TROY-BILT TB22 EC 2-Cycle Trimmer Instruction Manual

TROY-BILT TB22 EC 2-Cycle Trimmer

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

No Assemnly Tools Required!

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

Removing Unit From Carton

Assemble The Unit

Starting The Unit

• 3.2 fl. oz. of 2-cycle engine oil
• 1 gallon of unleaded gasoline
  NOTE: Do not mix directly in fuel tank.

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.

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.

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

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 grass-covered areas be equipped with a spark arrestor, maintained in effective working order, or the engine be constructed, equipped and maintained for the prevention of fire. Check with your state or local authorities for regulations pertaining to these requirements. Failure to follow these requirements could subject you to liability or a fine. This unit is factory equipped with a spark arrestor. If it requires replacement, ask your LOCAL SERVICE DEALER to install the Accessory Part #753-05997 Muffler Assembly.

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.

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.

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 1–800–800-7310 IN U.S. OR 1-800-668-1238 IN CANADA

IMPORTANT SAFETY INSTRUCTIONS •

CALIFORNIA PROPOSITION 65
WARNING: Engine exhaust, some 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

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.

• 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: 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 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.

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.
• 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 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 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 instruction.

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.

• 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.

| I|

• ON/OFF STOP CONTROL
  ON / START / RUN

O|

• 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.

KNOW YOUR UNIT

APPLICATIONS

As a trimmer:

• Cutting grass and light weeds.
• Edging
• Decorative trimming around trees, fences, etc.

NO ASSEMBLY TOOLS REQUIRED

ASSEMBLY INSTRUCTIONS

INSTALL CUTTING ATTACHMENT SHIELD

WARNING: To prevent serious personal injury, never operate the trimmer without the cutting attachment shield in place.

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

1. Place the cutting attachment shield onto the shaft housing. Be sure the guard mounting bracket slides into the slot on the edge of the cutting shield. Rotate the shield into place, counterclockwise (Fig. 1). The holes in the guard mounting bracket and cutting attachment shield will line up.
2. From inside the cutting attachment shield, push the square bolt through the hole until the threaded end protrudes through the guard mounting bracket (Fig. 2).
3. Put the washer on the bolt, then screw the wing nut onto the bolt and tighten.

INSTALL AND ADJUST THE D-HANDLE

1. Push the D-handle down onto the shaft housing (Fig. 3). The hex bolt hole in the handle should be on the left side.
2. Insert the the bolt into the hex hole in the handle and push through. Place the washer on the bolt, then screw the wing nut onto the bolt. Do not tighten until making the handle adjustment.
3. Rotate the D-handle to place the grip above the top of the shaft housing. Place it a minimum of 6 inches (15.24 cm) from the end of the shaft grip.
4. While holding the unit in the operating position (Fig. 10), move the D-handle to the location that provides the best grip.
5. Tighten the wing nut until the D-handle is secure.

OPERATING THE EZ-LINK™ SYSTEM
The EZ-Link™ system enables the use of these optional Add-Ons.
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 (Fig. 6).
2. Press and hold the release button (Fig. 4).
3. While firmly holding the upper shaft housing, pull the lower shaft housing straight out of the EZ-Link™ coupler (Fig. 5).

INSTALLING THE ADD-ON
NOTE: To make installing or removing the addon easier, place the unit on the ground or on a work bench.

1. Turn knob counterclockwise to loosen (Fig. 6).

2. While firmly holding the add-on, push it straight into the EZ-Link™ coupler (Fig. 5).
   NOTE: Aligning the release button with the guide recess will help installation (Fig. 4).

3. Turn the knob clockwise to tighten (Fig. 6).
   For decorative trimming/edging with the line cutting head, lock the release button into the 90° hole (Fig. 6).

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.

DEFINITION OF BLENDED FUELS

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

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

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.

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. (23ml) 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.

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.

FUELING THE UNIT

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.

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.

STARTING AND STOPPING INSTRUCTIONS

WARNING: Operate this unit in a well-ventilated outdoor area. Carbon monoxide exhaust fumes can be lethal in a confined area.
WARNING: Avoid accidental starting. Make sure you are in the starting position when pulling the starter rope (Fig. 9). To avoid serious
injury, the operator and unit must be in a stable position while starting.

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 )

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 5times 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. 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). 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. 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 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. 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 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. 7).

OPERATING INSTRUCTIONS

HOLDING THE UNIT

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. 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

WARNING: Do not remove or alter the line cutting blade assembly. Excessive line length will cause premature engine failure and / or unit damage.

OPERATING INSTRUCTIONS

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).

MAINTENANCE AND REPAIR INSTRUCTIONS

MAINTENANCE SCHEDULE

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.

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.

REPLACING THE TRIMMING LINE

WARNING: Never use metal-reinforced line, wire, chain or rope. These can break off and become dangerous projectiles.

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 correct 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 burros 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 rewound inner reel, proceed to Part 3
  • Installing the Inner Reel.

Winding Single Line

• Cut two 8-foot (2.4 m) lengths of new single trimming line.

• Insert the end of one line into the top hole in the inner reel (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 line above the split wall. Insert the 6-inch section into the nearest .095 holding slot
  (Fig. 17).

• Insert the end of the other line into the bottom hole in the inner reel (Fig. 18). Wind the line tightly in the direction shown on the bottom of the inner reel until about 3 to 9 inches (75 to 225 mm) of line remains. Keep the line below the split wall. Insert the 3 to 9-inch section into the opposite .095 holding slot (Fig. 19).

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 reel (Fig. 20).

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. 21).

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. 22).
   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 securely.

MAINTENANCE AND REPAIR INSTRUCTIONS

AIR FILTER MAINTENANCE

WARNING: To avoid serious personal injury, always turn the unit off and allow it to cool before you clean or service it.

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. 23).

2. Remove the air filter (Fig. 23).

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. 23).
   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. 23).

IDLE SPEED ADJUSTMENT
The idle speed of the engine is adjustable. An idle adjustment screw is between the air filter cover and the engine starter housing (Fig. 24).

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

4. The engine will not idle

5. The engine hesitates or stalls on acceleration.

WARNING: The cutting attachment will spin during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury.

• There is a loss of engine power
  Have the carburetor adjusted by an authorized service dealer.

REPLACING THE SPARK PLUG
Use replacement #753-06193, a Champion RDJ7J spark plug, or equivalent. The correct air gap is 0.025 inch (0.635 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-inch socket counterclockwise.
   WARNING: Do not sand blast, scrape or clean electrodes. Grit in the engine could damage the cylinder.

3. Replace a cracked, fouled or dirty spark plug. Set the air gap at 0.025 in. (0.635 mm) using a feeler gauge (Fig. 25).

4. Install a correctly-gapped spark plug in the cylinder head. Tighten by turning the 5/8-inch socket clockwise until snug.
   If using a torque wrench torque to: 110-120 in.•lb. (12.3-13.5 N•m) Do not over tighten.

CLEANING AND STORAGE

CLEANING

WARNING: To avoid serious personal injury, always turn the unit off and allow it to cool before you clean or service 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 a fueled unit 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.

Short Term Storage (1-2 weeks)

1. Store the unit in a horizontal position. If this is not possible, store the unit vertically with the engine at the top. Long-term Storage

2. Remove the fuel cap, tip the unit and drain the fuel into an approved container.
   NOTE: Do not use gasoline that has been stored for more than 30 days. Dispose of old gasoline in accordance with federal, state and local regulations.

3. Start the engine and allow it to run until it stalls. This ensures that all fuel has been drained from the carburetor.

4. Allow the engine to cool. Remove the spark plug and put 5 drops 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 unit after storage.

5. Thoroughly clean the unit and inspect it for any loose or damaged parts. Repair or replace damaged parts and tighten loose screws, nuts or bolts. The unit is ready for storage.

OPTIONAL ACCESSORY

ELECTRIC STARTER AND POWER START BIT™ FEATURES
This unit is designed to be started with an optional electric starter or Power Start Bit™, which are sold separately. If choosing to start the unit using one of these features or have questions, please contact your local retailer or call 1-800-828-5500 in the U.S.(1-800-668-1238 in Canada) for more information and purchasing. You may also go to www.troybilt.com or www.troybilt.ca.

TROUBLESHOOTING

fuel is visible
Engine is flooded| With the choke lever in position 3, squeeze the trigger and pull the starter rope
The fuel is old (over 30 days) and/or improperly mixed| Drain the fuel tank and add fresh, properly mixed fuel
Fouled spark plug| Replace or clean the spark plug
|
ENGINE WILL NOT IDLE|
Air filter is plugged| Replace or clean the air filter
The fuel is old (over 30 days) and/or improperly mixed| Drain the fuel tank and add fresh, properly mixed fuel
Improper idle speed| Adjust the idle speed
|
ENGINE WILL NOT ACCELERATE|
The fuel is old (over 30 days) and/or improperly mixed| Drain the fuel tank and add fresh, properly mixed fuel
Cutting head bound with grass| Stop the engine and clean the cutting head
Dirty air filter| Clean or replace the air filter
|
ENGINE LACKS POWER OR STALLS|
The fuel is old (over 30 days) and/or improperly mixed| Drain the fuel tank and add fresh, properly mixed fuel
Fouled spark plug| Replace or clean the spark plug
CUTTING HEAD WILL NOT ADVANCE LINE|
Cutting head bound with grass| Stop the engine and clean cutting head
Cutting head out of line| Refill with new line
Inner reel bound up| Rewind the inner reel
Cutting head dirty| Clean inner reel and outer spool
Line welded| Disassemble, remove the welded section and rewind
Line twisted when refilled| Disassemble and rewind the line
Not enough line is exposed| Push the bump knob and pull out line until 4 inches (102 mm) of line is outside of the cutting head
|
CUTTING LINE ADVANCES UNCONTROLLABLY|
Oil, cleaner or lubricant in cutting head| Clean and thoroughly dry the cutting head

IF FURTHER ASSISTANCE IS REQUIRED, CONTACT AN AUTHORIZED SERVICE DEALER.

SPECIFICATIONS

Engine Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air- Cooled, 2-Cycle
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.10 in. (2.6 cm)
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 cc
Operating RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,300+ rpm
Idle Speed RPM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,800 – 3,400 rpm
Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 in. (0.635 mm)
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel/Oil Mixture
Fuel/Oil Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40:1
Fuel Tank Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 fl. oz. (296 ml)
Approximate Unit Weight (No fuel, with cutting attachment, shield and D-handle). . . . . . . . . . . . 10 – 11 lbs. (4.5 – 5 kg)
Cutting Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bump Head™
Line Spool Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 in. (76.2 mm)
Trimming Line Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.095 in. (2.41 mm)
Cutting Path Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 in. (43.18 cm)

• All specifications are based on the latest product information available at the time of printing. We reserve the right to make changes at any time without notice

References

• Troy-Bilt: Lawn Mowers, Snow Blowers, Tillers and More
• Troy-Bilt: Lawn Mowers, Snow Blowers, Tillers and More

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