Troybilt TB90BC, 41BDT90C063 Owner’s Manual

TROY:BILT °

2-Cycle Gasoline

Trimmer /

Brushcutter

Model TB9OBC

IMPORTANT:READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon and Washington. AU 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 arresto[, maintained in effective working order, or the engine be constructed, equipped and
maintained for the prevention of fire, Check with your state or IocaI 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, Accessory Part 791-

180890 Spark Arrestor Screen is available by contacting the service department at Troy-Bilt LLC, P.O. Box 361131 Cleveland, Ohio 44136-0019.

TROY-BILT LLC, P.O. BOX 361131, CLEVELAND, OH 44136-0019

PIN 792-10820 (01/02 rev. PO0)

PRINTED IN USA

Content Page

Calling Customer Support ................................................. 2

Rules for Safe Operation ................................................ 3

Know Your Unit ........................................................... 7

Assembly Instructions ................................................ 8

Oil and Fuel Information .................................................... 12

Starting/Stopping Instructions .............................................. 13

Operating Instructions ............................................. 14

Maintenance and Repair Instructions ......................................... 17

Accessories and Replacement Parts ......................................... 22

Cleaning and Storage ...................................................... 23

Troubleshooting Chart ..................................................... 24

Specifications ............................................................ 25

Warranty Information ...................................................... 28

This Operator's Manual is an important part of your new Trimmer/Brushcutter. 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 ........

• You can locate the model number by looking at the underside of the engine. A sample model plate is
explained below. For future reference, please copy the mode ! number and the seria ! number of the equipment

in the space below

Serial Humber Model/Parent Part Number

Copy the mode! / parent part

number here:

IlllllllllllllllllllllHIllllHIlllllll

MADE IN U.S.A.

If you have difficulty assembling this product or have any questions regarding the controls, operation or

Call 1, [phone] or 1- [phone] to reach a Customer Support representative. Please have

_'_ your unit's model number and serial number ready when you call. See previous section t° locate this

information. You will be asked to enter the serial number in order to process your call.

2

Copy the serial number here:

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

SAFETY ALERT SYMBOL: 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.

NOTE: Advises you of information or instructions vital

to the operation or maintenance of the equipment.

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.

WARNING: 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.

may result in property damage or personal
injury to yourself or to others. Always follow

l_, AUTION: Failure to obey a safety warning

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 so can result in personal

injury to the operator and bystanders, as well as
damage to the unit.

• Use only 0.105 inch (2.667 mm) diameter genuine
Troy-Bilt LLC replacement line. Never use metal-
reinforced line, wire, or rope, etc. These can break off

and become a dangerous projectile.

• 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 which 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 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 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.

SAFETY WARNINGS FOR GAS TRIMMERS
WARNING: Gasoline is highly flammable, and its vapors

can explode if ignited. Take the following precautions:

• 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 area outdoors
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.

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 area outdoors.

• Wear safety glasses or goggles that are marked as
meeting ANSI Z87.1 standards, and ear/hearing

protection when operating this unit. Wear a face or
dust mask if the operation is dusty.

3

• Wear heavy, long pants, boots, gloves and a long
sleeve shirt. 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, gear housing or muffler.

These parts get extremely hot from operation. When
turned off they remain hot for a short time.

• Do not operate the engine faster than the speed
needed to cut, trim or edge. Do not run the engine at

high speed when 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 manufacturer's replacement parts and
accessories for this unit. These are available from

your authorized service dealer. Use of any non Troy-Bilt

LLC 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

WHILE OPERATING WITH CUTTING BLADE

• Read and understand all safety warnings before
operating this unit

• Always use the shoulder harness when using the
brush blade accessory.

• Keep the J-handle between the operator and cutting
attachment or blade at all times

• NEVER cut with the cutting blade located over 30
inches (76 cm) or more above the ground level

• Blade thrust may occur when the sp_nn_ngblade
contacts an object that it does not immediately cut.

Blade thrust can be violent enough to cause the unit
and/or operator to be propelled in any direction and

possibly lose control of the unit. Blade thrust can
occur without warning if the blade snags, stalls o/

binds. This is more likely to occur in areas where it is
difficult to see the material being cut.

• For operation with the brush blade, do not cut
anything thicker than 1/2 inch or a violent kickback

could occur.

• Do not attempt to touch or stop the blade when it is
rotating.

• A coasting blade can cause injury while _tcontinues to
spLnafter the engine _sstopped or the throttle trigge_

is released. Maintain 3roper control until the blade has

completely stopped rotating.

• Do not run the unit at high speed when not cutting.

• If you strike or become entangled with a foreign
object, stop the engine immediately and check for
damage. Have any damage repaired before attempting

further operations. Do not operate unit with a bent,
cracked or dull blade. Discard blades that are bent,

warped, cracked or broken.

• Do not sharpen the cutting blade. Sharpening the
blade can cause the blade tip to break off while in use.
This can result in severe personal injury. Replace the

blade.

• Do not use the cutting blade for edging or as an
edger, severe personal injury to yourself or others can

occur. Use the cutting blade only for the purpose as
described in this manual.

• Stop the engine IMMEDIATELY if you feel excessive
vibration. Vibration is a sign of trouble. Inspect

thoroughly for loose nuts, bolts or damage before
continuing. Repair or replace affected parts as

necessary.

• Clean cutting blades with a household cleaner to

remove any gum buildup. Oil the blade with machine

0il tO prevent rust.

• Lock up and store the cutting blade in an appropriate

area to protect the blade from unauthorized use or

damage.

4

L

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.

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

• 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.

• 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 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

• WEAR EYE AND HEARING PROTECTION
WARNING: Thrown objects and loud noise can cause severe eye injury and hearing loss.

Wear eye protection meetingANSI Z87.1 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.

5-7x • PRIMER BULB

Push primer bulb, fully and slowly, 5 to 7 times.

• UNLEADED FUEL
Always use clean, fresh unleaded fuel.

5

SYMBOL MEANING

• OIL

Refer to operator's manual for the proper type of oil.

• THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY

//

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, gear housing 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.

WARNING: Do not operate without the cutting attachment shield in place.

• BRUSHCUTTERS • Replace dull blade.
Do not sharpen the cutting blade. Sharpening the blade can cause the blade tip to

break off while in use, This can result in severe personal injury.

° TRIMMER/BRUSHCUTTER SAFETY
WARNING: Thrown objects and rotating cutter can cause severe injury. Keep bystanders,

especially children and pets, at least 50 feet (15 m.) away from the cutting area. The cutting
attachment shield must be used when using the trimmer cutting attachment.

6

APPLICATIONS
As a trimmer:

Cutting grass and light weeds.

Edging.
Decorative trimming around trees, fences, etc.

As a brushcutter;

Cutting weeds and light bush of up to 1/2 inch in
diameter.

Other optional accessories may be used with the
TB90BC. See list of add-ons on page 14.

On/Off Stoic

Shoulder Strap

Fuel Cap

\\\

\\\

Starter Rope Grip

Shaft Grip

Throttle

Lock-C

Throttle

Control

Brush
Blade

Gear Housing

Blade Shield /

Shield Mount

Shaft

Housing

\

\

EZ.Link TM

\\

\

\

\

\

Cutting Attachment

\

Shield

Spark Plu!

Engine Stand

J-Handk

EZ-Start TM

Lever

Air Filter/Muffler

Cover

\ Muffler

\

\,

Primer Bulb

Cutting Attachment

Line Cutting Blade

7

INSTALLING AND ADJUSTING THE J-HANDLE

1. Place the J-handle between the top and middle
clamp pieces (Fig. 1).

6. While holding the unit in the operating position
(Fig. 3), position the J-handle to the location

that provides you the best grip.

7. Tighten the clamp screws evenly, until the J-handle
is secure.

INSTALLING THE HARNESS

when using the cutting blade to avoid serious I

WARNING:AlWaysusethesh°ulderharnessIj

personal injury.

Top Clamp

Middle Clamp

Bottom Clamp J

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 J-handle the 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).

Decal

1. Push the strap through the center of the buckle.

2. Pull the strap over the cross bar and down through
the slot in the buckle (Fig. 4).

Fig. 4

3. Put the harness on over head and onto shoulder.

Snap it on to the support fitting (Fig. 5).

\

\ Support Fitting

Fig. 2

Fig. 5

4. Adjust length to fit the operator's size. Pull tab to

lengthen, pull strap to shorten (Fig 6).

\\

\

Fig. 3

Fig. 6

8

REMOVING AND INSTALLING CUTTING

ATTACHMENT SHIELD

Remove the cutting attachment shield when using

the unit as a brushcutter.

WARNING: The cutting attachment shield

should NOT be installed when operating the
unit with a blade. Remove the cutting

attachment shield before removing or
installing the blade.

Remove the cutting attachment shield from the shield
mount by removing the three (3) screws with a flat blade

screwdriver (Fig. 7). Store parts for future use.

Shaft BushingHole _

\, /

• \

_ _ Output Shaft

I _ Bushing

Locking Rod f _ _

Output Shaft

Cutting

Attachment

Shield

Fig. 7

Screws

Gear Housing

Install the cutting attachment shield when using the

unit as a grass trimmer.

the cutting attachment shield SHALL be in

[_lb ARNING: To avoid serious personal injury,

place at all times while operating the unit as
a grass trimmer.

Install the cutting attachment shield on the shield mount
by inserting the three (3) screws into the shield mount.

Tighten securely with a flat blade screwdriver (Fig. 7).

REMOVE THE CUTTING ATTACHMENT AND
INSTALL THE CUTTING BLADE

NOTE: To make removing or installing the cutting blade

or cutting attachment easier, place the unit on
the ground or on a work bench.

Remove the Cutting Attachment Shield
See Removing and Installing Cutting Attachment Shield,.

Remove the Cutting Attachment

Fig. 8

2.

Hold the locking rod in place by grasping it next to

the boom of the unit (Fig. 9).

3.

While holding the locking rod, remove the cutting
attachment by turning it clockwise off of the output
shaft (Fig. 10). Store the cutting attachment for future

use.

NOTE: The blade retainer under the cutting attachment

will be used when installing the cutting blade.

Fig. 9

Cutting Attachment

use and can result in injury to the operator.
When the unit is turned off it remains hot for

I_lb ARNING: The gear housing gets hot with

a short time. Do not touch the gear housing
until it has cooled.

I. Align the shaft bushing hole with the locking rod slot

and insert the locking rod into the shaft bushing hole
(Fig. 8).

Locking Rod

Slot

Locking Rod

Fig. 10

9

T_

Install the Cutting Blade

_ ARNING: To avoid serious personal injury,

4. Place the cutting blade on the output shaft bushing

5. Make sure that the cutting blade is centered on the

,_, WARNING: If the cutting blade is off-center, 1

always wear gloves while handling or
installing the blade

(Fig. 11).

pilot step and sitting flat against the output shaft
bushing (Fig. 12).

the unit will vibrate, and the blade may fly
off, which can cause serious personal injury. J

Blade Retainer

Nut

Cutting

Blade

Shield

Mount

P.ot

.

Align the shaft bushing hole with the locking rod
slot and insert the locking rod into the bushing hole
(Fig. 8, Pg. 9).

7.

Put the blade retainer and nut on the output shaft.
Make sure that the blade is installed correctly.

8.

Tighten nut counterclockwise against the blade while
holding the locking rod;

• If using a torque wrench and an 5/8 inch socket tighten

to: 325 - 335 in,lb, 27 - 28 ft.,lb, 37 - 38 N,m.

• Without a torque wrench, use a 5/8 inch closed-end or

socket wrench, turning the nut until the blade retainer
is snug against the shaft bushing. Make sure that the
blade is installed correctly, then rotate the nut an
additional 1/4 to 1/2 turn counterclockwise (Fig. 13).

9. Remove the locking rod from the locking rod slot.

or damage to the unit, do not start or

I_, ARNING: To avoid serious personal injury

operate this unit with the locking rod in the
locking rod slot.

]

Fig. 11

Fig. 12

Pilot Step

Sharpening the blade can cause the blade tip |

I_ WARNING: Do not sharpen the cutting blade.|

REMOVE THE CUTTING BLADE AND INSTALL
THE CUTTING ATTACHMENT

Remove the Cutting Blade

iA 1

1.

2.

to break off while in use. This can result in |
severe personal injury. Replace the blade. J

always wear gloves while handling or
installing the blade.

Align the shaft bushing hole with the locking rod
slot and insert the locking rod into the bushing hole

(Fig. 8, Pg. 9).
Hold the locking rod in place by grasping it next to

the boom of the unit (Fig. 14).

1/4-1/2 turn

Counterclockwise Clockwise

Fig. 13 Fig. 14

10

3. Whileholdingthelockingrod,loosenthenuton
thebladebyturningitclockwisewitha5/8inch
closed-endorsocketwrench(Fig.14).

4. Removethenut,bladeretainer,andblade.Storethe
nutandbladetogetherforfutureuseina secure

place.Storeoutofreachofchildren.

Installthe Cutting Attachment

5. Align the shaft bushing hole with the locking rod slot
and insert the locking rod into the shaft bushing hole.

(Fig. 8, Pg. 9). Place the blade retainer on the output
shaft with the flat surface against the output shaft

bushing as shown in Fig. 15. Screw the cutting
attachment counterclockwise onto the output shaft.
Tighten securely.

NOTE: The blade retainer must be installed on the

output shaft in the position shown for the cutting
attachment to work correctly.

6. Remove the locking rod.

7. Install the cutting attachment shield. See Removing
and Installing Cutting Attachment Shield, Pg. 9.

Cutting Attachment

Blade Retainer

Output Shaft

Bushing

Locking Rod

Fig. 15

WARNING: To avoid serious personal injury,

the cutting attachment shield SHALL be in
place at all times while operating the unit as

a grass trimmer.

11

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 fresh fuel mix per 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.

Thoroughly mix the proper ratio of 2-cycle engine oil with
unleaded gasoline in a separate fuel can. Use a 32:1

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 4 oz. (120 ml.) bottle of Troy-Bilt 2 Cycle
oil makes a 32:1 fuel/oil ratio.

UNLEADED GAS

1 US. GALLON

(3.8 LITERS)

1 LITER

TROY-BILT 2 CYCLE OIL

+ 4.0 FL OZ.

(120 ml)

+ 30 ml

Using Fuel Additives

The bottle of Troy-Bilt 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 only Troy-Bilt 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.

CAUTION: 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.

MIXING RATIO - 32:1

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

I_, ARNING: Add fuel in a clean, well

NOTE: Dispose of the old fuel/oil mix in accordance to

injury from fuel spray. Never operate the unit
without the fuel cap securely in place.

ventilated area outdoors. Wipe up any spilled
fuel immediately. Avoid creating a source of

ignition for spilt fuel. Do not start the engine
until fuel vapors dissipate.

Federal, State, and Local regulations.

12

STARTING INSTRUCTIONS

Start/On (I) On/Off Stop Control

ventilated area outdoors. Carbon monoxide

[_, WARNING: Operate this unit only in a well-

1. Mix gas with oil. Fill fuel tank with fuel/oil mixture.

2. Put the On/Off Stop Control in the ON (I) position

3. Fully press and release primer bulb slowly 5 to 7

4. Push the EZ-Start rM Lever to the left until it clicks and

5. With the unit in the starting position (Fig. 18). DO NOT

NOTE: When starting, the EZ-Start TM Lever will

exhaust fumes can be lethal in a confined area.

WARNING: Avoid accidental starting. Be in
the starting position when pulling the starter

rope (Fig. 9). The operator and unit must be
in a stable position while starting to avoid

serious personal injury.
Avoid serious personal injury, ensure any

Add-On being used is installed correctly
and secure before starting unit.

See Oil and Fuel Mixing Instructions Pg. 12.

(Fig. 16).

times. Fuel should be visible in the bulb (Fig. 17).

If fuel is not visible, press three (3) more times, or

until it is.

locks into place. (Fig. 17).

SQUEEZE THE THROTTLE CONTROL. Pull the
starter rope briskly 5 times in the with the EZ-Start rM

lever pushed to the left. If the engine starts to run
before the fifth pull, proceed to step 7.

automatically click off when the throttle control is
squeezed.

Throttle Lock-Out

O) -

/

/

Throttle C_rol

Fig. 16

Primer Bulb

\

EZ-Start TM

Lever

Fig. 17

NOTE: If the engine floods while trying to start. Squeeze

the throttle control (Fig. 16). Pull the starter rope

briskly. The engine should start within three (3) to

eight (8) pulls.

6. Squeeze the throttle control to warm up engine for 5
to 10 seconds. Ez-Start rM Lever will click off

automatically (Fig. 17).

NOTE: If enige stalls while squeezing trigger, continue to

squeeze trigger and pull starter rope until the
trimmer starts. (Fig. 18)

NOTE: Choking is unnecessary when starting a warm

engine. Put the On/Off Stop Control in the ON

position (Fig. 3), squeeze the throttle and pull the

starter rope briskly. (Fig. 18).

STOPPING INSTRUCTIONS

1. Release your hand from the throttle control (Fig. 18).
Allow the engine to cool down by idling.

2. Put the On/Off Stop Control in the OFF (O) position
(Fig. 16).

Starter Rope

Throttle Control /

Fig. 18

13

OPERATING THE EZ-LINK TM SYSTEM

The EZ-Link TM system enables the use of these
optional add-ons.

Blower/Vacuum .......................... BV720r

Cultivator ............................... GC720r

Edger .................................. LE720r

Hedge Trimmer .......................... HS720r

Snow Thrower ........................... ST720r

Straight Shaft Trimmer ..................... SS725r

Sweeper/Blower .......................... SB720r

Tree Pruner .............................. TP720r

Turbo Blower ............................ TB720r

2. While firmly holding the add-on, push it straight into
the EZ-Link TM coupler (Fig. 20).

NOTE: Aligning the release button with the guide recess

will help installation (Fig. 19).

EZ-LinkTMCoupler ReleaseButton

Upper Shaft Housing Lower Shaft Housing

_, WARNING: Read and understand operator's

Removing the Cutting Attachment or Add-Ons:

1. Turn the knob counterclockwise to loosen (Fig. 19).

2. Press and hold the release button (Fig. 19).

3. While firmly holding the upper shaft housing, pull

Installing the Cutting Attachment or Add-Ons:

,_ WARNING: To avoid serious personal injury

NOTE: To make installing or removing the add-on easier,

I. Turn knob counterclockwise to loosen (Fig. 21).

manual for add-on prior to operation.

the cutting attachment or add-on straight out of the

EZ-Link TM coupler (Fig. 20).

and damage to the unit, shut unit off before
removing or installing add-ons,

place the unit on the ground or on a work bench.

EZ-LinkT M Coupler Release Button

Fig.20

3. Turn the knob clockwise to tighten (Fig. 21).

_ll AUTION: Lock the release button in the

90°Edging Hole

primary hole and securely tighten the knob
before operating this unit.

(Trimmer only)

Fig. 21

CAUTION: The cutting attachment and
add-ons with the EZ-Link TM 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.

Hole

14

Fig. 19

\

Guide Recess

For edging when using the line head cutting attachment

with EZ-Link TM models, lock the release button of the
cutting attachment into the 90 ° edging hole or the 180°

edging hole (Fig. 21).

edging or as an edger, severe personal injury

[,_ WARNING: Do not use the cutting blade for |

to yourself or others can occur.

I

I

L 1

HOLDING THE TRIMMER

Each time the head is bumped, about 1 inch (25.4 ram.)
of trimming line is released. A blade in the cutting
attachment shield will cut the line to the proper length if

I,_ ARNING: Always wear eye, hearing, foot,

of injury when operating this unit.

Before operating the unit, stand in the operating position

(Fig. 22). Check for the following:

The operator is wearing eye protection and proper
clothing.

The right arm is slightly bent, and the hand is holding
the shaft grip.

body protection and strap to reduce the risk

excess line is released.
For best results, tap the Bump HeadTM on bare ground

or hard soil. If line release is attempted in tall grass, the
engine may stall. Always keep the trimming line fully

extended. Line release becomes more difficult as the
cutting line becomes shorter.

NOTE: Do not rest the Bump Head TM on the ground

while the unit is running.

The left arm is straight, and the hand is holding the
J-handle.

The unit is at waist level.

i& AUTION: Do not remove or alter the line

The cutting attachment is parallel to the ground and

cutting blade assembly. Excessive line length
will make the clutch overheat. This may lead

to serious personal injury or damage to the
unit.

easily contacts the vegetation to be cut without the
operator having to bend over.

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

Fig. 22

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. 23) while operating the trimmer at high

speed.

NOTE: Always keep the trimming line fully extended.

Line release becomes more difficult as cutting

line becomes shorter

'\

\

\

top to bottom in small increments to avoid

premature line wear or engine drag.
Cut from left to right whenever possible. Cutting to

the right 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 previous trimming techniques
What vegetation is being cut
Where it's being cut

For example, the line will wear faster when trimming
against a foundation wall as opposed to trimming

around a tree.

Fig. 23

15

DECORATIVE TRIMMING

Decorative trimming is accomplished by removing all

vegetation around trees, posts, fences, etc.

Rotate the whole unit so that the cutting attachment is at

a 30°angle to the ground (Fig. 24).

Fig. 24

USING THE CUTTING BLADE

_i WARNING: Always wear eye, hearing, foot,

_ ARNING: Do not use the cutting blade for

Before operating the unit with the cutting blade stand in

the operating position (Fig. 25).

Cutting Blade Operating Tips:

To establish a rhythmic cutting procedure:

• Plant feet firmly, comfortably apart.

• Bring the engine to full throttle before entering the
material to be cut. The blade has maximum cutting

power at full throttle and is less likely to bind, stall, or

cause blade thrust, which can result in serious

personal injury to the operator or others.

body protection and the strap to reduce the
risk of injury when operating this unit.

edging or as an edger, severe personal injury
to yourself or others can occur.

_1= ARNING: The blade continues to spin after I

the engine is turned off. The coasting blade

can ser ous y cut you facc denta y touched.

• Swing the unit in the same direction as the blade
spins, which increases the cutting action.

• Move forward to the next area to be cut after the
return swing and plant feet again.

• ]-he cutting blade is designed with a second cutting

edge, which can be used by removing the blade,

turning it upside down, and reinstalling it.

_i, WARNING: Do not sharpen the cutting

blade. Sharpening the blade can cause the
blade tip to break off while in use. This can

result in severe personal injury to yourself or
others. Rep ace the bade

To reduce the chance of material wrapping around the

blade follow these steps:

• Cut at full throttle

• Swing the unit into material to be cut from your ngnt to
your left (Fig. 26]

• Avoid the material _ustcut as you make the return
swing.

WARNING: Do not clear away cut material

with the engine running or blade turning. To

i avoid serious personal injury, turn off engine.

Allow the blade to stop before removing

materials wrapped around the blade shaft. ]

,_ WARNING: Blade thrust may occur when the

• Cut while swinging the upper part of your body from
right to left.

• Always release the throttle trigger and allow the engine

to return to idle speed when not cutting.

• When done, always unsnap unit from harness before

taking harness off.

16

spinning blade contacts an object that it
does not immediately cut. Blade thrust can

be violent enough to cause the unit and/or
operator to be propelled in any direction, and
possibly lose control of the unit. Blade thrust

can occur without warning if the blade snags,
stalls or binds. This is more likely to occur in

areas where it is difficult to see the material
being cut.

!i

Fig. 25

Fig. 26

NOTE: Some maintenance procedures may require

special tools or skills. Ifyou are unsure about
these procedures take your unit to an authorized

service dealer.

MAINTENANCE SCHEDULE
These required maintenance procedures should be

performed at the frequency stated in the table. They

should also be incluaed as part of any seasonal tune-up.

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 Eost RPM, poor
performance orgeneral lack or acceleration, this service

may be required_ If you feel your engine is need of this

,_ 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.

inspection, refer service to an authorized servicing
dealer, or establishment for repair. DO NOT attempt to

perform this process yourself as enqine damage may
result from contaminants envolvea in the cleaning

process for the port.

FREQUENCY MAINTENANCE REQUIRED REFER TO:

Before Starting Engine Fillfuel tank with correct oil and fuel mixture. Page 12
Every 10 Hours Clean and re-oil air filter. Page 19
Every 25 Hours Check spark arrestor and clean. Page 20

Check spark plug condition and gap. Page 22

Every 50 Hours Inspect exhaust port and spark arrestor screen for clogging Page 20

or obstruction to assure maximum performance levels.

LINE INSTALLATION Winding the Existing Inner Reel

This section covers both SplitLine TM and standard single

line installation.

Always use geniune Troy-Bilt rM0.105 in. (2.667 mm)
replacement line. Line other than specified may make the

engine overheat or fail.

wire, chain, or rope, etc. These can break off

[,_ ARNING: Never use metal-reinforced line,

and become dangerous projectiles.

1. Hold the outer spool with one hand and unscrew the
Bump Knob clockwise (Fig. 27). Inspect the bolt

inside the bump knob to make sure it moves freely.
Replace the bump knob if damaged.

2. Remove the inner reel from the outer spool (Fig. 27).

3. Remove spring from the inner reel (Fig. 27).

4. Use a clean cloth to clean the the inner reel, spring,
shaft, and inner surface of the outer spool (Fig. 28).

There are two methods to replace the trimming line.

• Wind the inner reel with new line

• Install a prewound inner reel

Spring

Inner Reel J

Bump Knob_

Fig. 27

Bolt

IndexingTeeth

Fig. 28

Fig. 29

\

\

17

5. Check the indexing teeth on the inner reel and outer
spool for wear (Fig. 29). If necessary, remove burrs or
replace the reel and spool.

NOTE:

SplitLine TM can only be used with the inner reel

with the slotted holes. Single line can be used on
either type of inner reel. Use Figure 30 to identify

the inner reel you have.

NOTE:

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.

For Use with Single

Line ONLY

For Use with SplitLineTM

or Single Line

SplitLine TM Installation

.

Take approximately 20 feet (6.1 m) of new trimming
line. Insert one end of the line through one of the two
holes in the inner reel (Fig. 33). Pull the line through

the inner reel until only about 4 inches is left out.

9. Insert the end of the line into the open hole in the
inner reel and pull the line tight to make the loop as
small as possible (Fig. 33).

10. Before winding, split the line back about 6 inches.

11.

Wind the line in tight even layers in the direction
indicated on the inner reel.

\

Loop

Fig. 30

Single Line Installation
Go To Step 8 for SplitLine TM Installation

6. Take approximately 40 feet (12.2 m) of new trimming
line, loop it into two equal lengths. Insert each end of
the line through one of the two holes in the inner reel
(Fig. 31). Pull the line through the inner reel so that
the loop is as small as possible.

I

Loop

Fig. 31

7. Wind the lines in tight even layers, onto the reel
(Fig. 32). Wind the line in the direction indicated on
the inner reel. Place your index finger between the
two lines to stop the lines from overlapping. Do not
overlap the ends of the line. Proceed to step 11.

Fig. 33

NOTE: Failure to wind the line in the direction indicated

will cause the cutting attachment to operate
incorrectly.

12. Insert the ends of the line into the two holding slots
(Fig. 34).

l

Holding Slots

Fig. 34

18

Fig. 35

Fig. 32

L

13. Insert the ends of the line through the eyelets in the
outer spool and place inner reel with spring inside the

outer spool (Fig. 35). Push the inner reel and outer
spool together. While holding the inner reel and outer

spool, grasp the ends and pull firmly to release the
line from the holding slots in the reel.

NOTE: The spring must be assembled on the inner reel

before reassembling the cutting attachment.

14. Hold the inner reel in place and install the bump knob
by turning counterclockwise. Tighten securely.

INSTALLING A PREWOUND REEL

1. Hold the outer spool with one hand and unscrew the
bump knob clockwise (Fig. 15, Pg. 11). Inspect the

bolt inside the bump knob to make sure it moves
freely. Replace the bump knob if damaged.

2. Remove the old inner reel from the outer spool
(Fig. 27).

3. Remove the spring from the old inner reel
(Fig. 27).

4. Place the spring in the new inner reel.
NOTE: The spring must be assembled on the inner reel

before reassembling the cutting attachment.

5. Insert the ends of the line through the eyelets in the

outer spool (Fig. 35, Pg. 18).

8. Place the new inner reel inside the outer spool. Push

the inner reel and outer spool together. While holding
the inner reel and outer spool, grasp the ends and

pull firmly to release the line from the holding slots in
the spool.

7. Hold the inner reel in place and install the bump knob

by turning counterclockwise. Tighten securely.

Replacement Parts:

See Accessories / Replacement Parts on page 22.

Lever

Screws

Screws

Fig. 36

Cleaning the Air Filter

i_ WARNING: To avoid serious personal injury,

always turn your trimmer off and allow it to cool I
before you clean or do any maintenance on it. J

Clean and re-oil the air filter every 10 hours of operation.
It is an important item to maintain. Not maintaining the air

filter will VOID the warranty.

1. Remove air filter/muffler cover. See Removing the
Air FilterlMuffler 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. 37).

AIR FILTER MAINTENANCE

Removing the Air FUter/Muffler Cover

i_ll 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.

1. Remove the four (4) screws securing the air
filter/muffler cover (Fig. 36). Use a flat blade or

T20 Torx bit screwdriver.

2. Push slightly up and then pull the cover from the
engine. Do not force.

Air Filter

F;Insi'lde I_luff;:r C:v_r

Fig. 37

,

Wash the filter in detergent and water (Fig. 38).
Rinse the filter thoroughly. Squeeze out excess
water. Allow it to dry completely.

/

Fig. 38

19

4. ApplyenoughcleanSAE30oiltolightlycoatthe
filter(Fig.39).

Fig. 39

5. Squeeze the filter to spread and remove excess oil
(Fig. 40).

/

Fig.40

6. Replace the air filter inside the air filter/muffler cover
(Fig. 37, Pg. 20).

NOTE: Operating the unit without the air filter and air

filter/muffler cover assembly, will VOID the
warranty.

Reinstalling the Air fUter/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. 36, Pg. 20) and tighten.

Do not over tighten.

SPARK ARRESTOR MAINTENANCE

1. Remove air filter/muffler cover. See Removing the
Air FilterlMuffler Cover.

Spark Exhaust

Arrestor Gasket

\

I

Muffler - Front Side Muffler - Back Side

Fig. 41

.

Reinstall the spark arrestor by pressing it into the
recessed hole on muffler's back side. Make sure it

fits tightly against the muffler and is not raised up.

7.

Place exhaust gasket against muffler's back side.
Align exhaust gasket bolt holes with bolt holes in

muffler. While holding exhaust gasket in place, insert
bolts into muffler's front side. (Fig. 41).

.

Place muffler with exhaust gasket in place and bolts
inserted against the engine, aligning bolt holes.
Tighten bolts to secure muffler to the engine.

If using a torque wrench torque to:

80-90 in..Ib. (9-10.2 N.m).

_ WARNING: If muffler is not tightenedsecurely, it could fall off causing damage to

the unit and possible serious personal injury.

9. Reinstall air filter/muffler cover.

2. Locate muffler front and the two [2j bolts securing it
to the engine. (Fig 41). Remove the two [2) bolts
usLng a flat blade screwdriver or 5/16-inch socket or
nut dnver. Pull muffler off of the engine.

3. Turn muffler over to the back side and locate the
exhaust gasket. Remove the muffler gasket from the

muffler (Fig. 41L

NOTE: If exhaust gasket is torn or damaged, replace

with a new gasket before reassembling muffler.

4. Using a small flat blade screwdriver, carefully pry up
the spark arrestor from the recessed hole (Fig. 42).

Remove spark arrestor from muffler.

5. Clean the spark arrestor with a wire brush. Replace if
damaged or unable to clean thoroughly (Fig. 42).

2O

Spark

Arrestor

_Flat blade

Screwdriver

\

Spark Arrestor

Muffler -Back Side

Fig. 42

CARBURETORADJUSTMENT

The idle speed of the engine is adjustable through the
Air Filter/Muffler cover (Fig. 43).

NOTE: Careless adjustments can seriously damage your

unit. An authorized service dealer should make
carburetor adjustments.

Check Fuel Mixture
Old and/or improperly mixed fuel is usually the reason for

the unit not running properly. Drain and refill the tank with
fresh, properly mixed fuel prior to making any adjustments.

Refer to Oil and Fuel Information Pg. 12.

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 Pg. 19.

AdJust Idle Speed Screw

_ ARNING: The cutting attachment may be

spinning during idle speed adjustments.
Wear protective clothing and observe all

safety instructions to prevent serious

persona njury.

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 5
minutes to warm up. See Starting/Stopping
Instructions, Pg. 13.

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. 43). Turn the idle speed screw in, clockwise,

1/8 of a turn at a time (as needed) until the engine

idles smoothly.

\

|

Idle Speed Screw

/

/

/

Fig. 43

NOTE: The cutting attachment should not rotate when

the engine idles.

.

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 screw should solve most engine

problems.

If not and:

• 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.

WARNING: When the unit is turned off
make sure the cutting attachment has

i"

stopped before the unit is set down to
prevent serious personal injury,

21

REPLACING THESPARKPLUG

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.

0.020 in.

(0.5;_ _mm)

3. Replace cracked, fouled or dirty spark plug. Set the
air gap at 0.020 in. (0.5 ram) using a feeler gauge
(Fig. 44).

,_ CAUTION: Do not sand blast, scrape, or

clean electrodes. Grit in the engine could
damage the cylinder.

4. Install a correctly gapped spark plug in the cylinder
head. Tighten by turning 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. 44

ACCESSORIES/REPLACEMENT PARTS

2-Cycle Oil .......................... 791-147543

Spark Plug ......................... 791-610311B

Exhaust Gasket ....................... 791-182065

Spark Arrestor ........................ 791-182747

Replacement Line ............... 0.105in ( 2,66mm )

Replacement Line Cartridge ............... 753-1160

Inner Reel Spring .................... 791-610636B

Outer Spool ......................... 791-683301

Inner Reel ........................... 791-147495

Bump Knob ........................ 791-180814B

Fuel Cap ........................... 791-180000B

Shoulder Strap ...................... 791-682075B

These replacement parts can be purchased from your
local authorized dealer.

22

CLEANING

always turn your trimmer off and allow it to cool

I_lb WARNING: TOavoid serious personal injury,

before you clean or do any maintenance 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.

• 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.

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 and drain 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.

.

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 for any loose
or damaged parts. Repair or replace damaged parts

and tighten loose screws, nuts or bolts. The unit is
ready for storage.

.

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 fuel from unit.

• Tighten fuel cap before transporting.

23

CAUSE

On/Off Stop Control is in OFF position
Empty fuel tank

Primer bulb wasn't pressed enough
Engine flooded

Old or improperly mixed fuel
Fouled spark plug

Plugged spark arrestor

ACTION

Turn On/Off Stop Control to ON

Fill fuel tank with properly mixed fuel
Press primer bulb fully and slowly 5-7 times

Use starting procedure with EZ-Start LeverTM
in the RUN position, Pg. 13

Drain gas tank I Add fresh fuel mixture
Replace or clean the spark plug
Clean or replace spark arrestor

CAUSE

Air Filter is Plugged

Old or improperly mixed fuel
Improper carburetor adjustment

CAUSE

Old or improperly mixed fuel
Improper carburetor adjustment

Cutting attachment bound with grass
Dirty air filter
Plugged spark arrestor

CAUSE

Old or improperly mixed fuel
Improper carburetor adjustment

Fouled spark plug
Plugged spark arrestor

ACTION

Replace or clean the air filter
Drain gas tank / Add fresh fuel mixture

Adjust per instruction Pg. 21

ACTION

Drain gas tank / Add fresh fuel mixture
Take to an authorized service dealer for
carburetor adjustment

Stop the engine and clean the cutting attachment

Clean or replace the air filter

Clean or replace spark arrestor Pg. 20

ACTION

Drain gas tank / Add fresh fuel mixture
Take to an authorized service dealer for

carburetor adjustment

Replace or clean the spark plug

Clean or replace spark arrestor Pg. 20

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

If further assistance is required, contact your authorized service dealer.

24

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 the line

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

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 - 3,600 rpm

Operating RPM (Trimmer) ......................................................... 6,100 - ]0,400 rpm

Operating RPM (Brushcutter) ....................................................... 8,200 - 9,600 rpm

Ignition Type ........................................................................... Electronic

Ignition Switch ............................................................... Momentary Flip Switch

Spark Plug Gap .................................................................. 0.020 in. (0.5 mm)

Lubrication ....................................................................... Fuel/Oil Mixture

Fuel/Oil Ratio ............................................................................... 32:1

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 ........................................................... Steel Tube, EZ-Link TM

Throttle Control ....................................................... Finger-Tip Trigger with Lock-Out

Unit Weight (No fuel, with cutting attachment, cutting attachment shield and J-handle) ........... 14 Ibs. (5.23 kg)

Cutting Mechanism ....................................... 4-Tooth Cutting Blade, Dual String Cutting Head

Line Spool .................................................................... Bump Line Releaser

Line Spool Diameter ............................................................. 4 inches (101.6 mm)

Trimming Line Diameter ......................................................... 0.105 inch (2.66 mm)

Cutting Path Diameter, Cutting Attachment ........................................... 18 inches (45.7 cm)

Cutting Path Diameter, Cutting Blade ................................................. 8 inches (204 mm)

Shoulder Harness ................................................................ Single Quick-Snap

25

26

California / EPA Emission Control Warranty Statement;

Your Warranty Rights and Obligations

The California Air Resources Board, EPA (Environmental Protection Agency), and TROY-BILT LLC (TROY-BILT) are

pleased to explain the emission Control System Warranty on your 2000 and later small off-road engine. In California and
the 49 states, new small off-road engines must be designed, built and equipped to meet the state's stringent anti-smog

standards. TROY-BILT 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-injection system, the ignition system, and

catalytic converter. Also included may be hoses, belts, connectors and other emission-related assemblies.
Where a warrantable condition exists, TROY-BILT will repair your small off-road engine at no cost to you including

diagnosis, parts and labor.
The 2000 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 by TROY-BILT.

Owner's 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. TROY-BILT recommends that you retain all receipts covering maintenance on your small off-road
engine, but TROY-BILT 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 should however be aware that TROY-BILT 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 TROY-BILT authorized service center as soon as

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 1-866-840-6483

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 and replacement of warranted part will be performed at no charge to the owner at an authorized TROY-BILT

service center. For the nearest location please contact TROY-BILT at: 1-866-840-6483.

• Any warranted part which is not scheduled for replacement, as required maintenance or which is scheduled only for

regular inspection to the effect of "Repair or Replace as Necessary" is warranted for the 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 TROY-BILT 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 TROY-BILT Service Center. Warranty service or repairs will be

provided at all authorized TROY-BILT Service Centers.

• Any manufacturer approved replacement p[art 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.

27

MANUFACTURER'S LIMITED WARRANTY FOR:

0 TRO_ B!_Lr

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 [phone] or 1 [phone] or write to P.O.

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

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 [phone]

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

28

Troy-Bilt LLC

nO. Box 361131

Cleveland, OH 44136-0019