Troy-Bilt TB22 Owner's Manual

769-08425 / 00 09/12

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

TB22 EC

2-Cycle Trimmer

Operator’s Manual

English — Page 1Español — Page 7

Removing Unit From Carton

11 2

Remove all contents from carton.

Assemble The Unit

40:1

1 Gallon 3.2 oz

Mix thoroughly in separate fuel can:

– 3.2 fl. oz. of 2-cycle

engine oil

– 1 gallon of unleaded

gasoline (less than 30 days old)

NOTE: Do not mix directly in

fuel tank.

Assemble The Unit

Slot

Bracket

Slide shield’s slot onto mounting bracket. Rotate

shield onto shaft. Push square bolt through shield and bracket. Tighten washer and wing nut onto bolt.

6 7

Place unit on a level surface. Fill fuel tank.

Remove cap from lower boom. Push cutting attachment into coupler. Turn coupler knob clockwise to tighten.

Starting The Unit

Primer

Bulb

10 X

Press primer bulb 10 times,

or until fuel is visible

Min. 6”

Push the handle onto the shaft housing. The bolt hole should be to the right. Insert the bolt into the bolt hole. Tighten the bolt, but not completely. Move the handle to the location that provides the best grip. Move the handle a minimum of 6 inches away from the shaft grip. Tighten the bolt until the handle is secure.

Choke Lever

Move choke lever to Position 1.

Electric Starter or

Power Start Bit Optional!

THESE OPTIONAL ACCESSORIES

ARE SOLD SEPARATELY!

This unit has an alternate starting method that 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

ASSEMBLY TOOLS REQUIRED:

• 3/8” Socket

Cutting Head Shield

Starter Rope

D-Handle

On/ Off Switch

Throttle Control

Coupler

Need Help?

Call 1-800-828-5500

DIDN’T START?

Repeat these instructions.

IF engine fails to start after 2 attempts,

move choke lever to position 3 and pull

the starter rope until engine starts

IF unit still fails to start, refer to the

operator’s manual for additional starting

and troubleshooting information

Fuel Cap

Starting The Unit

19 10

Crouch in starting position. SQUEEZE and HOLD

Reloading the Line*

Bump Knob

11 2

Unscrew the bump knob counterclockwise.

Reloading the Line

Hold the inner reel and outer spool together. Firmly pull the two line ends to release them from the holding slots. Screw the bump knob on clockwise. Tighten the bump knob securely.

throttle for ALL further steps.

Outer Spool

Spring

Remove the inner reel and spring.

For replacement line, call 1–800-800-7310 or go to an authorized service dealer.

For single line installation or replacement spool installation instructions, refer to the Replacing the Trimming Line section of this manual.

*This is to assist in the reloading of Splitline® only. These instructions are NOT part of the fast assembly instructions. Line does not need to be installed on the initial assembly and start-up.

Inner

Reel

Choke Lever

5 X

Pull rope 5 times. Move choke lever to

Cut one 6-foot (1.8 m) length of new 0.095” split line trimming line. Split each end about 6 inches (150 mm).

Position 2 and squeeze throttle.

Top Hole

Insert the end of one line into the top hole and the end of the other line into the bottom hole.

Bottom Hole

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

Wind the line tightly in the direction shown on the inner reel. The split wall will divide the line. Wind the line until it is completely divided and about 6 inches (150 mm) of line remains.

3-5 X

Split Wall

Choke Lever

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

Holding Slots

Insert the two 6-inch sections into the two .095 holding slots.

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

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

Pass the two line ends through the eyelets. Place the spring inside the inner reel. Insert the inner reel into the outer spool. Push the inner reel and outer spool together.

Eyelets

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

• 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.

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.

NOTE:

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

SPARK ARRESTOR NOTE NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon and Washington.

All U.S. Forest Land and the state of California (Public Resources Codes 4442 and 4443), Oregon and Washington require, by law that certain internal combustion engines operated on forest brush and/or grass- covered areas be equipped with a spark arrestor, maintained in effective working order, or the engine be constructed, equipped and maintained for the prevention of fire. Check with your state or local authorities for regulations pertaining to these requirements. Failure to follow these requirements could subject you to liability or a fine. This unit is factory equipped with a spark arrestor. If it requir

es replacement, ask your LOCAL

SERVICE DEALER to install the Accessory Part #753-05997 Muffler Assembly.

READ ALL INSTRUCTIONS BEFORE OPERATING

• Read the instructions carefully. Be familiar with the controls and proper use of the unit.

• Do not operate this unit when tired, ill, or under the influence of alcohol, drugs, or medication.

• Children and teens under the age of 15 must not use the unit, except for teens guided by an adult.

• All guards and safety attachments must be installed properly before operating the unit.

•Inspect the unit before use. Replace damaged parts. Check for fuel leaks. Make sure all fasteners are in place and secure. Replace parts that are cracked, chipped, or damaged in any way. Do not operate the unit with loose or damaged parts.

• Carefully inspect the area before starting the unit. Remove all debris and hard or sharp objects such as glass, wir

e, 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

• 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 r

elieve 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.

• 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 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.

•This unit has a clutch. The tines remain stationary when the engine is idling. If they do not, have the unit adjusted by an authorized service technician.

•Be sure the tines are 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 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 pr

oper 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 or try to stop the tines while they are rotating.

• 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. Oil the tines with machine oil to prevent rust.

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.

SAVE THESE INSTRUCTIONS

• IMPORTANT SAFETY INSTRUCTIONS •

SERVICE INFORMATION

TABLE OF CONTENTS

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

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

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

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

Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

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

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Maintenance and Repair Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

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.

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

For assistance r

egarding 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.

WARNING:

When using the unit, all safety rules must be followed. Please read these instructions before operating the unit in order to ensure the safety of the operator and any bystanders. Please keep these instructions for later use.

WARNING:

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

following precautions:

RULES FOR SAFE OPERATION

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 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

• 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.

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.

SYMBOL MEANING

SAFETY ALERT:

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.

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.

CAUTION:

Failure to obey a safety warning may result in property damage or personal injury to yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

CALIFORNIA PROPOSITION 65

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.

INSTALLING THE CUTTING HEAD SHIELD

Use the following instructions if the cutting head shield is not installed. Use only the instructions that apply to the type of shaft and shield equipped with this unit.

1. Remove the wing nut and washer from the cutting head shield.

2. Insert the short tab (the one without a hole) on the mount bracket into the slot on the cutting head shield (Fig. 1).

3. Rotate the cutting head shield counterclockwise to align the hole on the cutting head shield with the hole on the mount bracket (Fig. 1).

4. Insert the square bolt into the hole underneath the cutting head shield (Fig. 2). Push the square bolt through the cutting head shield and mount bracket.

5. Put the washer onto the square bolt (Fig. 2).

6. Screw the wing nut onto the square bolt until the cutting head shield is firmly in place (Fig. 2).

OPERA

TING THE COUPLER

The coupler enables the use of various optional attachments.

NOTE: To make installing or removing the attachment

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

Installing the Attachment NOTE: Remove the protective cap and gray spacer from

the upper and lower shafts prior to assembling the attachment.

1. Turn the knob counterclockwise to loosen (Fig. 4).

2. While firmly holding the attachment, push it straight into the coupler until the release button snaps firmly into the primary hole (Fig. 6).

NOTE: Aligning the release button with the guide recess

will help installation (Fig. 5).

3. Turn the knob clockwise to tighten (Fig. 4).

For decorative edging with a string trimmer attachment, lock the release button into the 90° edging hole (Fig. 4).

Removing the Attachment

1. Turn the knob counterclockwise to loosen (Fig. 4).

2. Press and hold the release button (Fig. 5).

While firmly holding the upper shaft housing, pull the attachment straight out of the coupler (Fig. 6).

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 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

• Always agitate the fuel mix before fueling the unit

• Drain the tank and run the engine dry before storing the unit

USING FUEL ADDITIVES

The bottle of 2-cycle oil contains a fuel additive which will help inhibit corrosion and minimize the formation of gum deposits. It is recommended to use our 2-cycle oil with this unit.

If unavailable, use a good 2-cycle oil designed for air-cooled engines along with a fuel additive, such as STA-BIL Gas Stabilizer or an equivalent. Add 0.8 oz. (23 ml) of fuel additive per gallon of fuel according to the instructions on the container. NEVER add fuel additives directly to the unit’s fuel tank.

Thoroughly mix the proper ratio of 2-cycle engine oil with unleaded fuel in a separate fuel can. Use a 40:1 fuel/oil ratio. Do not mix them directly in the engine fuel tank. See the table for specific gas and oil mixing ratios.

NOTE:

One gallon (3.8 liters) of unleaded fuel mixed with one 3.2 oz. (95 ml) bottle of 2-cycle oil makes a 40:1

fuel/oil ratio.

NOTE: Dispose of the old fuel/oil mix in accordance to federal, state and local regulations. FUELING THE UNIT

1. Turn unit on its side, with the fuel cap facing up, and remove the fuel cap.

2. Place the gas container’s spout into the fill hole on the fuel tank and fill the tank.

NOTE: Do not overfill the tank.

3. Wipe up any gasoline that may have spilled.

4. Reinstall the fuel cap.

5. Move the unit at least 30 ft. (9.1 m) from the fueling source and site before starting the engine.

MIXING RATIO - 40:1

KNOW YOUR UNIT

APPLICATIONS

As a trimmer:

• Cutting grass and light weeds.

• Edging

• Decorative trimming around trees, fences, etc.

Throttle Control

D-Handle

Shaft Grip

Air Filter

Cover

Spark Plug

Shaft Housing

Starter Rope Grip

Line Cutting

Blade

Muffler

On/Off Control

Cutting Head

Cutting Head Shield

Fuel Cap

OIL AND FUEL INFORMATION

ASSEMBLY INSTRUCTIONS

WARNING:

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

cutting attachment shield in place.

Choke Lever

Primer Bulb

UNLEADED GAS 2 CYCLE OIL

1 GALLON US

(3.8 LITERS)

3.2 FL. OZ. (95 ml)

1 LITER 25 ml

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.

WARNING:

Gasoline is extremely flammable. Ignited vapors may explode. Always stop the engine and allow it to cool before filling the fuel tank. Do not smoke while filling the tank. Keep sparks and open flames at a distance from the area.

WARNING:

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

WARNING:

Add fuel in a clean, level and well ventilated outdoor area. Wipe up any spilled fuel immediately. Avoid creating a source of ignition for spilled fuel. Do not start the engine until fuel vapors dissipate.

WARNING:

It has been proven that fuel containing greater than 10% ethanol will likely damage this engine and void the warranty.

Coupler

ASSEMBLY TOOLS REQUIRED:

• 3/8” Socket

INSTALLING AND ADJUSTING THE HANDLE Installing the Handle

1. Push the handle down onto the shaft housing (Fig. 3). The bolt hole in the handle should be to the right.

2. Insert the bolt into the bolt hole and push it through (Fig.

3). Tighten the bolt with a 3/ 8” socket, but do not tighten the bolt completely .

3. While holding the unit in the operating position (Fig. 10), move the handle to the location that provides the best grip. Place it a minimum of 6 inches (15.24 cm) from the end of the shaft grip (Fig. 3).

4. Tighten the bolt with a 3/ 8” socket until the handle is secure.

Adjusting the Handle

If the handle requires adjustment:

1. Loosen the bolt with a 3/ 8” socket (Fig. 3).

2. While holding the unit in the operating position (Fig. 10), move the handle to the location that provides the best grip. Place it a minimum of 6 inches (15.24 cm) from the end of the shaft grip (Fig. 3).

3. Tighten the bolt with a 3/ 8” socket until the handle is secur

Fig. 3

Bolt

Shaft Grip

Minimum 6 in.

(15.24 cm)

Handle

Shaft

Housing

Fig. 5

Fig. 6

Fig. 4

Release Button

Guide Recess

90˚ Edging Hole

(Trimmer Only)

Knob

Primary Hole

Lower Shaft

Housing

Upper Shaft

Housing

WARNING:

Before using any attachment, read and understand the manual that came

with the attachment. Follow all safety information contained within.

CAUTION:

Before operating the unit, make sure the release button is fully snapped

into the primary hole (Fig. 6) and the knob (Fig. 4) is securely tightened.

WARNING:

To avoid serious personal injury and damage to the unit, shut the unit off

before removing or installing an attachment.

CAUTION:

The release button should be snapped into the primary hole only. Using the

wrong hole could lead to personal injury or damage to the unit.

Coupler

ASSEMBLY INSTRUCTIONS

Fig. 1

Mount Bracket

Cutting Head

Shield

Fig. 2

Washer

Square Bolt

Slot

Wing Nut

Cutting Head

Shield

Mount Bracket

HOLDING THE UNIT

Before operating the unit, stand in the operating position (Fig. 10). Check for the following:

• The operator is wearing eye protection and proper clothing

• With a slightly-bent right arm, the operator’s hand is holding the shaft grip

• The operator’s left arm is straight, the left hand holding the D-handle

• The unit is at waist level

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

ADJUSTING TRIMMING LINE LENGTH

The Bump Head™ cutting head allows the release of trimming line without stopping the engine. To release more line, lightly tap the cutting head on the ground (Fig. 11) while operating the unit at high speed.

NOTE:

Always keep the trimming line fully extended. Line release becomes more

difficult when the cutting line gets shorter.

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

For best results, tap the bump knob on bare ground or hard soil. If attempting a line release in tall grass, the engine may stall. Always keep the trimming line fully extended. Line release becomes more difficult when the cutting line gets shorter.

NOTE: Do not rest the Bump Head™ on the ground while the unit is running. Some line breakage will occur from:

• Entanglement with foreign matter

• Normal line fatigue

• Attempting to cut thick, stalky weeds

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

TIPS FOR BEST TRIMMING RESULTS

• Keep the cutting head parallel to the ground.

• Do not force the cutting head. Allow the tip of the line to do the cutting, especially along walls. Cutting with more than the tip will reduce cutting efficiency and may overload the engine.

• Cut grass over 8 inches (200 mm) by working from top to bottom in small increments to avoid premature line wear or engine drag.

• Cut from right to left whenever possible. Cutting to the left improves the unit's cutting efficiency. Clippings are thrown away from the operator.

• Slowly move the 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.

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. 12).

Fig. 12

Fig. 11

MAINTENANCE SCHEDULE

Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal tune-up.

NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these

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

NOTE: Maintenance, replacement, or repair of the emission control devices and system may be

performed by any non-road engine repair establishment, individual or authorized service dealer.

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

and coverage for the emissions control devices, such as the spark arrestor, muffler, carburetor, etc.

MAINTENANCE AND REPAIR INSTRUCTIONS

FREQUENCY MAINTENANCE REQUIRED SEE

Every 10 hours Clean and re-oil air filter p. 5

Every 25 hours Check spark plug condition and gap p. 5

WARNING:

To prevent serious injury, never perform maintenance or repairs with unit running. Always service and repair a cool unit. Disconnect the spark plug wire to ensure that the unit cannot start.

OPERATING INSTRUCTIONS

WARNING:

Always wear eye, hearing, foot and body

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

Fig. 10

WARNING:

Do not remove or alter the line cutting blade assembly. Excessive line length

will cause premature engine failure and / or unit damage.

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. 7).

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. 8). 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. 8).

5. Crouch in the starting position (Fig. 9). Squeeze the throttle control lever. Pull the starter rope 5 times.

6. Place the choke lever in Position 2 (Fig. 8)

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.

. Continue squeezing the throttle control, move the

choke lever to Position 3 (Fig. 8) 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. 8) 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. 7).

STARTING AND STOPPING INSTRUCTIONS

WARNING:

Avoid accidental starting. Make sure you are in the starting position when pulling the starter rope (Fig. 9). To avoid serious injury, the operator and unit must be in a stable position while starting.

WARNING:

Operate this unit in a well-ventilated outdoor area. Carbon monoxide exhaust fumes can be lethal in a confined area.

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 Fig. 23 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.

7).

3. Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb (Fig. 8). 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. 8).

5. Crouch in the starting position (Fig. 9). 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. 8).

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

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. 8) 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. 8) 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 alr

eady 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. 7).

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

Fig. 8

Choke Lever

Primer Bulb

Fig. 9

Starting Position

Starter Rope

Fig. 7

OFF (O)

ON (I)

Throttle Control

30°

MAINTAINING THE SPARK PLUG

1. Stop the engine and allow it to cool. Grasp the spark plug boot firmly and pull it from the spark plug.

2. Clean around the spark plug. Remove the spark plug from the cylinder head with a 5/8-inch socket, turning counterclockwise.

3. Inspect the spark plug. If the spark plug is cracked, fouled or dirty, replace it with a replacement part #753-06193, a Champion RDJ7J or an equivalent spark plug.

4. Use a feeler gauge to set the air gap at 0.025 in. (0.635 mm) (Fig. 22).

5. Install the spark plug in the cylinder head. Tighten the spark plug with a 5/8-inch socket, turning it clockwise until snug.

NOTE: If using a torque wrench, torque to:

110-120 in.•lb. (12.3-13.5 N•m). Do not over tighten.

6. Reattach the spark plug boot.

REPLACING THE TRIMMING LINE

Only use the trimming line described in the Specifications section. Other types of trimming line may cause the engine to overheat or fail.

NOTE: Always use the corr

ect line length when installing trimming line. The line may not release properly if the line is too long.

Part 1 - Removing the Inner Reel

1. Hold the outer spool with one hand and unscrew the bump knob counterclockwise (Fig. 13).

NOTE: The outer spool will remain attached

to the unit.

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

3. Remove the inner reel from the outer spool (Fig. 14).

4. Remove the spring from the inner reel (Fig. 14).

5. Use a clean cloth to clean the inner reel, spring, shaft and inner surface of the outer spool.

6. Check the indexing teeth and holding slots for wear (Fig. 15). If necessary

, remove burrs or replace the inner reel and outer spool.

Proceed to Part 2 - Winding New Trimming Line onto the Inner Reel.

Part 2 - Winding New Trimming Line onto the Inner Reel

• If using single line, refer to Winding Single Line.

• If using split line, refer to Winding Split Line.

• If using a prewound inner reel, proceed to Part 3 - Installing the Inner Reel.

Winding Single Line

1. Cut one 12-foot (3.7 m) length of new single trimming line. Fold the line in half to create a loop in the middle.

2. Insert the loop into the slot in the split wall (Fig. 16). Wind the line tightly in the direction shown on the bottom of the inner reel until about 6 inches (150 mm) of line remains. Keep the top half of the line above the split wall and the bottom half of the line below the split wall.

3. Insert the two 6-inch sections into the two .095 holding slots (Fig. 18).

NOTE: Failure to wind the line in the

direction indicated will cause the cutting head to operate incorrectly.

Proceed to Part 3 - Installing the Inner Reel.

Winding Split Line

1. Cut one 6-foot (1.8 m) length of new split line trimming line. Split each end about 6 inches (150 mm).

2. Using one split end, insert one line into the top hole and the other line into the bottom hole in the inner r

eel (Fig. 17).

3. Wind the line tightly in the direction shown on the bottom of the inner reel. The split wall will automatically divide the line. Wind the line until it is completely divided and about 6 inches (150 mm) of line remains.

NOTE: Failure to wind the line in the

direction indicated will cause the cutting head to operate incorrectly.

4. Insert the two 6-inch sections into the two .095 holding slots (Fig. 18).

Proceed to Part 3 - Installing the Inner Reel.

Part 3 - Installing the Inner Reel

1. Pass the two line ends through the eyelets in the outer spool. Place the spring inside the inner reel. Insert the inner reel into the outer spool. Push the inner reel and outer spool together (Fig.

19).

NOTE: The spring must be assembled on

the inner reel before reassembling the cutting head.

2. While holding the inner reel and outer spool together, firmly pull the two line ends to release them from the holding slots.

3. While holding the inner reel and outer spool together, screw the bump knob on clockwise. Tighten the bump knob secur

ely.

AIR FILTER MAINTENANCE

Cleaning the Air Filter

Failure to maintain the air filter properly can result in poor performance or can cause permanent damage to the engine.

1. Open the air filter cover by pressing the lock tab in and pulling out on the air filter cover (Fig. 20).

2. Remove the air filter (Fig. 20).

3. Wash the filter in detergent and water. Rinse the filter thoroughly and allow it to dry.

4. Apply enough clean SAE 30 motor oil to lightly coat the filter.

5. Squeeze the filter to spread and remove excess oil.

6. Replace the air filter into the air filter cover (Fig. 20).

NOTE: Operating the unit without the air filter

WILL VOID the warranty.

7. Close the air filter cover by swinging it to the left and then pressing it down until the lock tab snaps into place (Fig. 20).

WARNING:

To avoid serious personal injury, always turn the unit off and allow it to cool

before you clean or service it.

Fig. 20

Air Filter Cover

Air Filter

Lock Tab

MAINTENANCE AND REPAIR INSTRUCTIONSMAINTENANCE AND REPAIR INSTRUCTIONS

WARNING:

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

become dangerous projectiles.

Fig. 13

Bolt

Bump Knob

Outer Spool

Fig. 14

Outer Spool

Spring

Inner Reel

Shaft

Fig. 15

Indexing Teeth

Holding Slots

Fig. 16

Slot

Split Wall

Fig. 17

Top Hole

Bottom Hole

Split Wall

Fig. 18

Holding

Slots

Fig. 19

Outer Spool

Bump Knob

Inner Reel

Spring

Eyelets

IDLE SPEED ADJUSTMENT

NOTE: Careless adjustments can seriously damage the unit. An authorized service dealer should make

carburetor adjustments.

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 run for one minute to warm up. Refer to Starting and Stopping

Instructions.

2. Release the throttle trigger and let the engine idle. If the engine stops, insert a small Phillips screwdriver into the idle adjustment screw (Fig. 21). Turn the idle speed screw clockwise 1/8 of a turn at a time (as needed) until the engine idles smoothly.

3. If the engine appears to be idling too fast, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as needed), to r

educe idle speed.

Checking the fuel mixture, cleaning the air filter and adjusting the idle speed should solve most engine problems. If not and all of the following are true:

• the engine will not idle

• the engine hesitates or stalls on acceleration

• there is a loss of engine power

Have the carburetor adjusted by an authorized service dealer.

Fig. 21

Idle Adjustment Screw

WARNING:

Do not sand blast, scrape or clean

electrodes. Grit in the engine could damage the cylinder.

WARNING:

The cutting attachment will spin during idle speed adjustments. Wear

protective clothing and observe all safety instructions to prevent serious personal injury.

Fig. 22

0.025 in.

(0.635 mm.)

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