Troy-Bilt TB42 Owner's Manual

IMPORTANT: READ THE OPERATOR’S MANUAL THOROUGHLY AND FOLLOW THE SAFE OPERATION PRACTICES WHILE OPERATING THE UNIT.

Primer

ulb

emoving Unit From Carton

Assemble The Unit

Starting The Unit

ssemble The Unit

Mix thoroughly in separate fuel can:

– 3.2 fl. oz. of 2-cycle

ngine oil

– 1 gallon of unleaded

gasoline

NOTE: Do not mix directly in

fuel tank.

Place unit on a level surface. Fill fuel tank.

Press primer bulb 10 times, or until fuel is visible

Crouch in starting position. SQUEEZE and HOLD

throttle for ALL further steps.

Pull rope 5 times. Move choke lever to

Position 2 and squeeze

throttle.

Pull rope 3-5 times to start engine. Run unit for 30-60

seconds to warm up.

Continue to squeeze throttle. Move choke lever to Position 3.

emove all contents from

he carton.

4 5 6

18 9

Move choke lever to Position 1.

Continue to squeeze throttle. Run unit for an additional 60 seconds to

omplete warm-up. Unit may be used during this time.

tarting The Unit

0 X

5 X

3-5 X

hoke Lever

tarter Rope

uel Cap

Throttle Control

n/ Off Switch

J-Handle

z-Link™

Cutting Head Shield

Need Help?

Call 1-800-828-5500

Electric Starter or

ower Start Bit Optional!

THESE OPTIONAL ACCESSORIES

ARE SOLD SEPARATELY!

This unit has an alternate starting method t

hat many find easier to use than pulling a

rope. Please contact a local retailer or call

1-800-828-5500 for more information.

Information may also be found at

www.troybilt.com

DIDN’T START?

epeat these instructions.

F engine fails to start after 2 attempts,

ove choke lever to position 3 and pull

the starter rope until engine starts

F unit still fails to start, refer to operator’s

manual for additional starting and

troubleshooting information

Remove cap from end of lower boom. Push cutting a

ttachment add-on into

oupler. Turn coupler knob

lockwise to tighten.

Gallon 3.2 oz

0:1

hoke Lever

Choke Lever

rrow

Decal

Place the J-handle between the top and middle clamps, s

lide the 4 screws through the clamps, and place the

ssembly onto the bottom clamp. Start the screws, then ensure the arrow/ white line on the decal touches the clamp assembly. Position the J-handle to the location that provides the best grip, then tighten the s

crews evenly until the J-handle is secure.

ASSEMBLY TOOLS REQUIRED:

•

Phillips screwdriver

Operator’s Manual

TB42 BC

2-Cycle Trimmer

English — Page 1

Español — Page 8

NEED HELP? CALL 1-800-828-5500 IN U.S. OR 1–800–668–1238 IN CANADA

769-07387 P01 11/11

TABLE OF CONTENTS

Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Starting and Stopping Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Maintenance and Repair Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Optional Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

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.

SERVICE INFORMATION

DO NOT RETURN THIS UNIT TO THE RETAILER. PROOF OF PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.

For assistance regarding the assembly, controls, operation or maintenance of the unit, please call the Customer Support Department at 1-800-828-5500 in the United States or 1-800-668-1238 in Canada. Additional information about the unit can be found on our website at www.troybilt.com or www.troybilt.ca.

For service, please call the Customer Support Department to obtain a list of authorized service dealers near you. Service on this unit, both within and after the warranty period, should only be performed by an authorized and approved service dealer. When servicing, use only identical replacement parts.

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 grasscovered 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 #753-06418 Muffler Assembly.

RULES FOR SAFE OPERATION

• Never start or run the unit inside a closed room or building. Breathing exhaust fumes can kill. Only operate this unit in a well-ventilated outdoor area.

WHILE OPERATING

• 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.

• 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 and Stopping Instructions.

• Use the right tool. Only use this tool for the purpose intended.

• Use extreme caution when reversing or pulling the unit backwards.

• Do not overreach. Always keep proper footing and balance. Take extra care when working with on steep slopes or inclines.

• Always hold the unit with both hands when operating. Keep a firm grip on the handle.

• Keep hands, face, and feet at a distance from all moving parts.

• Do not touch the engine or muffler. These parts get extremely hot from operation. They remain hot for a short time after turning off the unit.

• Do not operate the engine faster than the speed needed for the job. Do not run the engine at high speed when the unit is not in use.

• Always stop the engine when work is delayed or when walking from one location to another.

• If striking or becomes 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 or repair.

• Use only original equipment manufacturer replacement parts and accessories for this unit. These are available from an authorized service dealer. The use of any unauthorized parts or accessories could lead to serious injury to the user, or damage to the unit, and void the warranty.

• Keep unit clean of vegetation and other materials that may become lodged or entangled in the unit.

• To reduce fire hazard, keep the engine and muffler free from grass, leaves, excessive grease or carbon build up.

After use

• Clean the unit with household cleaner to remove any gum buildup.

OTHER SAFETY WARNINGS

• Never store a fueled unit 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. Keep 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 loaning someone this unit, also loan them these instructions.

RULES FOR SAFE OPERATION

The purpose of safety symbols is to attract attention to possible dangers. The safety symbols, and their explanations, deserve 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:

avoid serious personal injury. May be used in conjunction with other symbols or pictographs.

DANGER:

others. Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

WARNING:

Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

CAUTION:

injury to yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

NOTE:

Advises of information or instructions vital to the operation or maintenance of the equipment.

READ THE OPERATOR’S MANUAL 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 1–800–828-5500 IN U.S. OR 1-800-668-1238 IN CANADA

CALIFORNIA PROPOSITION 65

Indicates danger, warning or caution. Attention is required in order to

Failure to obey a safety warning will result in serious injury to yourself or to

Failure to obey a safety warning can result in injury to yourself and others.

Failure to obey a safety warning may result in property damage or personal

• IMPORTANT SAFETY INSTRUCTIONS •

WARNING: Engine exhaust, som e of its constituents and certain finished components

contain or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.

READ ALL INSTRUCTIONS BEFORE OPERATING

SAVE THESE INSTRUCTIONS

• 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, maintenance, and repair information.

SYMBOL MEANING

• SAFETY ALERT SYMBOL

Indicates danger, warning or caution. May be used in conjunction with other symbols or pictographs.

• READ OPERATOR'S MANUAL

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.

• 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.

• UNLEADED FUEL

Always use clean, fresh unleaded fuel

• OIL

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

• DO NOT USE E85 FUEL IN THIS UNIT

WARNING: It has been proven that fuel containing greater than 10% ethanol will

likely damage this engine and void the warranty.

• ON/OFF STOP CONTROL

ON / START / RUN

• ON/OFF STOP CONTROL

OFF or STOP

WARNING:

instructions before operating the unit in order to ensure the safety of the operator and any bystanders. Please keep these instructions for later use.

• 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 approached, stop the unit 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 UNITS

WARNING:

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 fuel tank cap or add fuel when the engine is hot. Always loosen the fuel tank cap slowly to relieve any pressure in the tank before fueling. Do not smoke.

• Always add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. Do not smoke.

• Never operate the unit without the fuel cap securely in place.

• Avoid creating a source of ignition for spilled fuel. Wipe up any spilled fuel from the unit immediately before starting the engine. Move the unit at least 30 feet (9.1 m) from the fueling source and site before starting the engine. Do not smoke.

When using the unit, all safety rules must be followed. Please read these

Gasoline is highly flammable, and its vapors can explode if ignited. Take the

• CHOKE CONTROL

1. • FULL choke position

2. • PARTIAL choke position

3. • RUN choke position

• KEEP BYSTANDERS AWAY

WARNING: Keep all bystanders, especially children and pets, at least 50 feet (15

m) from the operating area.

• THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY

WARNING: Small objects can be propelled at high speed, causing injury. Keep

away from the rotating rotor.

• HOT SURFACE

WARNING: Do not touch a hot engine. These parts get extremely hot from

operation and may cause severe burns. When the unit is turned off the engine will remain hot for a short time.

• SHARP BLADE

WARNING: Sharp blade on cutting attachment shield. To prevent serious injury, do

not touch the line cutting blade.

PPLICATIONS

As a trimmer:

• Cutting grass and light weeds.

• Edging

• Decorative trimming around trees, fences, etc.

ASSEMBLY TOOLS REQUIRED

Phillips screwdriver

•

KNOW YOUR UNIT

park Plug

uffler

Shaft Grip

On/Off Control

Choke Lever

ir Filter

over

Starter

Rope

Grip

uel Cap

ASSEMBLY INSTRUCTIONS

REMOVE AND INSTALL THE CUTTING ATTACHMENT SHIELD

utting

WARNING:

hield should NOT be installed when

perating the unit with a blade. Remove the

utting attachment shield before removing

c or installing the blade.

The cutting attachment

Remove the cutting attachment shield when using the unit as a brushcutter

Remove the cutting attachment shield from the shield mount by removing the three (3) screws with a flat blade screwdriver (Fig. 6). Store parts for future use.

Attachment

Shield

Screws (3)

ear Housing

J-Handle

EZ-Link™

Shaft Housing

Cutting Head

Cutting Head Shield

ASSEMBLY INSTRUCTIONS

WARNING:

ttachment shield in place.

INSTALL AND ADJUST THE J-HANDLE

On some units, the J-handle may be pre-

installed. In this case, loosen the screws and go to step 5.

1. Place the J-handle between the top and

middle clamp pieces (Fig. 1).

2. While holding the three pieces together, install

the four (4) screws through the top clamp and into middle clamp.

NOTE: The holes in the top and middle clamp

will line up only when assembled correctly.

3. Place the clamps and the J-handle over the

shaft housing and onto the bottom clamp.

4. Hold each hex nut in the bottom clamp

recess with a finger. Start screws with a large Phillips screwdriver. Do not tighten until you make the handle adjustment.

5. Slide the J-handle in or out until the arrow/white

line on the decal touches the clamp assembly (Fig. 2). You must first loosen the screws if the handle is pre-installed.

6. While holding the unit in the operating position, 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.

To prevent serious personal injury, never operate the trimmer without the cutting

crew

INSTALL THE HARNESS

Throttle Control

WARNING:

Always use the shoulder harness when using the cutting blade to avoid

serious personal injury.

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

2. Pull the strap over the cross bar and down through the

rimer Bulb

slot in the buckle (Fig. 7).

3. Put the harness on over head and onto shoulder. Snap it on to the support fitting (Fig. 8).

4. Adjust length to fit the operator’s size. Pull tab to lengthen, pull strap to shorten (Fig. 9).

ig. 7

upport

itting

ig. 8

ig. 9

Install the cutting attachment shield when using the unit as a grass trimmer

o avoid serious personal injury, the cutting attachment shield MUST be in place at all

WARNING:

imes 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. 6).

)

(

REMOVE THE CUTTING ATTACHMENT AND INSTALL THE CUTTING BLADE NOTE: To make cutting blade removal and installation easier, place the unit on the ground or on a work bench

Remove the Cutting Attachment Shield

WARNING:

hot for a short time even after the unit is turned off. Do not touch the gear housing until it has cooled.

See Remove and Install the Cutting Attachment Shield.

Remove the Cutting Attachment

ddl

Align the shaft bushing hole with the locking rod

he gear housing gets hot with use. It can result in injury to the operator. The housing remains

Output Shaft Bushing

Output Shaft

slot and insert the locking rod into the shaft bushing hole (Fig. 10).

)

(

2. Hold the locking rod in place by grasping it next to the boom of the unit (Fig. 11).

3. While holding the locking rod, remove the cutting attachment by turning it clockwise off of the output shaft (Fig. 12). Store the cutting attachment for future use.

NOTE: The blade retainer under the cutting

Shaft Bushing Hole

Locking Rod

lot

ocking Rod

attachment will be used when installing the

ecal

cutting blade.

ig. 10

OPERATING THE EZ-LINK™ SYSTEM

Fig. 2

The EZ-Link™ system enables the use of these optional Add-Ons.

Mach 4® Trimmer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AF720

Hedge Trimmer* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AH720*

Brushcutter* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BC720*

Cultivator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GC720

Edger*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LE720*

Pole Saw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PS720

Straight Shaft Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS725

Turbo Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB720

* Do NOT use this Add-On with an electric powered unit. REMOVING THE ADD-ON

1. Turn the knob counterclockwise to loosen

EZ-Link™ Coupler

Release

Button

Primary Hole

(Fig. 5).

2. Press and hold the release button (Fig. 3).

3. While firmly holding the upper shaft housing, pull the lower shaft housing straight out of the EZ-Link™ coupler (Fig. 4).

INSTALLING THE ADD-ON NOTE: To make installing or removing the add-on easier, place the unit on

the ground or on a work bench.

Guide Recess

Fig. 3

Upper Shaft

Housing

90˚ Edging Hole

(Trimmer Only)

Fig. 4

Lower Shaft

Housing

1. Turn knob counterclockwise to loosen (Fig. 5).

2. While firmly holding the add-on, push it straight into the EZ-Link™ coupler (Fig. 4).

NOTE: Aligning the release button with the guide recess will help

installation (Fig. 3).

3. Turn the knob clockwise to tighten (Fig. 5).

Knob

Fig. 5

For decorative trimming/edging with the line cutting head, lock the release button into the 90° hole (Fig. 5).

Cutting Attachment

Locking Rod

Slot

Locking Rod

Fig. 11

Fig. 12

ASSEMBLY INSTRUCTIONS

Install the Cutting Blade

ARNING:

lade.

1. Place the cutting blade on the output shaft bushing (Fig. 13).

WARNING:

center, the unit will vibrate and the blade

ay fly off, causing possible serious

ersonal injury.

2. Make sure that the cutting blade is centered on the pilot step and sitting flat against the output shaft bushing (Fig. 14).

3. Align the shaft bushing hole with the locking rod slot and insert the locking rod into the bushing hole (Fig. 10).

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

5. Tighten nut counterclockwise against the blade while holding the locking rod:

• If using a torque wrench and a 13 mm socket tighten to: 325 - 335 in•lb, 27 - 28 ft.•lb, 37 -

38 N•m.

• Without a torque wrench, use a 13 mm closedend 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. 15).

6. Remove the locking rod from the locking rod slot.

To avoid serious personal injury, always wear gloves while handling or installing the

If the cutting blade is off-

Blade Retainer

hield Mount

Output Shaft

Bushing

Locking Rod

Pilot Hole

ig. 13

Fig. 14

Nut

Cutting Blade

• A

•

or proper engine operation and maximum

CAUTION:

eliability, pay strict attention to the oil and fuel mixing instructions

r on the 2-cycle oil container. Using improperly mixed fuel can severely damage the engine.

uel

n ve

rati

WARNING:

nd allow it to cool before filling the fuel tank. Do not smoke while filling the tank. Keep sparks and open

lames at a distance from the area.

WARNING:

fuel cap securely in place.

ARNING:

Avoid creating a source of ignition for spilled fuel. Do not start the engine until fuel vapors dissipate.

spose

ove

(

ters

Remove fuel cap slowly to avoid injury from fuel spray. Never operate the unit without the

)

unl

ead

asoline is extremely flammable. Ignited vapors may explode. Always stop the engine

dd fuel in a clean, level and well ventilated outdoor area. Wipe up any spilled fuel immediately.

’

spo

(

fuel

spi

)

UNLEADED GAS 2 CYCLE OIL

nhi

uni

’

(

1 GALLON US

)

(3.8 LITERS)

ttl

3.2 FL. OZ. (95 ml)

1 LITER 25 ml

MIXING RATIO - 40:1

spe

p. t

se a

40:

1/4 - 1/2 turn Counterclockwise

ig. 15

o avoid serious personal injury or damage to the unit, do not start or operate this unit with the

WARNING:

locking rod in the locking rod slot.

ARNING:

while in use. This can result in severe personal injury. Replace the blade.

o not sharpen the cutting blade. Sharpening the blade can cause the blade tip to break off

REMOVE THE CUTTING BLADE AND INSTALL THE CUTTING ATTACHMENT

o avoid serious personal injury, always wear gloves while handling or installing the

WARNING:

blade.

Remove the Cutting Blade

1. Align the shaft bushing hole with the locking rod slot and insert the locking rod into the bushing hole (Fig. 10).

2. Hold the locking rod in place by grasping it next to the boom of the unit (Fig. 11).

3. While holding the locking rod, loosen the nut on the blade by turning it clockwise with a 13 mm closed- end or socket wrench (Fig. 16).

4. Remove the nut, blade retainer and blade. Store the nut and blade together for future use in a secure place. Store out of children’s reach.

Install the Cutting Attachment

1. Align the shaft bushing hole with the locking rod slot and insert the locking rod into the shaft bushing hole (Fig. 10). Place the blade retainer on

Clockwise

the output shaft with the flat surface against the output shaft bushing (Fig. 17). Screw the cutting attachment counterclockwise onto the output shaft. Tighten securely.

Cutting Attachment

Fig. 16

NOTE: The blade retainer must be installed on

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

2. Remove the locking rod.

3. Install the cutting attachment shield. Refer to Remove and Install the Cutting Attachment Shield.

WARNING:

times while operating the unit as a trimmer.

To avoid serious personal injury, the cutting attachment shield MUST be in place at all

Blade Retainer

Output Shaft Bushing

Locking Rod

Fig. 17

OIL AND FUEL INFORMATION

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.

WARNING:

and void the warranty.

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 30 days old).

USING BLENDED FUELS

If choosing to use a blended fuel, or its use is unavoidable, follow recommended precautions:

• Always use the fresh fuel mix explained in the operator's manual

• Use the fuel additive STA-BIL® or an equivalent

It has been proven that fuel containing greater than 10% ethanol will likely damage this engine

STARTING AND STOPPING INSTRUCTIONS

FF (O)

perate this unit in a well-ventilated outdoor area.

WARNING:

arbon monoxide exhaust fumes can be lethal in a confined area.

WARNING:

starting position when pulling the starter rope (Fig. 9). To avoid serious

njury, the operator and unit must be in a stable position while starting.

void accidental starting. Make sure you are in the

STARTING INSTRUCTIONS

1. Mix fuel with oil. Fill fuel tank with fuel/oil mixture. See Oil and Fuel

Mixing Instructions.

2. Fill the fuel tank with fresh, clean fuel mix. Refer to Fueling the Unit. NOTE: There is no need to turn the unit on. The On/Off Control is in the

ON ( I ) position at all times (Fig. 18).

3. 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. 19). If fuel can not be seen in the bulb, press and release the bulb until fuel is visible.

4. Place the choke lever in Position 1 (Fig. 19).

5. Crouch in the starting position (Fig. 20). Squeeze the throttle control lever. Pull the starter rope 5 times.

6. Place the choke lever in Position 2 (Fig. 19)

7. Squeeze the throttle control, pull the starter rope in a controlled motion 3 to 5 times to start engine.

8. Keep the throttle squeezed and allow the engine to warm up for 30 to 60 seconds.

9. Continue squeezing the throttle control, move the choke lever to Position 3 (Fig. 19) and continue warming the engine for an additional 60 seconds. The unit may be used during this time.

NOTE: Unit is properly warmed up when engine accelerates without hesitation. IF...the engine hesitates, return the choke lever to Position 2 (Fig. 19) and continue warm-up. IF...the engine does not start, go back to step 3. IF...the engine fails to start after 2 attempts, place the choke lever in Position 3 and squeeze the throttle

control. Pull

the starter rope out with a controlled and steady motion 3 to 8 times. The engine should start. If not,

repeat.

IF WARM...If the engine is already warm, go back to step 6. STOPPING INSTRUCTIONS

1. Release the throttle control and allow the engine to cool down by idling.

2. Press and hold the On/Off Control switch in the OFF (O) position until the unit comes to a complete stop (Fig. 18).

IF USING THE OPTIONAL ELECTRIC STARTER OR POWER START BIT™ ACCESSORY

HOW TO START THE UNIT USING THE ELECTRIC STARTER OR POWER START BIT ACCESSORY. NOTE: This Unit Can Use an Electric Start or Power Start Bit™ Optional Accessory!

Please refer to the Electric Starter or Power Start Bit operator’s manual for proper use of this feature. (Items Sold Separately! Please refer to page 5 of this manual about purchasing these accessories.)

STARTING INSTRUCTIONS

1. Mix fuel with oil. Fill fuel tank with fuel/oil mixture. See Oil and Fuel Mixing Instructions.

2. Fill the fuel tank with fresh, clean fuel mix. Refer to Fueling the Unit.

NOTE: There is no need to turn the unit on. The On/Off Control is in the ON ( I ) position at all times (Fig. 19).

3. Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb (Fig. 19). If fuel cannot be seen in the bulb, press and release the bulb until fuel is visible.

4. Move the choke lever to Position 1 (Fig. 19).

5. Crouch in the starting position (Fig. 20). Place the electric starter or power start bit into the back of the unit. Refer to the Operation section of the Electric Starter or Power Start Bit operator’s manual.

6. Squeeze the throttle control lever. Press and hold the electric starter or drill ON (I) button for 2 seconds.

7. Move the choke lever to Position 2 (Fig. 19).

8. Squeeze the throttle control lever, press and hold the electric starter or drill ON (I) button for 2-second intervals until the unit starts.

9. Continue to squeeze the throttle control, remove the electric starter or drill from the unit and allow the engine to warm up for 30 to 60 seconds.

10. Continue squeezing the throttle control, move the choke lever to Position 3 (Fig. 19) and run the unit for an additional 60 seconds. The unit may be used during this time

NOTE: Unit is properly warmed up when engine accelerates without hesitation. IF... the engine hesitates, return the choke lever to Position 2 (Fig. 19) and continue warm-up. IF... the engine does not start, go back to step 3. IF... the engine fails to start after 2 attempts, place the choke lever in Position 3 and squeeze the throttle control. Press

and hold the electric starter or drill ON (I) button for 2-second intervals until the unit starts.

IF WARM... If the engine is already warm, start the unit with the blue choker lever in Position 2. After the unit starts,

move the blue choker lever to Position 3.

STOPPING INSTRUCTIONS

1. Release the throttle control and allow the engine to cool down by idling.

2. Press and hold the On/Off Control switch in the OFF (O) position until the unit comes to a complete stop (Fig. 19).

Choke Lever

tarter

ope

ig. 18

Fig. 19

Fig. 20

ON (I)

Throttle

Control

Primer Bulb

tarting Position

OPERATING INSTRUCTIONS

HOLDING THE TRIMMER

WARNING: Always wear eye, hearing, foot and body protection to reduce the risk of injury

when operating this unit.

Before operating the unit, stand in the operating position (Fig. 21). 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 Jhandle

• The unit is at waist level

• The cutting head is parallel to the ground and easily contacts the grass without the need to bend over

TIPS FOR BEST TRIMMING RESULTS

• Keep the cutting head parallel to the ground.

• Do not force the cutting head. Allow the tip of the line to

ig. 21

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 unit 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 the 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.

Some line breakage will occur from:

• Entanglement with foreign matter

• Normal line fatigue

• Attempting to cut thick, stalky weeds

ig. 22

• Forcing the line into objects such as walls or fence posts

DECORATIVE TRIMMING

Decorative trimming is accomplished by removing all vegetation around trees, posts, fences, etc. Rotate the whole unit so that the cutting head is at a 30° angle to the ground (Fig. 22).

USING THE CUTTING BLADE

Before operating the unit with the cutting blade, stand in the operating position (Fig. 23). Refer to Holding the Trimmer.

WARNING: Always wear eye, hearing, foot, body protection and the shoulder strap to reduce

the risk of injury when operating this unit.

WARNING: Do not use the cutting blade for edging or as an edger. Severe personal injury

to yourself or others can result.

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. At full throttle the blade has maximum cutting power and is less likely to bind, stall or cause blade thrust (which can result in serious personal injury to the operator or others).

WARNING:

Blade thrust may occur when the 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.

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

• Always release the throttle trigger and allow the engine to return to idle speed when not cutting.

• When you are finished, always unsnap the unit from the

WARNING: The blade continues to spin after

the engine is turned off. The coasting blade can seriously cut you if accidentally touched.

harness before taking off the harness.

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

Fig. 23

• After the return swing, move forward to the next area to be cut and plant your feet again.

• The cutting blade is designed with a second cutting edge. You can use it by removing the blade, turning it upside down and reinstalling it.

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 left to your right (Fig. 24).

• Avoid the material just cut as you make the return swing.

Fig. 24

WARNING: Do not clear away any cut material with the engine running or blade turning. To

avoid serious personal injury, turn off the engine. Allow the blade to stop before removing materials wrapped around the blade shaft.

MAINTENANCE AND REPAIR INSTRUCTIONS

AINTENANCE SCHEDULE

WARNING:

service and repair a cool unit. Disconnect the spark plug wire to ensure that the unit cannot start.

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

our unit to any non-road engine repair establishment, individual or authorized service dealer.

OTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by any

on-road engine repair establishment, individual or authorized service dealer.

OTE: Please read the California/EPA statement that came with the unit for a complete listing of terms and coverage

or the emissions control devices, such as the spark arrestor, muffler, carburetor, etc.

FREQUENCY MAINTENANCE REQUIRED SEE

Before starting engine Fill fuel tank with fresh fuel p. 3

Every 10 hours Clean and re-oil air filter p. 4

Every 25 hours Check spark plug condition and gap p. 4

LINE INSTALLATION

This section covers both SplitLine™ and standard single line installation. Always use original equipment manufacturer 0.105 in. (2.67 mm) replacement line. Other types of line

may make the engine overheat or fail.

WARNING:

become dangerous projectiles.

There are two methods to replace the trimming line:

• Wind the inner reel with new line

• Install a prewound inner reel

Winding the Existing Inner Reel

1. Hold the outer spool with one hand and unscrew the Bump Knob clockwise (Fig. 25). 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.

25).

3. Remove spring from the inner reel (Fig. 25).

4. Use a clean cloth to clean the the inner reel, spring, shaft and inner surface of the outer spool (Fig. 26).

5. Check the indexing teeth on the inner reel and outer spool for wear (Fig. 27). If necessary, remove burrs or replace the reel and spool.

NOTE: SplitLine™ 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 28 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.

Single Line Installation

Go To Step 8 for SplitLine™ Installation

6. Take approximately 18 feet (6 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. 29). Pull the line through the inner reel so that the loop is as small as possible.

7. Wind the lines in tight even layers, onto the reel (Fig. 30). Wind the line in the direction indicated on the inner reel. Place your index finger between the two lines to stop the lines from over-lapping. Do not overlap the ends of the line. Proceed to step

11.

SplitLine™ Installation

8. Take approximately 9 feet (3 m) of new trimming line. Insert one end of the line through one of the two holes in the inner reel (Fig. 31). 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. 31).

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 ree

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. 32).

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.

33). 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. 25). 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. 25).

3. Remove the spring from the old inner reel (Fig. 25).

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. 33).

6. 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.

To prevent serious injury, never perform maintenance or repairs with unit running. Always

Never use metal-reinforced line, wire, chain or rope. These can break off and

Outer Spool

Spring

nner Reel

Bolt

. 2

or Use with SplitLine

or Single Line

. 3

Fig. 32

Spring

Fig. 33

oop

Holding

Slots

. 2

For Use with

ingle Line ONLY

Bump Knob

ndexing Teeth

Fig

Slotted

Holes

. 2

™

+ 11 hidden pages

Troy-Bilt TB42 Owner's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual