shield must always be in place
while operating the unit. Do not operate unit without
both trimming lines extended, and the proper line
installed. Do not extend the trimming line beyond the
length of the shield.
• This unit has a clutch. The cutting attachment remains
stationary when the engine is idling. If it does not, have
the unit adjusted by an authorized service technician.
• Adjust the J-handle to your size to provide the best
grip.
• Be sure the cutting attachment is not in contact with
anything before starting the unit.
• Use the unit only in daylight or good artificial light.
• Avoid accidental starting. Be in the starting position
whenever pulling the starter rope. The operator and
unit must be in a stable position while starting. See
Starting/Stopping Instructions.
• Use the right tool. Only use this tool for the purpose
intended.
• Do not overreach. Always keep proper footing and
balance.
• Always hold the unit with both hands when operating.
Keep a firm grip on both the front and rear handle or
grips.
• Keep hands, face, and feet at a distance from all
moving parts. Do not touch or try to stop the cutting
attachment when it is rotating.
• Do not touch the engine or muffler. These parts get
extremely hot from operation. They remain hot for a
short time after you turn off the unit.
• Do not operate the engine faster than the speed
needed to cut, trim or edge. Do not run the engine at
high speed when you are not cutting.
• Always stop the engine when cutting is delayed or
when walking from one cutting location to another.
• If you strike or become entangled with a foreign
object, stop the engine immediately and check for
damage. Do not operate before repairing damage. Do
not operate the unit with loose or damaged parts.
• Stop and switch the engine to off for maintenance,
repair, or for changing the cutting attachment or other
attachments.
Use only Genuine Factory Parts TM replacement parts
and accessories for this unit. These are available from
your authorized service dealer. Use of any
unauthorized parts or accessories could lead to
serious injury to the user, or damage to the unit, and
void your warranty.
• Keep unit clean of vegetation and other materials.
They may become lodged between the cutting
attachment and shield.
• To reduce fire hazard, replace faulty muffler and spark
arrestor, keep the engine and muffler free from grass,
leaves, excessive grease or carbon build up.
OTHER SAFETY WARNINGS
• Never store the unit, with fuel in the tank, inside a
building where fumes may reach an open flame or
spark.
• Allow the engine to cool before storing or transporting.
Be sure to secure the unit while transporting.
• Store the unit in a dry area, locked up or up high
to prevent unauthorized use or damage, out of the
reach of children.
• Never douse or squirt the unit with water or any other
liquid. Keep handles dry, clean and free from debris.
Clean after each use. See the Cleaning and Storage
instructions.
• Keep these instructions. Refer to them often and use
them to instruct other users. If you loan someone this
unit, also loan them these instructions.
SAVE THESE INSTRUCTIONS
4
SAFETY AND INTERNATIONAL SYMBOLS
This operator's manual describes safety and international symbols and pictographs that may appear on this product.
Read the operator's manual for complete safety, assembly, operating and maintenance and repair information.
SYMBOL MEANING SYMBOL
• SAFETY ALERT SYMBOL __
Indicates danger, warning, or //._..._
caution. May be used in conjunction
with other symbols or pictographs. -/
©
WARNING - READ OPERATOR'S
MANUAL
Read the Operator's Manual(s) and
follow all warnings and safety
instructions. Failure to do so can
result in serious injury to the
operator and/or bystanders.
WEAR EYE AND HEARING
PROTECTION
WARNING: Thrown objects and
loud noise can cause severe eye
injury and hearing loss. Wear eye
protection meeting ANSI Z87.1-1989
standards and ear protection when
operating this unit. Usea fullface
shield when needed.
MEANING
• THROWN OBJECTS AND
ROTATING CUTTER CAN CAUSE
SEVERE INJURY
WARNING: Do not operate without
the cutting attachment shield in
place. Keep away from the rotating
cutting attachment.
• ON/OFF STOP CONTROL
ON / START / RUN
• ON/OFF STOP CONTROL
OFF OR STOP
HOT SURFACE WARNING
Do not touch a hot muffler or
cylinder. You may get burned. These
parts get extremely hot from
operation. When turned off they
remain hot for a short time.
KEEP BYSTANDERS AWAY
WARNING: Keep all bystanders,
especially children and pets, at least
50 feet (15 m.) from the operating area.
SHARPBLADE
WARNING: Sharp blade on cutting
attachment shield. To prevent
serious injury, do not
touch line cutting blade.
• UNLEADED FUEL
Always use clean, fresh unleaded fuel.
• OIL
Refer to operator's manual for the
proper type of oil.
5
APPLICATIONS
As a trimmer:
Cutting grass and light weeds
Edging
Decorative trimming around trees, fences, etc.
Other optional accessories may be used with the
TB425CS. Refer to Operating the EZ-Link System for a
list of add-ons.
Starter Rope Grip
Shaft Grip
Spark Arrestor
_Spark Plug
Fuel Cap
On/Off Sto_
Shoulder Strap
Throttle
Control
EZ.Link TM
\
\
Air Filter Cover
J-Handle
Spark Plug
Primer Bulb
Shaft
Housing
\
\
\
\
\
\
Cutting Attachment
Shield
Line Cutting Blade
Engine Feet
Oil Fill Plug / Dipstick
Cutting
6
On some units, the J-handle may be pre-installed. In this
case you must loosen screws and adjust the handle to fit
the operator. Go to step 5 if the J-handle is pre-installed.
INSTALL AND ADJUST THE J-HANDLE
1. Place the J-handle between the top and middle
clamp pieces (Fig. 1).
(4)
Top Clamp
Middle Clamp
Bottom Clamp
Nuts _
Fig. 1
2. While holding the three pieces together, install the four
(4) screws through the top clamp and into middle clamp.
NOTE: The holes in the top and middle clamp will line up
only when assembled correctly.
3. Place the clamps and the J-handle over the shaft
housing and onto the bottom clamp.
4. Hold each hex nut in the bottom clamp recess with a
finger. Start screws with a large Phillips screwdriver.
Do not tighten until you make the handle adjustment.
5. Slide the J-handle in or out until the arrow/white line on
the decal touches the clamp assembly (Fig. 2).You must
first loosen the screws if the handle is pre-installed.
Decal (X
INSTALLING THE CUTTING SHIELD
Use the following instructions if the cutting attachment
shield on your unit is not installed or if you ever need to
re-install it.
J_ [WARNING: Never 0perate the trimmer ]
|without the cutting attachment shield in place |
Jto prevent Serious personal injury. J
1. Place the cutting attachment shield onto the shaft
housing above the clamp assembly (Fig. 4).
Shaft /
Housing /
2.
Clamp
/
Cutting Attachment
Shield
Fig. 4
Push the cutting attachment shield down to the top
of the cutting attachment assembly. Then rotate the
shield until its screw holes line up with the holes in
the cutting attachment. The shield guard should fit
into the recessed pocket (Fig. 4).
(4) Screws
Fig. 2
6. While holding the unit in the operating position (Fig. 3),
position the J-handle to the location that provides you
the best grip.
Fig. 5
3. Install the screws with a Phillips screwdriver (Fig. 5).
Fig. 3
7. Tighten the clamp screws evenly, until the J-handle
is secure.
7
DANGER: OVERFILLING OIL CRANKCASE
MAY CAUSE SERIOUS PERSONAL
INJURY. Check and maintain the proper oil
level in the crank case; it is important and
cannot be overemphasized. Check the oil
before each use and change it as needed.
See Changing the Oil.
RECOMMENDED OIL TYPE
Using the proper type and weight of oil in the crankcase
is extremely important. Check the oil before each use
and change the oil regularly. Failure to use the correct
oil, or using dirty oil, can cause premature engine wear
and failure.
Use a high-quality SAE 30 weight oil of API (American
Petroleum Institute) service class SF, SG, SH.
ADDING OIL TO CRANKCASE: INITIAL USE
NOTE: This unit is shipped without oil. In order to avoid
damage to the unit, put oil in the crankcase
before you attempt to start the unit.
Your unit is supplied with one 3.4 fluid oz. (100 ml.)
bottle of SAE 30 SF, SG, SH oil (Fig. 6).
NOTE: Save the bottle of oil. It can be used to measure
the correct amount during future oil changes.
See Changing the Oil.
1. Unscrew the top of the bottle of oil and remove the
paper seal covering the opening. Replace the top.
Next, cut the tip off the funnel spout (Fig. 6).
Funnel Spout_
Fig. 6
2. Place the unit on a flat level surface.
3. Remove the oil plug / dipstick from the crankcase
(Fig. 7).
O-Ring _i
Oil FillPlug/Dipstick- _.._ /
Oil Fill Hole /
Fig. 7
4. Pour the entire bottle of oil into the oil fill hole
(Fig. 8).
Fig. 8
NOTE: Never add oil to the fuel or fuel tank.
5. Wipe up any oil that may have spilled and reinstall
the oil fill plug / dipstick.
Check oil before each use and change as needed. Refer
to Changing the Oil.
8
RECOMMENDED FUEL TYPE
Old fuel is the primary reason for improper unit
performance. Be sure to use fresh, clean, unleaded
gasoline.
NOTE: This is a four cycle engine. In order to avoid
damage to the unit, do not mix oil with
gasoline.
Definition of Blended Fuels
Today's fuels are often a blend of gasoline and
oxygenates such as ethanol, methanol or MTBE (ether).
Alcohol-blended fuel absorbs water. As little as 1%
water in the fuel can make fuel and oil separate or form
acids when stored. Use fresh fuel (less than 60 days
old), when using alcohol-blended fuel.
Using Blended Fuels
If you choose to use a blended fuel, or its use is
unavoidable, follow recommended precautions:
Always use fresh unleaded gasoline
Use the fuel additive STA-BIL ® or an equivalent
Drain tank and run the engine dry before storing unit
Using Fuel Additives
The use of fuel additives, such as STA-BIL ® Gas
Stabilizer or an equivalent, will inhibit corrosion and
minimize the formation of gum deposits. Using a fuel
additive can keep fuel from forming harmful deposits in
the carburetor for up to six (6) months. Add 0.8 oz.
(23 ml.) of fuel additive per gallon of fuel according to the
instructions on the container. NEVER add fuel additives
directly to the unit's gas tank.
FUELING THE UNIT
WARNING: Gasoline is extremely flammable
and its vapors can explode if ignited. To avoid
serious personal injury, always stop the engine
and allow it to cool before filling the fuel tank.
Do not smoke while filling the tank. Keep
sparks and open flames away from the area.
1. Remove the fuel cap (Fig. 9).
l_ |WARNING: Remove the fuel cap Slowly to I|
lavo d njury from gaso ne spray.
Fig. 9
2. Place the gas container's spout into the fill hole on
the fuel tank (Fig. 9) and fill the tank.
l_ WARNING:Add gasoline in a clean, well- I
ventilated outdoor area. Avoid creating a
l source of gn t on for Sp t rue. J
NOTE: Do not overfill the tank.
3. Wipe up any gasoline that may have spilled.
4. Reinstall the fuel cap.
I_ IWARNING: Never operate the unit without
lthe rue! cap securely in place.
5. Move the unit at least 30 ft. (9.1 m) from the fueling
source and site before starting the engine.
NOTE: Dispose of the old gasoline in accordance to
Federal, State and Local regulations.
9
STARTING INSTRUCTIONS
WARNING: Operate this unit only in a well-
ventilated area outdoors. Carbon monoxide
exhaust fumes can be lethal in a confined area.
WARNING: Avoid accidental starting. Remain
in the starting position when pulling the
starter rope (Fig. 12). The operator and unit
must be in a stable position while starting to
avoid Serious personal injury.
Make Sure that any Add-On item is installed
correctly and secure before starting the unit.
1. Check the oil level in the crankcase. Refer to
Checking the Oil Level.
2. Fill the fuel tank with fresh, clean unleaded gasoline.
Refer to Fueling the Unit.
3. Make sure the On/Off Stop Control is in the ON (I)
position (Fig. 10).
NOTE: For cold weather conditions (when the
temperature is below 40°F), flip the Cold Weather
Start Lever (Fig. 13) to the choked position and
continue to step 4. The choked position is down
and closed. DO NOT flip this lever down if the
temperature is above 40°F.
4. Fully press and release the primer bulb 10 times,
slowly, until FUEL IS VISIBLE IN THE PRIMER
BULB (Fig. 11). If you can't see fuel in the bulb, press
and release the bulb as many times as it takes before
you can see fuel in it.
5. With the unit in the starting position (Fig. 12), DO
NOT SQUEEZE THE THROTTLE CONTROL. Pull
the starter rope briskly 5 times. If the engine starts to
run before the fifth pull, proceed to step 6. If the
engine does not start, go back to step 4.
NOTE: For cold weather conditions (when the
temperature is below 40°F), flip the Cold Weather
Start Lever back to the open/up position.
6. Squeeze the throttle control to warm up the engine
for 5 to 10 seconds. In cold weather, let the engine
warm up for 30 to 60 seconds.
NOTE: If the engine stalls while squeezing the trigger, go
back to step 5.
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control (Fig. 12).
Allow the engine to cool down by idling.
2. Put the On/Off Stop Control in the OFF (O} position
(Fig. 10).
On/Off Stop
Control _ /
Stop/Off (O)
Start/On (I) /
jJ
Fig. 10
Cold Weather
Start Lever
Starter Rope
J
Throttle Control "
Throttle Control
Primer
Bulb
Fig. 11
Fig. 12
Fig. 13
Open
Cold _
Start Lever
Closed
10
OPERATING THE EZ-LINK TM SYSTEM
The EZ-Link TM system enables the use of these optional
Add-Ons.
Blower/Vacuum ........................... TBBV
Cultivator ................................ TBGC
Edger ................................... TBLE
Hedge Trimmer ........................... TBHS
Snow Thrower ............................ TBST
Straight Shaft Trimmer ...................... TBSS
Tree Pruner .............................. TBTP
Turbo Blower ............................. TBTB
_[WARNIN, G: Read and understand the
operator s manual for each add-on prior to
operation.
Removing the Cutting Attachment or Add-Ons
1. Turn the knob counterclockwise to loosen (Fig. 14).
2. Press and hold the release button (Fig. 14).
3. While firmly holding the upper shaft housing, pull
the cutting attachment or add-on straight out of the
EZ-Link TM coupler (Fig. 15).
2. While firmly holding the add-on, push it straight into
the EZ-Link TM coupler (Fig. 15).
NOTE: Aligning the release button with the guide recess
will help installation (Fig. 14).
Release Button
EZ-LinkTM Coupler
Hole
Upper Shaft Housing /
Lower Shaft Housing
Fig. 15
3. Turn the knob clockwise to tighten (Fig. 16).
,_ CAUTION: Lock the release button in the
primary hole and securely tighten the knob
before operat ng th sun t.
90_EdgingHole
I_IWARNING: To avoid serious personal injury J
and damage to the unit, shut unit off befo[e
remov ng or nsta ng add-ons.
Installing the Cutting Attachment or Add-Ons
NOTE: To make installing or removing the add-on
easier, place the unit on the ground or on a work
bench.
1. Turn knob counterclockwise to loosen (Fig. 14).
EZTLiBkTMCouplet Release Button
180"Edging Hole
L
Fig. 16
CAUTION: The cutting attachment and
add-ons with the EZ-Link TM system are to be
used in the primary hole unless stated
otherwise m the specific add-ons operator's
manual. Using the wrong hole could lead to
personal inJury, or damage to the unit
Knob
\
Guide Recess
Fig. 14
For edging when using the line head cutting attachment
wtth EZ-Link TM models, lock the release button of the
cutting attachment into the 90 ° edging hole or the 180°
edging hole (Fig 16/.
11
HOLDING THE TRIMMER
WARNING: Always wear eye, hearing, foot 1
and body protection to reduce the risk of I
injury when operating this unit. J
Before operating the unit, stand in the operating position
(Fig. 17). Check for the following:
The operator is wearing eye protection and proper
clothing
With a slightly-bent right arm, the operator's hand is
holding the shaft grip
The operator's left arm is straight, the left hand
holding the J-handle
The unit is at waist level
The cutting attachment is parallel to the ground and
easily contacts the grass without the need to bend over
Fig. 17
ADJUSTING TRIMMING LINE LENGTH
The Bump HeadTM cutting attachment allows you to
release trimming line without stopping the engine. To
release more line, lightly tap the cutting attachment on the
ground (Fig. 18) while operating the trimmer at high speed.
NOTE: Always keep the trimming line fully extended.
Line release becomes more difficult when the
cutting line gets shorter.
Fig. 18
Each time the head is bumped, about 1 inch (25.4 mm)
of trimming line releases. A blade in the cutbng
attachment shield will cut the line to the proper length if
any excess line is released.
For best results, tap the bump knob on bare ground or
hard soil. If you attempt a line release in tall grass, the
engine may stall. Always keep the trimming line fully
extended. Line release becomes more difficult when the
cutting line gets shorter.
12
NOTE: Do not rest the Bump Head rMon the ground
while the unit is running.
Some line breakage will occur from:
Entanglement with foreign matter
Normal line fatigue
Attempting to cut thick, stalky weeds
Forcing the line into objects such as walls or fence
posts
I _1_ [CAUTION: DOnot remove or alter the line [
.. |cutting blade assembly. Excessive line length |
|will make the clutch overheat. This may lead to |
pe.ouspersonalinjuryordamagetotheunit!J
TIPS FOR BEST TRIMMING RESULTS
Keep the cutting attachment parallel to the ground.
Do not force the cutting attachment. Allow the tip of
the line to do the cutting, especially along walls.
Cutting with more than the tip will reduce cutting
efficiency and may overload the engine.
Cut grass over 8 inches (200 mm) by working from
top to bottom in small increments to avoid
premature line wear or engine drag.
Cut from right to left whenever possible. Cutting to
the left improves the unit's cutting efficiency.
Clippings are thrown away from the operator.
Slowly move the trimmer into and out of the cutting
area at the desired height. Move either in a forward-
backward or side-to-side motion. Cutting shorter
lengths produces the best results.
Trim only when grass and weeds are dry.
The life of your cutting line is dependent upon:
Following the trimming techniques
What vegetation is being cut
Where vegetation is cut
For example, the line will wear faster when trimming
against a foundation wall as opposed to trimming
around a tree.
DECORATIVE TRIMMING
Decorative trimming is accomplished by removing all
vegetation around trees, posts, fences and more.
Rotate the whole unit so that the cutting attachment is at
a 30 ° angle to the ground (Fig. 19).
Fig. 19
MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the
frequency stated in the table. These procedures should
also be a part of any seasonal tune-up.
NOTE: Some maintenance procedures may require
special tools or skills. If you are unsure about
these procedures take your unit to any non-road
engine repair establishment, individual or
authorized service dealer.
NOTE: Maintenance, replacement, or repair of the
emission control devices and system may be
performed by any non-road engine repair
establishment, individual or authorized service
dealer.
WARNING: To prevent Serious injury, never J
perform maintenance or repairs with the unit
running. Always service and repair a cool unit. I
Disconnect the spark plug wire to ensure that I
the unit cannot start. ]
FREQUENCY MAINTENANCE REQUIRED REFER TO
Before starting engine Fill fuel tank with flesh fuel Page9
Check oil Page 16
Every i0 hours Clean and re-oil air filter Page 17
First Change at 10 hours Change 0il Page 16
Every 25 hours thereafter Change oil Page 16
Every 25 hours Clean spark arrestor Page 20
10 hours on new engine Check rocker arm to valve clearance and adjust Page 18
Every 25 hours Check rocker arm to valve clearance and adjust Page 18
Every 25 hours Check spark plug condition and gap . Page 20
LINE INSTALLATION FOR THE SPEEDSPOOL _
wire, Chain, or rope, etc. These can break off
J_JWARNING: Never use metal-reinforced line,
and become dangerous project es.
Always use Genuine Factory Parts rM0.095 inch
(2.41 mm) replacement line. Lines other than those
specified may make the engine overheat or fail.
There are two methods to replace the SpeedSpool ®
trimming line:
• Wind the inner reel with new line
• Install a pre-wound inner reel
Winding the Inner Reel With New Line
NOTE: It Is unnecessary to remove the bump knob to
install a new trimming line.
1. Cut two pieces of 0.095 inch (2.41 mm) trimming
line, 10 feet (3 m)long.
2. Hold the outer spool and turn the inner reel
counterclockwise to line up the arrows on the outer
spool and inner reel (Fig. 20).
Allk WARNING: Always use the correct line
._, length when installing trimming line on the
I unit. The line may not release properly if the I
[ J ne stoo orig. ]
Top View Of The SpeedSpoor
Arrows
Outer Spool
Inner Reel
Fig. 20
Bump Knob
13
.
4.
Pull old line out of the line loading and line locking
holes (Fig. 21 and 22).
Insert a piece of trimming line into one of the two
eyelets in the outer spool. Push it up through the line
loading hole in the inner reel (Fig. 21). Do not bend
the line when inserting it into the eyelet.
7.
8.
Repeat procedures 4-6 with the second piece of line.
Hold the outer spool. Wind the inner reel
counterclockwise until approximately four (4) inches
(102 mm) of line remain (Fig. 24).
NOTE: Do not wind the inner reel before installing the
second piece of line.
.
Trimming Line
Eyelet
Line Loading Hole
Fig. 21
Insert the line into the locking hole (Fig. 22). Do not
push the line more than a 1/2 inch (12.7 mm) into the
line locking hole. The line will form a small loop
(Fig. 22) when it is inserted correctly.
g.
Fig. 24
If winding the line becomes difficult or if the line
jams, pull the ends of the line from the spool
(Fig. 25). Continue winding the inner reel
counterclockwise.
.
Line Locking Hole
Fig.22
Pull the line from the outer spool until the line is tight
against the inner reel (Fig. 23).
Fig. 25
INSTALLING A PRE-WOUND REEL
1. Turn the bump knob counterclockwise and remove
the bump knob, spring and foam seal (Fig. 26).
Bump Knob _
Foam Seal
Spring__
I
Fig. 23
14
Fig. 26
2. Pull the old inner reel with existing line from the outer
spool.
3. Insert the ends of the prewound inner reel line into
the outer spool eyelets (Fig. 27). Push the new inner
reel, arrow side up, into the outer spool.
4,
Fig.27
Hold the inner reel in place and install the bump
knob, spring and foam seal. Press down and turn the
bump knob clockwise. Grasp the ends and pull
firmly to release the line from the holding slots in the
inner reel (Fig. 25).
Releasing the Inner Reel
If the SpeedSpooP does not release line correctly, pull
the ends of the line firmly from the spool (Fig. 25). If this
does not the release line, follow the Cleaning the
SpeedSpooP > instructions.
CLEANING THE SPEEDSPOOL _
Cleaning the SpeedSpooP may be necessary if:
Ajammed or excessive line must be removed
The SpeedSpooP becomes difficult to wind or does
not operate correctly when bumping the head on the
ground
1. Hold the outer spool, and unscrew the bump knob
counterclockwise (Fig. 28).
2. Pull out the bump knob, spring and foam seal
(Fig. 26).
4=
=
Remove any existing line from the inner reel before
cleaning. Remove any debris or grass from the knob,
spring, inner reel and foam seal. Wash the inner reel
with warm soapy water (Fig. 29).
Inner Reel
Fig. 29
Clean the shaft and the inner surface of the outer
spool. To clean the shaft underneath the plunger,
press down on the plunger (Fig. 30). Remove any dirt
or debris from the shaft.
Shaft \
Plunger
Fig. 30
NOTE: The inner reel must be totally dry before
reinstalling it into the outer spool. Do not
lubricate the inner reel or outer spool assembly.
6. Place the inner reel into the outer spool.
7. Place the bump knob, spring and foam seal onto the
inner reel (Fig. 26).
8. Press the bump knob down and tighten clockwise.
9. Install new line as described in Line Installation for
the SpeedSpooP >.
Fig.28
3. Pull the inner reel with existing line from the outer
spool.
SPEEDSPOOL _>REPLACEMENT PARTS
Replacement Line ........................ 180120
Replacement Line Cartridge ............. 753-04218
Inner Reel Spring ........................ 181465
Foam Seal .............................. 181467
Inner Reel .............................. 181464
Bump HeadTM Assembly ................... 181468
(Bump Knob, Foam Seal, Spring, )
These SpeedSpool ®replacement parts can be
purchased from your local authorized dealer.
15
CHECKING THE OIL LEVEL
CAUTION: To prevent extensive engine I
wear and damage to the unit, always I
maintain the proper oil level in the I
crankcase. Never operate the unit with the I
oil level below the bottom of the dipstick. 1
The importance of checking and maintaining the proper
oil level in the crankcase cannot be overemphasized.
Check oil before each use:
1. Stop the engine and allow oil to drain into the crankcase.
2. Place the unit on a flat, level surface to get a proper
oil level reading.
3. Keep dirt, grass clippings and other debris out of the
engine. Clean the area around the oil fill plug/dipstick
before removing it.
4. Remove the oil fill plug/dipstick and wipe off oil.
Reinsert it all the way back in.
5. Remove the oil fill plug/dipstick and check the oil level.
Oil should be up to the top of the dipstick (Fig. 31).
CHANGING THE OIL
For a new engine, change the oil after the first 10 hours of
operation. Change the oil while the engine is still warm. The
oil will flow freely and carry away more impurities.
[_ [CAUTION: Wear gloves to prevent injury ]
lwhen handling the unit.
1,
2.
3.
Unplug spark plug boot to )revent accidental starting.
Remove the oil fill plug/dipstick.
Pour the oil out of the oil fill hole and into a container
by tipping the unit to a vertical position (Fig. 33).
Allow ample time for complete drainage.
Oil Fill Plug/Dipstick-_
O-Ring
Full _
Add 1.4-1.5 Oz.
(41-44 ml)
Top of Dipstick
,
Fig.31
If the level is low, add a small amount of oil to the oil
fill hole and recheck (Fig. 32). Repeat this procedure
until the oil level reaches the top of the dipstick.
NOTE: Do not overfill the unit.
Fig. 33
4. Wipe up any oil residue on the unit and clean up any
oil that may have spilled. Dispose of the oil
according to Federal, State and local regulations.
5. Refill the crankcase with 3.4 fluid ounce (100 ml) of
SAE 30 SF, SG, SH oil.
NOTE: Use the bottle and spout saved from initial use to
measure the correct amount of oil. The top of the
label on the bottle measures approximately 3.4
ounces (100 ml) (Fig. 34). Check the level with the
dipstick. If the level is low, add a small amount of
oil and recheck. Do not overfill (Fig. 34).
O-Ring
Oil Fill Hole J
Fig. 32
NOTE: Make sure the O-ring is in place on the oil fill
plug/dipstick when checking and changing the
oil (Fig. 32).
,
7.
Fill Level
Fig. 34
Replace the oil fill plug/dipstick.
Reconnect the spark plug boot.
16
AIR FILTER MAINTENANCE
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of operation.
It is an important item to maintain. Failure to maintain the
air filter will VOID the warranty.
WARNING: To avoid serious personal injury
always turn your trimmer off and allow it to
cool before you clean or service it.
1. Open the air filter cover. Push the tab on the right
side of the cover inward. Then pull the air filter cover
out and to the left (Fig. 35).
NOTE: It may be necessary to remove the fuel cap to
completely remove the air filter cover.
2. Remove the air filter (Fig. 35).
• . AirFilt_r_// F
Fig. 35
3. Wash the filter in detergent and water (Fig. 36). Rinse
the filter thoroughly and allow it to dry.
J
\
\\\\
Fig. 37 Fig. 38
5. Squeeze the filter to spread and remove excess oil
(Fig. 38).
6. Replace the filter (Fig. 39).
NOTE: If the unit is operated without the air filter, you
will VOID the warranty.
Back Plato
\
Back Plate Slot
Slots
Fig. 39
7. Reinstall the air filter cover. Position the hooks on
the left side of the air filter cover into the slots at the
left side of the back plate (Fig. 39).
NOTE: It may be necessary to remove the fuel cap to
reinstall the air filter cover.
8. Swing the cover to the right until the tab on the air
filter cover snaps into place in the slot on the back
plate (Fig. 39).
9. Replace the fuel cap if it was removed.
4.
Fig.36
Apply enough clean SAE 30 motor oil to lightly coat
the filter (Fig. 37).
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable. An idle
adjustment screw is reached though a hole in the top of
the engine cover (Fig. 40).
NOTE: Careless adjustments can seriously damage your
unit. An authorized service dealer should make
carburetor adjustments.
Check Fuel
Old fuel is usually the reason for improper unit
performance. Drain and refill the tank with fresh fuel prior
to making any adjustments. Refer to Oil and Fuel
Information.
17
Clean Air Filter
The condition of the air filter is important to the operation
of the unit. A dirty air filter will restrict air flow. This is
often mistaken for an out of adjustment carburetor.
Check the condition of the air filter before adjusting the
idle speed screw. Refer to Air Filter Maintenance.
Adjust Idle Speed Screw
_, ARNING: The cutting attachment may spin
during idle speed adjustments. Wear
protective clothing and observe all safety
instructions to prevent serious personal injury. I
If. after checking the fuel and cleaning the air filter, the
engine still will not idle. adJUStthe idle speed screw as
follows:
1. Start the engine and let it run at a high idle for a minute
to warm up. Refer to Starting/Stoppin 9 Instructions
2.
Release the throttle trigger and let the engine idle. If the
engine stops inserta small phillips or fiat blade screwdriver
into the hole in the air filter/muffler cover (Fig. 40). Turn
the idle speed screw in.clockwise 1/8 of a turn at a
time las neededJuntil the engine idles smoothly.
NOTE: The cutting attachment should not rotate when
[he engine idles.
3. If the cutting attachment rotates when the engine idles.
turnthe idle speed screw counterclockwise 1/8 of a
[urn a[ a time [as needed), to reduce idle speed.
Checking the fuel. cleantng the air filter, and adJUSting
the idle speed should solve most engine problems. If not
and all of the following are true:
• the engine will not idle
• the engine hesitates or stalls on acceleration
• there is a loss of engine power
Have the carburetor adjusted by an authorized service dealer.
ROCKER ARM CLEARANCE
This requires disassembly of the engine. If you feel
unsure or unqualified to perform this, take the unit to an
authorized service center.
NOTE: Inspect the valve to rocker arm clearance with a
feeler gauge after the first 10 hours of operation
and then every 25 hours of operation thereafter.
• The engine must be cold when checking or adjusting
the valve clearance.
1.
This task should be performed inside, in a clean,
dust free area.
Remove the muffler cover by pressing down on it,
separating it from the engine cover. Using a flat
blade screwdriver, disengage the middle and front
tabs and slots first. The cover will hinge off from the
rear tab (Fig. 41).
Engine Cover
Rear Slot
and Tab
/
\ Front Slot
_1_ fWARNING: To prevent Serious personal I
A_" |injury, make sure the cutting attachment I
ml_m,|has stopped rotating before you turn it off I
[and set it down. I
Fig. 41
2. Remove the two (2) screws on top of the engine cover
with a Flat-head or T-20 Torx screwdriver (Fig. 42).
/Idle Adjustment Screw
Top View Of The Engine
Engine Cover
Fig. 40
Fig. 42
18
3. Removethescrewbehindtheenginecover(Fig.43).
4.
5.
.
7.
Fig.43
Disconnect the spark plug wire.
Clean dirt from around the spark plug. Remove the
spark plug from the cylinder head by turning a 5/8 in.
socket counterclockwise.
Remove the engine cover (Fig. 42).
Clean dirt from around the rocker arm cover.
Remove the screw holding the rocker arm cover with
a large flat blade screwdriver or Torx T-25 bit
(Fig. 44). Remove the rocker arm cover and gasket.
Rocker Arm Cover
Rocker Arms
INTAKE
Feeler Gauge
Exhaust
Adjusting Nut ..
Exhaust
Clearance:
.013-.016 in.
Adjusting Nuts
EXHAUST
Fig. 45
Exhaust
Rocker Arm
Spark Plug Hole
Fig. 44
8. Pull the starter rope slowly to bring the piston to the top
of its travel, (known as top dead center). Check that:
• The piston is at the top of its travel while looking in
the spark plug hole (Fig. 44)
Both rocker arms move freely, and both valves are
closed
If these statements are not true, repeat this step.
9. Slide the feeler gauge between the rocker arm and
the valve return spring. Measure the clearance
between the valve stem and rocker arm (Fig. 45).
Measure both the intake and exhaust valves.
The recommended clearance for the intake is .003 - .006
in. (.076 -0.152 mm). The recommended clearance for
the exhaust is .013 - .016 in. (.330 - 0.406 mm).
Use a standard automotive .005 in. (0.127 mm) feeler gauge.
The feeler gauge should slide between the rocker arm and
valve stem with a slight amount of resistance, without
binding. Figure 45 shows how to measure the intake
clearance, while Figure 46 shows the exhaust clearance.
Intake Valve
Stem
Intake Clearance:
.003-.006 in.
(.076-0.152 mm)
\
Exhaust Valve Stem
Fig. 46
10. If the clearance is not within specification:
a. Turn the adjusting nut using a 5/16 inch (8 mm)
wrench or nut driver (Fig. 46).
• To increase clearance, turn the adjusting nut
counterclockwise.
• To decrease clearance, turn the adjusting nut
clockwise.
b. Recheck both clearances, and adjust as necessary.
14.
15.
11. Reinstall the rocker arm cover using a new gasket.
Torque the screw to 20-30 in.lb (2.2-3.4 N.m).
12. Reinstall the engine cover. Check alignment of the
cover before tightening the screws. Tighten screws.
13. Reinstall the muffler cover. Slip the rear tab on the
muffler cover into the engine cover rear slot. Then
slide the remaining slots into the tabs until they snap
into place (Fig. 41).
Check the spark plug and reinstall. See Replacing
the Spark Plug.
Replace the spark plug wire.
19
REPLACING THE SPARK PLUG
Use only Champion RDZ19H spark plug or equivalent. The
correct air gap is 0.025 in. (0.655 mm.). Remove the plug
after every 25 hours of operation and check its condition.
1. Stop the engine and allow it to cool. Grasp the plug
wire firmly and pull the cap from the spark plug.
2. Clean dirt from around the spark plug. Remove the
spark plug from the cylinder head by turning a 5/8 in.
socket counterclockwise.
3. Replace cracked, fouled or dirty spark plug. Setthe air
SPARK ARRESTOR MAINTENANCE
1. Remove the muffler cover. See Rocker Arm Clearance.
2. With a flat blade screwdriver or Torx T-20 bit,
remove the screw attaching the spark arrestor cover
to the muffler (Fig. 48).
Muffler Spark Arrestor Screen
gap at 0.025 in. (0.655 ram.) using a feeler gauge (Fig. 47).
Tab / Screw
Slot_ Spark Arrestor Cover
Fig. 47
I&[CAUTION: DOnot sand blast, Scrape, or
clean electrodes. Grit in the engine could
damage the cy rider.
4. Install a correctly-gapped spark plug in the cylinder
head. Turn the 5/8 in. socket clockwise until snug.
If using a torque wrench torque to:
110-120 in.,Ib. (12.3-13.5 N,m)
Do not over tighten.
Fig. 48
.
4.
5.
6.
Pull the tab on the spark arrestor cover out of the
muffler. Remove the spark arrestor cover.
Remove the spark arrestor screen from the spark
arrestor cover.
Clean the spark arrestor screen with a wire brush or
replace it.
Reinstall the spark arrestor screen, spark arrestor
cover and screw.
2O
CLEANING
IA[ W_f_ N'NuG:;cO rat'O'dmse:iOO_fsanpc_ras_Inali_r_'O0'
before you c ean or do any ma ntenance on it.
Use a small brush to clean off the outside of the unit. Do
not use strong detergents. Household cleaners that
contain aromatic oils such as pine and lemon, and
solvents such as kerosene, can damage plastic housing
or handle. Wipe off any moisture with a soft cloth.
STORAGE
• Never store the unit with fuel in the tank where fumes
may reach an open flame or spark.
• Allow the engine to cool before storing.
• Lock up the unit to prevent unauthorized use or damage.
• Store the unit in a dry, well-ventilated area.
• Store the unit out of the reach of children.
LONG TERM STORAGE
1. Drain all gasoline from the gas tank into a container.
Do not use gas that has been stored for more than 60
days. Dispose of the old gasoline in accordance to
Federal, State, and Local regulations.
2. Start the engine and allow it to run until it stalls. This
ensures that all gasoline has been drained from the
carburetor.
3. Allow the engine to cool. Remove the spark plug and
put 1 oz. (30 ml) of high quality motor oil into the
cylinder. Pull the starter rope slowly to distribute the
oil. Reinstall the spark plug.
NOTE: Remove the spark plug and drain all of the oil
from the cylinder before attempting to start the
trimmer after storage.
4. Change the oil, referring to Changing the Oil.
Dispose of the old oil in accordance to Federal, State
and Local regulations.
.
Thoroughly clean the unit and inspect for any loose
or damaged parts. Repair or replace damaged parts
and tighten loose screws, nuts or bolts. The unit is
ready for storage.
TRANSPORTING
Allow the engine to cool before transporting.
Secure the unit while transporting.
Drain the gas tank before transporting.
Tighten gas cap before transporting.
ACCESSORIES/REPLACEMENT PARTS
4-Cycle Oil .............................. 181786
Spark Plug .............................. 180852
Spark Arrestor Screen ..................... 180890
Replacement Line Cartridge .............. 753-04218
Fuel Cap .............................. 753-1229
Shoulder Harness ........................ 682075
For a full list of replacement parts, refer to the parts list
located at the inside back cover of this manual.
21
CAUSE
Empty fuel tank
Primer bulb wasn't pressed enough
Old fuel
Fouled spark plug
Plugged spark arrestor
When it is above 40°F outside, the Cold Weather Start
Lever is in the CLOSED/DOWN position
When it is below 40°F outside, the Cold Weather Start Lever
is in the OPEN/UP position
ACTION
Fill fuel tank with new fuel
Press primer bulb fully and slowly 10 times
Drain gas tank and add fresh fuel
Replace or clean the spark plug
Clean or replace spark arrestor
Flip the Cold Weather Start Lever to OPEN/UP
Flip the Cold Weather Start Lever to CLOSED/DOWN
and follow the Starting Instructions
CAUSE
Air filter is plugged
Old fuel
Improper carburetor adjustment
CAUSE
Old fuel
Improper carburetor adjustment
Cutting attachment bound with grass
Dirty air filter
Plugged spark arrestor
ACTION
Replace or clean the air filter
Drain gas tank and add flesh fuel
Adjust carburetor
ACTION
Drain gas tank and add flesh fuel
Take to an authorized service dealer for adjustment
Stop the engine and clean the cutting attachment
Clean or replace the air filter
Clean or replace spark arrestor
CAUSE
Old fuel
Improper carburetor adjustment
Fouled spark plug
Plugged spark arrestor
CAUSE
Cutting attachment bound with grass
Cutting attachment out of line
Inner reel bound up
Cutting head dirty
Line welded
Line twisted when refilled
Not enough line is exposed
CAUSE
Oil, cleaner or lubricant in cutting head
ACTION
Drain gas tank and add flesh fuel
Take to an authorized service dealer for adjustment
Replace or clean the spark plug
Clean or replace spark arrestor
ACTION
Stop the engine and clean cutting attachment
Refill with new line
Replace the inner reel
Clean inner reel and outer spool
Disassemble, remove the welded section and rewind
Disassemble and rewind the line
Push the bump knob and pull out line until 4 inches
(102 mm) of line is outside of the cutting attachment
ACTION
Clean and thoroughly dry the cutting head
If further assistance is required, contact your authorized service dealer.
22
Engine Type .......................................................................................................................................... Air-Cooled, 4-Cycle
Displacement ......................................................................................................................................... 1.6 cu. in. (26.2 cc)
Clutch Type ......................................................................................................................................................... Centrifugal
Operating RPM ........................................................................................................................................ 6,800 - 9,300 rpm
Idle Speed RPM ...................................................................................................................................... 3,000 - 3,600 rpm
Ignition Type .......................................................................................................................................................... Electronic
Ignition Switch ................................................................................................................................................ Rocker Switch
Valve clearance (intake) ......................................................................................................... 003-.006 in. (.076-.152 mm)
Valve clearance (exhaust) ...................................................................................................... 013-.016 in. (.330-.406 mm)
Spark Plug Gap ................................................................................................................................ 0.025 inch (0.655 mm)
Lubrication ........................................................................................................................................................... SAE 30 Oil
Crankcase Oil Capacity ................................................................................................................................ 3.4 oz (100 ml)
Fuel ....................................................................................................................................................................... Unleaded
Carburetor ....................................................................................................................................... Diaphragm, All-Position
Starter ............................................................................................................................................................... Auto Rewind
Muffler ..................................................................................................................................................... Baffled with Guard
Throttle ............................................................................................................................................... Manual Spring Return
Fuel Tank Capacity ........................................................................................................................................ 12 oz (355 ml)
Drive Shaft Housing .................................................................................................................. Aluminum Tube (EZ-LinM M)
Throttle Control ........................................................................................................................................ Finger-Tip Trigger
Unit Weight (No Fuel, with J-handle, Cutting attachment shield and Cutting attachment) ........................ 13.15 Ibs (6 kg)
Cutting Mechanism ....................................................................................................................... Dual String Cutting Head
Line Spool ............................................................................................................................................. Bump Line Releaser
Line Spool Diameter .............................................................................................................................. 3 inches (76.2 ram)
Trimming Line Diameter ................................................................................................................. 0.095 inches (2.41 ram)
Cutting Path Diameter ........................................................................................................................ 17 inches (43.18 cm)
*All specifications are based on the latest product info[mation available at the time of printing. We reserve the right to
make changes at any time without notice.
23
24
EPA Emission Control Warranty Statement
Your Warranty Rights and Obligations
The Environmental Protection Agency and MTD SOUTHWEST INC (MTD) are pleased to explain the emission control
system warranty on your 2002 and later small off-road engine. New small off-road engines must be designed, built and
equipped to meet stringent anti-smog standards. MTD must warrant the emission control system on your small off-road
engine for the periods of time listed below provided there has been no abuse, neglect or improper maintenance of your
small off-road engine.
Your emission control system may include parts such as the carburetor or fuel-injected system, the ignition system, and
catalytic converter. Also included may be hoses, belts, connectors and other emission-related assemblies.
Where a warrantable condition exists, MTD will repair your small off-road engine at no cost to you including diagnosis,
parts and labor.
The 2002 and later small off-road engines are warranted for two years. If any emission-related part on your engine is
defective, the part will be repaired or replaced my MTD.
Owners Warranty Responsibilities
• As the small off-road engine owner, you are responsible for the performance of the required maintenance listed in your
operator's manual. MTD recommends that you retain all receipts covering maintenance on your small off-road engine,
but MTD cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all
scheduled maintenance.
• As the small off-road engine owner, you however should be aware that MTD may deny you warranty coverage if your
small off-road engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.
• You are responsible for presenting your small off-road engine to a MTD Authorized Service Center as soon as a
problem exists. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities, you should call 1-800-345-8746.
Manufacturer's Warranty Coverage
• The warranty period begins on the date the engine or equipment is delivered to the retail purchaser.
• The manufacturer warrants to the initial owner and each subsequent purchaser, that the engine is free from defects in
material and workmanship which cause the failure of a warranted part for a period of two years.
• Repair or replacement of warranted part will be performed at no charge to the owner at an Authorized MTD Service
Center. For the nearest location please contact MTD at: 1-800-345-8746.
• Any warranted part which is not scheduled for replacement, as required maintenance or which is scheduled for only
for regular inspection to the effect of "Repair or Replace as Necessary" is warranted for the warranty period. Any
warranted part which is scheduled for replacement as required maintenance will be warranted for the period of time up
to the first scheduled replacement point for that part.
• The owner will not be charged for diagnostic labor which leads to the determination that a warranted part is defective,
if the diagnostic work is performed at an Authorized MTD Service Center.
• The manufacturer is liable for damages to other engine components caused by the failure of a warranted part still
under warranty.
• Failures caused by abuse, neglect or improper maintenance are not covered under warranty.
• The use of add-on or modified parts can be grounds for disallowing a warranty claim. The manufacturer is not liable to
cover failures of warranted parts caused by the use of add-on or modified parts.
• In order to file a claim, go to your nearest Authorized MTD Service Center. Warranty services or repairs will be
provided at all Authorized MTD Service Centers.
• Any manufacturer approved replacement part may be used in the performance of any warranty maintenance or repair
of emission related parts and will be provided without charge to the owner. Any replacement part that is equivalent in
performance or durability may be used in non-warranty maintenance or repair and will not reduce the warranty
obligations of the manufacturer
• The following components are included in the emission related warranty of the engine, air filter, carburetor, primer, fuel
lines, fuel pick up/fuel filter, ignition module, spark plug and muffler.
25
ENGINE PARTS - MODELS TB425CS
4-CYCLE GAS TRIMMER
(_ _,_,_,G'_ PPN - 41ADT42C063
®
@
,J
@
@
@
@
@
@
®
E25
ENGINE PARTS - MODELS TB425CS '
4-CYCLE GAS TRIMMER
PPN - 41ADT42C063
Item Part NO. Description Item Part No. Description
1 753_04083 Engine Cover 45 791-181247 Palnut
2 79%182339 Engine Cover Screws 46 753-1199 Recoil Pulley
3 79%181025 Valve Cover Screw 47 753-04286 Recoil Spring
4 79%182098 Valve Cover 48 791-182366 Nut Clip
8 79%182099 Valve Cover Gasket 49 791-181079 Pull Handle
6 791_182340 Rocker Adjustment Nut 50 791-611061 Rope Guide
7 79%182101 Rocker Arm Pivot 51 791-613103 Rope
8 79%182100 Rocker Arm 52 791-181020 Starter Housing Screw
9 791-182341 Rocker Arm Stud 53 753-1237 Starter Housing Assembly (includes 48-81)
10 79%182103 Valve Spring Retainer 54 791-182368 Clutch Washer
11 79%181038 Valve Spring 55 753-1238 Clutch with Spacer
12 79%182102 Push Rod Guide 56 791-153592 Clutch Drum
13 79%181033 Push Rod 57 753-1239 Clutch Cover
14 79%182745 CylinderAssembly(includesg&12) 58 791-145569 Anti+RotationScrew
15 79%182344 Cylinder Screw 59 753-1240 Screw
16 79%182345 Intake Baffle 60 753-1241 Nut
17 79%182749 Carburetor Mount Gasket 61 791-181345 Clutch Cover Screw
18 79%181034 Nut 62 753-04298 ignition Module with Screws
19 79%182347 Carburetor Mount (includes 18) 63 791-181065 Spacer
20 79%182348 Carburetor Mount Screw 64 753-04299 Flywheel
21 791-182732 Carburetor Gasket 65 791-182743 Shroud Assembly with Screws
22 753_04296 Carburetor with Primer 66 791-182376 Crankcase Assembly (includes 67 & 68)
23 791-181781 O_Ring, Carburetor 67 791-182375 90° Elbow
24 753_04305 Air FiltedChoke Cover Assembly (includes 27) 68 791-182379 Breather Hose
25 79%182097 Breather Tube 69 791-181015 Cam Gear
26 791-181780 Air Filter Mounting Screw 70 753-1242 Cam Follower Set
27 791-181787 Air Filter 71 791-181013 Cam Bracket
28 753_1229 Fuel Cap 72 791-181012 Cam Bracket Screw
29 79%182382 Fuel Return Line 73 791-181040 Valves, intake and Exhaust
30 79%182383 Fuel Pick_Up Line with Filter 74 791-182374 Cylinder Gasket
32 79%181080 Screw 75 791-181018 Oil Pan Gasket
32 791-182354 Washer 76 791-182377 Oil Pan (includes 75 & 77)
33 753_1230 Fuel Tank Assembly (includes 28+30) 77 791-181020 Oil Pan Screw
34 791-182356 Fuel Tank Shield 78 753-04041 Dipstick Assembly
38 753_04297 Throttle Cable 79 791-182290 O-Ring
36 79%182388 Muffler Baffle 80 791-181009 Connecting Rod
37 79%181048 Muffler Gasket 81 791-181008 Wrist Pin Button
38 79%182389 Muffler (includes 37, 39-41) 82 753-1243 Piston
39 79%180890 Spark Arrestor Screen 83 791-181006 WristPin
40 79%181045 Screen Cover 84 791-182295 Piston Ring Set
41 79%181046 Screw 85 791-182409 Washer
42 791-182361 Muffler Mounting Screw 86 791-181861 Shroud Screw
43 753-04092 Muffler Cover 87 791-612468 Compression Spring
44 79%182804 Switch Wire Assembly 88 791-182537 Grommet
89 753-04316 Air Cleaner Cover
791-180852B Spark Plug
753-1245 Short Block Assembly (includes 3q4, 65_84)
791-180142 Starter Pawl Repair Kit
791-182156 Carburetor Repair Kit
753-1248 Gasket Diaphragm Repair Kit
Parts not shown
E26
-- BOOM AND TRIMMER PARTS - MODEL TB425CS
4-CYCLE GAS TRIMMER
PPN - 41ADT42C063
Item Part No.
1 753_04234 Throttle Housing and Trigger Assembly
(includes 2 & 3)
2 753*04119 Throttle Trigger
3 791-182690 Throttle Trigger Spring
4 791N82405 Switch Assembly
5 753*04297 Throttle Cable
6 791-180687 J_Handle Assembly
7 791-683295 Handle Bracket Assembly (includes 8N 3)
8 791-181811 Screw
9 791-181812 Upper Handle Clamp
10 791-181813 Middle Handle Clamp
11 791-181814 Lower Handle Clamp
12 791-181815 Nut
13 791-145569 Anti-Rotation Screw
14 791_610327 Harness Clip
15 753N 247 Upper Drive Shaft Housing Assembly
16 753-1190 EZ-Link TM Coupler (includes 17-20)
17 791-182057 Screw
18 791-181617 Bolt
19 791-181981 Adjustment Knob
20 791N81886 Knob Retaining Nut
21 753*04304 Lower Drive Shaft Housing Assembly
22 791-181852 Lower Flexible Drive Shaft
23 791-181560 Palnut
24 791-153597 Lower Clamp Assembly
25 791-145569 Anti-Rotation Screw
26 791-180531 Shield Mounting Hardware
27 791 *181659 Shield and Blade Assembly (includes 28)
28 791-181823 Blade Assembly
29 791-181857 Bushing Housing Assembly
30 791-181457 Outer Spool Assembly (includes 31)
31 791-181458 Retaining Ring
32 791-181561 Thrust Washer
33 791-181459 Small Spring
34 791-181461 Slider
35 791-181532 E_Clip
36 791-181531 Spring
37 791-181462 Plunger
38 791-181463 C-Clip
39 791-181464 Inner Reel
40 791-181465 Large Spring
41 791-181467 Foam Seal
42 791N81468 Bump Head Knob Assembly
(includes 40 & 41)
Optional Accessories
791-180120 Replacement Line, 0,095 Diameter
753-04218 Reel and Line Assembly
791-682075 Shoulder Strap Assembly
Items Not Shown
E27
MANUFACTURER,S LIMITED WARRANTY FOR:
The limited warranty set forth below is given by Troy-Bilt
LLC with respect to new merchandise purchased and
used in the United States, its possessions and territories.
Troy-Bilt LLC warrants this product against defects in
material and workmanship for a period of two (2) years
commencing on the date of original purchase and will, at
its option, repair or replace, free of charge, any part found
to be defective in material or workmanship. This limited
warranty shall only apply if this product has been operated
and maintained in accordance with the Operator's Manual
furnished with the product, and has not been subject to
misuse, abuse, commercial use, neglect, accident,
improper maintenance, alteration, vandalism, theft, fire,
water or damage because of other peril or natural disaster.
Damage resulting from the installation or use of any
accessory or attachment not approved by Troy-Bilt LLC
for use with the product(s) covered by this manual will void
your warranty as to any resulting damage. This warranty is
limited to ninety (90) days from the date of original retail
purchase for any Troy-Bilt product that is used for rental or
commercial purposes, or any other income-producing
purpose.
HOW TO OBTAIN SERVICE: Warranty service is
available, WITH PROOF OF PURCHASE THROUGH
YOUR LOCAL AUTHORIZED SERVICE DEALER. To
locate the dealer in your area, visit our website at
www.troybilt.com, check for a listing in the Yellow Pages,
call 1 (866) 840-6463 or 1 (330) 558-7220 or write to Troy-
Bilt LLC, PO Box 361131, Cleveland, OH 44136-0019.
This limited warranty does not provide coverage in
the following cases:
A. Tune-ups - Spark Plugs, Carburetor Adjustments,
Filters
B. Wear items - Bump Knobs, Outer Spools, Cutting
Line, Inner Reels, Starter Pulley,Starter Ropes, Drive
Belts
C. Troy-Bilt LLC does not extend any warranty for
products sold or exported outside of the United
States of America, its possessions and territories,
except those sold through Troy-Bilt's authorized
channels of export distribution.
Troy-Bilt LLC reserves the right to change or improve the
design of any Troy-Bilt Product without assuming any
obligation to modify any product previously manufactured.
No implied warranty, including any implied warranty
of merchantability or fitness for a particular purpose,
applies alter the applicable period of express written
warranty above as to the parts as identified. No other
express warranty or guaranty, whether written or oral,
except as mentioned above, given by any person or
entity, including a dealer or retailer, with respect to
any product shall bind Troy-Bilt LLC During the period
of the Warranty, the exclusive remedy is repair or
replacement of the product as set forth above. (Some
states do not allow limitations on how long an implied
warranty lasts, so the above limitation may not apply to
you.)
The provisions as set forth in this Warranty provide
the sole and exclusive remedy arising from the sales.
Troy-Bilt LLC shall not be liable for incidental or
consequential loss or damages including, without
limitation, expenses incurred for substitute or
replacement lawn care services, for transportation or
for related expenses, or for rental expenses to
temporarily replace a warranted product. (Some states
do not allow limitations on how long an implied warranty
lasts, so the above limitation may not apply to you.)
In no event shall recovery of any kind be greater than the
amount of the purchase price of the product sold.
Alteration of the safety features of the product shall void
this Warranty. You assume the risk and liability for loss,
damage, or injury to you and your property and/or to
others and their property arising out of the use or misuse
or inability to use the product.
This limited warranty shall not extend to anyone other
than the original purchaser, original lessee or the person
for whom it was purchased as a gift.
How State Law Relates to this Warranty: This warranty
gives you specific legal rights, and you may also have
other rights which vary from state to state.
To locate your nearest service dealer dial 1 (866) 840-6483.
Troy-Bilt LLC
PO Box 361131
Cleveland, OH 44136-0019
