MTD TB25CS Le manuel du propriétaire

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Le manuel du propriétaire

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Operator’s Manual
2-Cycle Gasoline
Trimmers
Model TB75SS or
TB25CS
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
P/N 769-00734 (4/03)
PRINTED IN USA
2
INTRODUCTION
Copy the serial number
here:
THANK YOU
Thank you for buying this quality product. This modern
outdoor power tool will provide many hours of useful
service. You will find it to be a great labor-saving device.
This operator’s manual provides you with easy-to-
understand operating instructions. Read the whole
manual and follow all the instructions to keep your new
outdoor power tool in top operating condition.
PRODUCT REFERENCES, ILLUSTRATIONS
AND SPECIFICATIONS
All information, illustrations, and specifications in this
manual are based on the latest product information
available at the time of printing. We reserve the right to
make changes at any time without notice.
Copyright© 2003 MTD SOUTHWEST INC, All Rights
Reserved.
SERVICE INFORMATION
Service on this unit both within and after the warranty
period should be performed only by an authorized and
approved service dealer.
For service call 1-800-520-5520 to obtain a list of
authorized service dealers near you. For more details
about your unit, visit our website at www.troybilt.com.
DO NOT RETURN THE UNIT TO THE RETAILER.
PROOF OF PURCHASE WILL BE REQUIRED FOR
WARRANTY SERVICE.
Before beginning, locate the unit’s model plate. It lists
the model and serial numbers of your unit. Refer to the
sample plate below and copy the information for future
reference.
S/N :
ITEM :
MODEL :
Make sure you carefully read and understand this manual
before starting or operating this equipment.
THIS PRODUCT IS COVERED BY ONE OR MORE U.S.
PATENTS. OTHER PATENTS PENDING.
TABLE OF CONTENTS
Service Information . . . . . . . . . . . . . . . . . . . . . . . . .2
Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . .3
Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . .7
Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . .8
Starting/Stopping Instructions . . . . . . . . . . . . . . . . .9
Operating Instructions . . . . . . . . . . . . . . . . . . . . . .10
Maintenance and Repair Instructions . . . . . . . . . . .12
Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . .18
Accessories and Replacement Parts . . . . . . . . . . .18
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . .19
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Warranty Information . . . . . . . . . . . . . . . . . . . . . . .22
Parts List . . . . . . . . . . . . . . . . . . . .Inside Back Cover
Copy the model and parent
part number here:
SPARK ARRESTOR NOTE
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. If it requires replacement, ask your LOCAL
SERVICE DEALER to install the Accessory Part
#182747 Spark Arrestor Kit.
CALIFORNIA PROPOSITION 65 WARNING
WARNING
THE ENGINE EXHAUST FROM THIS
PRODUCT CONTAINS CHEMICALS
KNOWN TO THE STATE OF CALIFORNIA
TO CAUSE CANCER, BIRTH DEFECTS
OR OTHER REPRODUCTIVE HARM.
3
RULES FOR SAFE OPERATION
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.
All guards and safety attachments must be installed
properly before operating the unit.
Inspect the unit before use. Replace damaged parts.
Check for fuel leaks. Make sure all fasteners are in
place and secure. Replace parts that are cracked,
chipped, or damaged in any way. Do not operate the
unit with loose or damaged parts.
Carefully inspect the area before starting the unit.
Remove all debris and hard or sharp objects such as
glass, wire, etc.
Be aware of the risk of injury to the head, hands and
feet.
Clear the area of children, bystanders, and pets. At a
minimum, keep all children, bystanders, and pets
outside a 50 feet (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 unit immediately.
Use only 0.095 inch (
2.41 mm) diameter Genuine
Factory Parts™ replacement line. Never use metal-
reinforced line, wire or rope. These can break off and
become dangerous projectiles.
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 UNITS
Store fuel only in containers specifically designed and
approved for the storage of such materials.
Avoid creating a source of ignition for spilled fuel. Do
not start the engine until fuel vapors dissipate.
SYMBOL MEANING
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.
NOTE: Advises you of information or instructions vital to
the operation or maintenance of the equipment.
SYMBOL MEANING
When using the unit,
you must follow the
safety rules. Please read these instructions
before operating the unit in order to ensure
the safety of the operator and any bystanders.
Please keep these instructions for later use.
WARNING:
• IMPORTANT SAFETY INSTRUCTIONS •
Failure to 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.
WARNING:
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.
DANGER:
Failure to obey 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.
CAUTION:
Indicates
danger,
warning or caution. Attention is required in
order to avoid serious personal injury. May
be used in conjunction with other symbols
or pictographs.
SAFETY ALERT:
Gasoline is highly
flammable, and its
vapors can explode if ignited. Take the
following precautions:
WARNING:
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.
FOR QUESTIONS, CALL 1-800-520-5520
4
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™ 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
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.
Mix and 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. Always wipe unit dry before using.
Move the unit at least 30 feet (9.1 m) from the fueling
source and site before starting the engine. Do not
smoke or allow sparks and open flames near the area
while adding fuel or operating the unit.
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 D-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.
RULES FOR SAFE OPERATION
5
SYMBOL MEANING
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.
Use a full face shield when needed.
KEEP BYSTANDERS AWAY
WARNING:Keep all
bystanders, especially children and
pets, at least 50 feet (15 m.) from the
operating area.
UNLEADED FUEL
Always use clean, fresh unleaded fuel.
OIL
Refer to operator's manual for the
proper type of oil.
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
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.
SHARP BLADE
WARNING:Sharp blade
on cutting attachment shield. To
prevent serious injury, do not
touch line cutting blade.
RULES FOR SAFE OPERATION
6
RULES FOR SAFE OPERATION
APPLICATIONS
As a trimmer:
Cutting grass and light weeds.
Edging
Decorative trimming around trees, fences, etc.
Other optional accessories may be used with the
TB75SS and TB25CS. Refer to Operating the EZ-Link
System for a list of add-ons.
Cutting Attachment
Shield
Fuel Cap
Throttle
Control
D-Handle
Cutting Attachment
Shaft Grip
Primer Bulb
EZ-Start
Lever
Air Filter/Muffler
Cover
Engine
Stand
Spark Plug
Shaft Housing
Starter Rope Grip
KNOW YOUR UNIT
EZ-Link™
Spark Plug
Muffler
Muffler
Guard
Muffler
EZ-Start™ Lever
Line Cutting Blade
On/Off Stop
Control
Shoulder Strap Clip
7
ASSEMBLY INSTRUCTIONS
INSTALLING AND ADJUSTING THE D-HANDLE
Install
1. Remove the screws and bottom clamp piece that
were installed on the D-handle for shipping.
2. Place D-handle the over the shaft housing and onto
the bottom clamp (Fig. 1). Place it a minimum of 6
inches (15.24 cm) from the end of the shaft grip.
3. Start screws with a large Flat-head or T-25 Torx
screwdriver. Do not tighten until you make the
handle adjustment.
Adjust
4. If the D-handle was pre-installed, loosen the screws
on the handle just enough to move it.
(4) Screws
Shaft
Housing
D-Handle
Bottom Clamp
Shaft Grip
Minimum 6 inches
(15.24 cm)
On/Off Stop Control
5. While holding the unit in the operating position,
manuever the D-handle to the location that provides
you the best grip.
6. Tighten the clamp screws evenly, until the D-handle
is secure.
Fig. 1
INSTALLING THE CUTTING ATTACHMENT 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.
Install on a Straight Shaft (TB75SS)
1. Slide the cutting attachment shield into the shield
mount on the cutting attachment. Align the screw
holes in the shield with the holes in the cutting
attachment (Fig. 2).
2. Place a hex lock nut into one of the three recessed
holes on the top of the cutting attachment shield (Fig 3).
3. Install a screw into the hole from the bottom of the
cutting attachment shield and screw it into the nut
installed in step 2 (Fig 3). Do not tighten.
4. Repeat steps 2 and 3 until all three screws have
been started, then tighten securely.
Fig. 2
Fig. 3
Screws (3)
Shaft Housing
Hex Lock
Nut
Cutting
Attachment
Shield
Cutting Attachment
Recessed Holes
Shield Mount
Install on a Curved Shaft (TB25CS)
1. Place the cutting attachment shield onto the shaft
housing above the clamp assembly (Fig. 4).
2. Push the cutting attachment shield down to the top of
the cutting attachment assembly and then rotate the
cutting attachment shield until the screw holes align
and the guard fits into the recessed pocket (Fig. 4).
3. Install the screws with a Phillips screwdriver (Fig. 5).
Fig. 4
(4) Screws
Clamp
Assembly
Cutting
Attachment
Assembly
Cutting
Attachment Shield
Recessed
Pocket
Fig. 5
Never operate the
trimmer without the
cutting attachment shield in place to
prevent serious personal injury.
WARNING:
8
OIL AND FUEL INFORMATION
NOTE: Dispose of the old fuel/oil mix in accordance to
Federal, State and Local regulations.
OIL AND FUEL MIXING INSTRUCTIONS
Old and/or improperly mixed fuel are the main reasons
for the unit not running properly. Be sure to use fresh,
clean unleaded fuel. Follow the instructions carefully for
the proper fuel/oil mixture.
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. It forms
acids when stored. When using alcohol-blended fuel,
use fresh fuel (less than 60 days old).
Using Blended Fuels
If you choose to use a blended fuel, or its use is
unavoidable, follow recommended precautions:
Always use the fresh fuel mix explained in your
operator's manual
Always agitate the fuel mix before fueling the unit
Drain the tank and run the engine dry before storing
the unit
Using Fuel Additives
The bottle of 2-cycle oil that came with your unit
contains a fuel additive which will help inhibit corrosion
and minimize the formation of gum deposits. It is
recommended that you use our 2-cycle oil with this unit.
If unavailable, use a good 2-cycle oil designed for
air-cooled engines along with a fuel additive, such as
STA-BIL
®
Gas Stabilizer or an equivalent. 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 fuel tank.
Thoroughly mix the proper ratio of 2-cycle engine oil
with unleaded gasoline in a separate fuel can. Use a 40:1
fuel/oil ratio. Do not mix them directly in the engine fuel
tank. See the table below for specific gas and oil mixing
ratios.
NOTE: One gallon (3.8 liters) of unleaded gasoline mixed
with one 3.2 oz. (95 ml.) bottle of
2-cycle oil makes a 40:1 fuel/oil ratio.
UNLEADED GAS 2 CYCLE OIL
1 GALLON US
(3.8 LITERS)
3.2 FL. OZ.
(95 ml)
1 LITER 25 ml
+
MIXING RATIO - 40:1
Add fuel in a clean,
well ventilated
outdoor area. Wipe up any spilled fuel
immediately. Avoid creating a source of
ignition for spilt fuel. Do not start the engine
until fuel vapors dissipate.
WARNING:
Gasoline is
extremely
flammable. Ignited Vapors may explode.
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 at a distance from the area.
WARNING:
Remove fuel cap
slowly to avoid injury
from fuel spray. Never operate the unit
without the fuel cap securely in place
.
WARNING:
For proper engine
operation and
maximum reliability, pay strict attention to
the oil and fuel mixing instructions on the
2-cycle oil container. Using improperly mixed
fuel can severely damage the engine.
CAUTION:
9
STARTING/STOPPING INSTRUCTIONS
STARTING INSTRUCTIONS
Fig. 6
Fig. 7
Throttle Control
(Do NOT squeeze during
a standard start)
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control. Allow the engine
to cool down by idling.
2. Put the On/Off Stop Control in the OFF (O) position (Fig. 6).
Primer
Bulb
EZ-Start™
Lever
Fig. 8
1. Mix gas with oil. Fill fuel tank with fuel/oil mixture.
See Oil and Fuel Mixing Instructions.
NOTE: There is no need to turn the unit on. The On/Off
Stop Control is in the ON ( I ) position at all times.
2. Fully press and release the primer bulb 10 times,
slowly. Some amount of fuel should be visible in
the primer bulb and fuel lines (Fig. 7). 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.
3. Push the EZ-Start™ Lever towards the primer
bulb until it clicks and locks into place (Fig. 7).
4. Crouch in the starting position and do not squeeze
the throttle control (Fig. 8). Pull the starter rope out
with a controlled and steady motion until the engine
attempts to start. Repeat until the engine starts.
NOTE: The unit uses Advanced Starting Technology™,
which significantly reduces the effort required to
start the engine. You must pull the starter rope out
far enough to hear the engine attempt to start.
There is no need to pull the rope briskly-- there is
no harsh resistance when pulling. Be aware that
this starting method is vastly different from (and
much easier than) what you may be used to.
5. When the engine starts, squeeze the throttle control
for 15 to 30 seconds. This will warm up the unit. The
EZ-Start™ Lever will click off automatically when
you squeeze the throttle control.
IF... The engine does not start, go back to step 2.
IF... The engine stops while you are squeezing the
throttle, go back to step 3.
IF... The engine stops before you squeeze the throttle
control, hold the throttle control and pull the starter
rope until the trimmer starts.
NOTE: If you are having trouble starting the unit or are
operating in extreme temperatures (below 40º F,
above 90º F), refer to the Troubleshooting section.
Start/On ( I )
Stop/Off (O)
Throttle
Control
Starting
Position
Trimmer
Equipped With
Advanced Starting
Technology™
Operate this unit only in a
well- ventilated outdoor
area. Carbon monoxide exhaust fumes can be lethal in
a confined area.
WARNING:
Avoid accidental starting.
Make sure you are in the
starting position when pulling the starter rope (Fig. 8).
To avoid serious injury, the operator and unit must be
in a stable position while starting.
Make sure that any Add-On item is installed correctly
and secure before starting the unit.
WARNING:
10
OPERATING THE EZ-LINK™ SYSTEM
The EZ-Link™ 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
Removing the Cutting Attachment or Add-Ons
1. Turn the knob counterclockwise to loosen (Fig. 9).
2. Press and hold the release button (Fig. 9).
3. While firmly holding the upper shaft housing, pull
the cutting attachment or add-on straight out of the
EZ-Link™ coupler (Fig. 10).
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. 9).
Fig. 9
EZ-Link™ Coupler
Release Button
Guide Recess
Knob
Primary Hole
Upper Shaft Housing
EZ-Link™ Coupler
2. While firmly holding the add-on, push it straight into
the EZ-Link™ coupler (Fig. 10).
NOTE: Aligning the release button with the guide recess
will help installation (Fig. 9).
3. Turn the knob clockwise to tighten (Fig. 11).
Fig. 10
Lower Shaft Housing
Release Button
WARNING: To avoid serious personal injury
and damage to the unit, shut unit off before
removing or installing add-ons.
WARNING: Read and understand the
operator’s manual for each add-on prior to
operation.
OPERATING INSTRUCTIONS
For edging (when using the line head cutting attachment
with EZ-Link™ models), lock the release button of the
cutting attachment into the 90° edging hole or the 180°
edging hole (Fig. 11).
Fig. 11
Knob
90˚ Edging Hole
(Trimmer Only)
180˚ Edging Hole
(Trimmer Only)
CAUTION: The cutting attachment and
add-ons with the EZ-Link™ system are to be
used in the primary hole unless stated
otherwise in the specific add-ons operator’s
manual. Using the wrong hole could lead to
personal injury, or damage to the unit.
CAUTION: Lock the release button in the
primary hole and securely tighten the knob
before operating this unit.
11
NOTE: Do not rest the Bump Head™ on 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
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.
HOLDING THE TRIMMER
Before operating the unit, stand in the operating position
(Fig. 12). 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 D-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 ove
r
ADJUSTING TRIMMING LINE LENGTH
The Bump Head™ 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. 13) 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.
Each time the head is bumped, about 1 inch (25.4 mm)
of trimming line releases. A blade in the cutting
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.
OPERATING INSTRUCTIONS
Fig. 13
Fig. 12
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. 14).
Fig. 14
TB75SS
TB25CS
TB25CS
TB25CS
TB75SS
TB75SS
Do not remove or alter
the line cutting blade
assembly. Excessive line length will make the
clutch overheat. This may lead to serious
personal injury or damage to the unit.
CAUTION:
Always wear eye,
hearing, foot and
body protection to reduce the risk of injury
when operating this unit.
WARNING:
12
LINE INSTALLATION FOR THE SPEEDSPOOL
®
Always use Genuine Factory Parts™ 0.095 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. 15).
Top View Of The SpeedSpool
®
Outer Spool
Inner Reel
Fig. 15
Bump Knob
Arrows
MAINTENANCE AND REPAIR INSTRUCTIONS
WARNING: Never use metal-reinforced line,
wire, chain, or rope, etc. These can break off
and become dangerous projectiles.
WARNING: Always use the correct line
length when installing trimming line on the
unit. The line may not release properly if the
line is too long.
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.
In order to assure peak performance of your engine,
inspection of the engine exhaust port may be necessary
after 50 hours of operation. If you notice lost RPM, poor
performance or general lack of acceleration, this service
may be required. If you feel your engine is in need of this
inspection, refer service to any non-road engine repair
establishment, individual or authorized service dealer for
repair. DO NOT attempt to perform this process yourself
as engine damage may result from contaminants
involved in the cleaning process for the port.
FREQUENCY MAINTENANCE REQUIRED REFER TO
Before starting engine Fill fuel tank with fresh fuel Page 8
Every 10 hours Clean and re-oil air filter Page 15
Every 25 hours
Check and clean spark arrestor
Check spark plug condition and gap
Page 16
Page 18
Every 50 hours
Inspect exhaust port and spark arrestor screen for clogging or
obstruction to assure maximum performance levels
Page 16
WARNING:
To prevent serious injury, never do
maintenance or repairs with unit running. Always do
maintenance and repairs on a cool unit. Disconnect
spark plug wire to ensure the unit will not start.
13
Line Locking Hole
Trimming Line
Line Loading Hole
Eyelet
5. Insert the line into the locking hole (Fig. 17). 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. 17) when it is inserted correctly.
3. Pull old line out of the line loading and line locking
holes (Fig. 16 and 17).
4. Insert a piece of trimming line straight into one of the
two eyelets in the outer spool. Push it up through the
line loading hole in the inner reel (Fig. 16). Do not
bend the line when inserting it into the eyelet.
Fig. 16
Fig. 17
6. Pull the line from the outer spool until the line is tight
against the inner reel (Fig. 18).
Fig. 18
INSTALLING A PRE-WOUND REEL
1. Turn the bump knob counterclockwise and remove
the bump knob, spring and foam seal (Fig. 21).
9. If winding the line becomes difficult or if the line
jams, pull the ends of the line from the spool
(Fig. 20). Continue winding the inner reel
counterclockwise.
Fig. 19
Fig. 20
7. Repeat procedures 4-6 with the second piece of line.
8. Hold the outer spool. Wind the inner reel
counterclockwise until approximately four (4) inches
(102 mm) of line remain (Fig. 19).
NOTE: Do not wind the inner reel before installing the
second piece of line.
Bump Knob
Foam Seal
Spring
Inner Reel
Fig. 21
MAINTENANCE AND REPAIR INSTRUCTIONS
14
SPEEDSPOOL
®
REPLACEMENT PARTS
Replacement Line . . . . . . . . . . . . . . . . . . . . . . . . 180120
Replacement Line Cartridge . . . . . . . . . . . . . 753-04218
Inner Reel Spring . . . . . . . . . . . . . . . . . . . . . . . . 181465
Foam Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181467
Inner Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181464
Bump Knob Assembly . . . . . . . . . . . . . . . . . . . . 181468
These SpeedSpool
®
replacement parts can be
purchased from your local authorized dealer.
4. 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. 20).
Releasing the Inner Reel
If the SpeedSpool
®
does not release line correctly, pull
the ends of the line firmly from the spool (Fig. 20). If this
does not the release line, follow the Cleaning the
SpeedSpool
®
instructions.
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. 22). Push the new inner
reel, arrow side up, into the outer spool.
Fig. 22
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. 24).
Fig. 23
CLEANING THE SPEEDSPOOL
®
Cleaning the SpeedSpool
®
may be necessary if:
•A jammed or excessive line must be removed
The SpeedSpool
®
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. 23).
2. Pull out the bump knob, spring and foam seal
(Fig. 21).
Shaft
Plunger
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. 21).
8. Press the bump knob down and tighten clockwise.
9. Install new line as described in Line Installation for
the SpeedSpool
®
.
5. Clean the shaft and the inner surface of the outer
spool. To clean the shaft underneath the plunger,
press down on the plunger (Fig. 25). Remove any dirt
or debris from the shaft.
Fig. 25
Inner Reel
Fig. 24
3. Pull the inner reel with existing line from the outer
spool.
MAINTENANCE AND REPAIR INSTRUCTIONS
15
MAINTENANCE AND REPAIR INSTRUCTIONS
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.
1. Remove air filter/muffler cover. Refer to Removing
the Air Filter/Muffler Cover.
2. Turn cover over and look inside to locate the air filter.
Remove the air filter from inside the air filter/muffler
cover (Fig. 27).
3. Wash the filter in detergent and water (Fig. 28). Rinse
the filter thoroughly. Squeeze out excess water. Allow
it to dry completely.
4. Apply enough clean SAE 30 oil to lightly coat the filter
(Fig. 29).
5. Squeeze the filter to spread and remove excess oil
(Fig. 30).
AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
1. Remove the four (4) screws securing the air
filter/muffler cover (Fig. 26). Use a flat blade or
T20 Torx bit screwdriver.
2. Pull the cover from the engine. Do not force.
Screws
Screws
Fig. 26
Fig. 27
Fig. 28
Fig. 29
Fig. 30
6. Replace the air filter inside the air filter/muffler cover
(Fig. 27).
NOTE: Operating the unit without the air filter and air
filter/muffler cover assembly will VOID the
warranty.
Reinstalling the Air Filter/Muffler Cover
1. Place the air filter/muffler cover over the back of the
carburetor and muffler. Align the screw holes.
2. Insert the four (4) screws into the holes in the air
filter/muffler cover (Fig. 26) and tighten.
Do not over tighten.
EZ-Start™
Lever
Air Filter
Inside Muffler
Cover
WARNING: To avoid serious personal injury,
always turn your trimmer off and allow it to
cool before you clean or service it.
16
MAINTENANCE AND REPAIR INSTRUCTIONS
SPARK ARRESTOR MAINTENANCE
1. Remove the air filter/muffler cover. See Removing the
Air Filter/Muffler Cover.
2. Locate the muffler front and the two (2) bolts securing
it to the engine (Fig. 31). Remove the two (2) bolts
using a flatblade screwdriver or 5/16-inch socket or
nut driver. Pull the muffler off of the engine.
3. Turn the muffler over to the back side and locate the
exhaust gasket. Remove the muffler gasket from the
muffler (Fig. 31).
NOTE: If exhaust gasket is torn or damaged, replace
with a new gasket before reassembling muffler.
4. Using a small flatblade screwdriver, carefully pry up
the spark arrestor from the recessed hole (Fig. 32).
Remove the spark arrestor from muffler.
5. Clean the spark arrestor with a wire brush. Replace it
if it is damaged or if it is impossible to clean
thoroughly (Fig. 32).
6. Reinstall the spark arrestor by pressing it into the
recessed hole on the muffler's back side. Make sure
it fits tightly against the muffler and is not raised up.
7. Place the exhaust gasket against the muffler's back
side. Align the exhaust gasket bolt holes with the bolt
holes in the muffler. While holding the exhaust gasket
in place, insert bolts into muffler's front side (Fig. 31).
8. Place the muffler (with the exhaust gasket in place
and the bolts inserted) against the engine, aligning
the bolt holes. Tighten the bolts to secure the muffler
to the engine.
If using a torque wrench torque to:
80-90 in.•lb. (9-10.2 N•m).
9. Reinstall air filter/muffler cover.
Fig. 32
Fig. 31
Muffler - Front Side
Muffler - Back Side
Bolts
Exhaust
Gasket
Spark
Arrestor
Muffler - Back Side
Spark
Arrestor
Flatblade
Screwdriver
Spark Arrestor
WARNING: If muffler is not tightened
securely, it could fall off causing damage to
the unit and possible serious personal injury.
17
MAINTENANCE AND REPAIR INSTRUCTIONS
Fig. 33
Idle Speed Screw
NOTE: The cutting attachment should not rotate when
the engine idles.
3. If the cutting attachment rotates when the engine idles,
turn the idle speed screw counterclockwise 1/8 of a
turn at a time (as needed), to reduce idle speed.
Checking the fuel mixture, cleaning 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.
Check Fuel Mixture
Old and/or improperly mixed fuel is usually the reason
for improper unit performance. Drain and refill the tank
with fresh, properly-mixed fuel prior to making any
adjustments. Refer to Oil and Fuel Information.
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 and
change the air/fuel mixture. 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
If, after checking the fuel mixture and cleaning the air
filter, the engine still will not idle, adjust the 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/Stopping
Instructions.
2. Release the throttle trigger and let the engine idle. If
the engine stops, insert a small phillips or flat blade
screwdriver into the hole in the air filter/muffler cover
(Fig. 33). Turn the idle speed screw in, clockwise,
1/8 of a turn at a time (as needed) until the engine
idles smoothly.
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable through the air
filter/muffler cover (Fig. 33).
NOTE: Careless adjustments can seriously damage your
unit. An authorized service dealer should make
carburetor adjustments.
WARNING: When the unit is turned off, make
sure the cutting attachment has stopped
before the unit is set down. This will help to
prevent serious personal injury.
WARNING: The cutting attachment may be
spinning during idle speed adjustments. Wear
protective clothing and observe all safety
instructions to prevent serious personal injury.
18
MAINTENANCE AND REPAIR INSTRUCTIONS
CLEANING
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.
Store the unit locked up to prevent unauthorized use or
damage.
Store the unit in a dry, well-ventilated area.
Store the unit out of the reach of children.
ACCESSORIES/REPLACEMENT PARTS
2-Cycle Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147543
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 610311
Replacement Line . . . . . . . . . . . . . . . . . . . . . . . . 180120
Replacement Line Cartridge . . . . . . . . . . . . . 753-04218
Fuel Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180000
Shoulder Strap . . . . . . . . . . . . . . . . . . . . . . . . . . 682075
For specific replacement parts, refer to the parts list
located on the inside back cover of this manual.
REPLACING THE SPARK PLUG
Use a Champion RDJ7Y spark plug (or equivalent).
The correct air gap is 0.020 inch (0.5 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 it from the spark plug.
2. Clean around the spark plug. Remove the spark plug
from the cylinder head by turning a 5/8 in. socket
counterclockwise.
3. Replace a cracked, fouled or dirty spark plug. Set the
air gap at 0.020 in. (0.5 mm) using a feeler gauge
(Fig. 34).
4. Install a correctly-gapped spark plug in the cylinder
head. Tighten by turning the 5/8-inch socket
clockwise until snug.
If using a torque wrench torque to:
110-120 in.•lb. (12.3-13.5 N•m)
Do not over tighten.
0.020 in.
(0.5 mm)
Fig. 34
LONG TERM STORAGE
If the unit will be stored for an extended time, use the
following storage procedure:
1. Drain all fuel from the fuel tank into a container with
the same 2-cycle fuel mixture. Do not use fuel that
has been stored for more than 60 days. Dispose of
the old fuel/oil mix in accordance to Federal, State
and Local regulations.
2. Start the engine and allow it to run until it stalls. This
ensures that all fuel has been drained from the
carburetor.
3. Allow the engine to cool. Remove the spark plug and
put 1 oz. (30 ml) of any high quality motor oil or
2-cycle 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. Thoroughly clean the unit and inspect it 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.
Drain fuel from unit.
Tighten fuel cap before transporting.
Secure the unit while transporting.
WARNING: To avoid serious personal injury,
always turn your trimmer off and allow it to cool
before you clean or do any maintenance on it.
CAUTION: Do not sand blast, scrape, or
clean electrodes. Grit in the engine could
damage the cylinder.
19
TROUBLESHOOTING
If further assistance is required, contact your authorized service dealer.
CAUSE ACTION
Cutting attachment bound with grass Stop the engine and clean cutting attachment
Cutting attachment out of line Refill with new line
Inner reel bound up Replace the inner reel
Cutting head dirty Clean inner reel and outer spool
Line welded Disassemble, remove the welded section and rewind
Line twisted when refilled Disassemble and rewind the line
Not enough line is exposed Push the bump knob and pull out line until 4 inches
(102 mm) of line is outside of the cutting attachment
CAUSE ACTION
Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture
Improper carburetor adjustment Take to an authorized service dealer for an adjustment
Fouled spark plug Replace or clean the spark plug
Plugged spark arrestor Clean or replace spark arrestor
CAUSE ACTION
Empty fuel tank Fill fuel tank with properly mixed fuel
Primer bulb wasn't pressed enough Press primer bulb fully and slowly 10 times
Engine is flooded Squeeze the trigger and pull the starter rope
Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture
Fouled spark plug Replace or clean the spark plug
Plugged spark arrestor Clean or replace spark arrestor
EZ-Start lever wasn’t flipped/set Move lever to the starting position
The outside temperature is below 40º F Pull the starter rope up to 10-15 times
The outside temperature is above 90º F Squeeze the throttle control and pull the starter rope
ENGINE WILL NOT START
ENGINE WILL NOT IDLE
ENGINE WILL NOT ACCELERATE
ENGINE LACKS POWER OR STALLS WHEN CUTTING
CAUSE ACTION
Air filter is plugged Replace or clean the air filter
Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture
Improper carburetor adjustment Adjust according to the Carburetor Adjustments section
CAUSE ACTION
Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture
Improper carburetor adjustment Take to an authorized service dealer for an adjustment
Cutting attachment bound with grass Stop the engine and clean the cutting attachment
Dirty air filter Clean or replace the air filter
Plugged spark arrestor Clean or replace spark arrestor
CUTTING ATTACHMENT WILL NOT ADVANCE LINE
CAUSE ACTION
Oil, cleaner or lubricant in cutting head Clean and thoroughly dry the cutting head
CUTTING LINE ADVANCES UNCONTROLLABLY
20
SPECIFICATIONS
ENGINE*
DRIVE SHAFT & CUTTING ATTACHMENT*
*All specifications are based on the latest product information available at the time of printing. We reserve the right to
make changes at any time without notice.
Engine Type.......................................................................................................................................... Air-Cooled, 2-Cycle
Stroke.................................................................................................................................................... 1.25 in. (31.75 mm)
Displacement............................................................................................................................................. 1.9 cu in. (31 cc)
Clutch Type ......................................................................................................................................................... Centrifugal
Idle Speed RPM ...................................................................................................................................... 2,800 - 4,000 rpm
Operating RPM.................................................................................................................................................. 7,200+ rpm
Ignition Type.......................................................................................................................................................... Electronic
Ignition Switch.............................................................................................................................................. Rocker Switch
Spark Plug Gap....................................................................................................................................... 0.020 in. (0.5 mm)
Lubrication................................................................................................................................................... Fuel/Oil Mixture
Fuel/Oil Ratio.................................................................................................................................................................. 40:1
Carburetor....................................................................................................................................... Diaphragm, All-Position
Starter............................................................................................................................................................... Auto Rewind
Muffler..................................................................................................................................................... Baffled with Guard
Throttle............................................................................................................................................... Manual Spring Return
Fuel Tank Capacity....................................................................................................................................... 13 oz. (384 ml)
Drive Shaft Housing .......................................................................................................................... Steel Tube, EZ-Link™
Throttle Control ........................................................................................................................................ Finger-Tip Trigger
Approximate Unit Weight (No fuel, with cutting attachment, shield and D-handle)....................................... 13 lbs. (6 kg)
Cutting Mechanism.................................................................................................. SpeedSpool Dual String Cutting Head
Line Spool............................................................................................................................................. Bump Line Releaser
Line Spool Diameter.............................................................................................................................. 3 inches (76.2 mm)
Trimming Line Diameter ................................................................................................................. 0.095 inches (2.41 mm)
Cutting Path Diameter ........................................................................................................................ 17 inches (43.18 cm)
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