Troy-Bilt TB42 Owner's Manual

TB42 BC

2-Cycle Trimmer

Operator’s Manual

Removing Unit From Carton

Assemble The Unit

1	2
Remove all contents from	Remove cap from end of
the carton.	lower boom. Push cutting
	attachment add-on into
	coupler. Turn coupler knob
	clockwise to tighten.

Assemble The Unit

40:1

1 Gallon

3.2 oz

4

Mix thoroughly in separate fuel can:

–3.2 fl. oz. of 2-cycle engine oil

–1 gallon of unleaded gasoline

NOTE: Do not mix directly in fuel tank.

5

Place unit on a level surface. Fill fuel tank.

Starting The Unit

3

Place the J-handle between the top and middle clamps, slide the 4 screws through the clamps, and place the assembly 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 screws evenly until the J-handle is secure.

	Electric Starter or	Starter Rope
	Power Start Bit Optional!
	THESE OPTIONAL ACCESSORIES	Fuel Cap
	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.	On/ Off Switch
	Information may also be found at
	www.troybilt.com

Throttle Control

J-Handle

Ez-Link™

	Starting The Unit	ASSEMBLY TOOLS
		REQUIRED:

	Primer	Lever
	Bulb		•	Phillips screwdriver

		Need Help?
		Call 1-800-828-5500
10 X	7
6		DIDN’T START?
Press primer bulb 10 times,	Move choke lever to
or until fuel is visible	Position 1.	Repeat these instructions.
		IF engine fails to start after 2 attempts,
	Cutting Head Shield	move choke lever to position 3 and pull
		the starter rope until engine starts
		IF unit still fails to start, refer to operator’s
		manual for additional starting and
		troubleshooting information

Lever

Choke Lever

			5 X		3-5 X
	8	9	10	11		13	14
					12
	Crouch in starting position.	SQUEEZE and HOLD	Pull rope 5 times.	Move choke lever to	Pull rope 3-5 times to start	Continue to squeeze	Continue to squeeze
		throttle for ALL further		Position 2 and squeeze	engine. Run unit for 30-60	throttle. Move choke lever	throttle. Run unit for an
		steps.		throttle.	seconds to warm up.	to Position 3.	additional 60 seconds to
							complete warm-up. Unit
							may be used during this
							time.

English — Page 1

Español — Page 8

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

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.

Copyright© 2011 MTD SOUTHWEST INC, All Rights Reserved.

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.

SAVE 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: 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.

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

• IMPORTANT SAFETY INSTRUCTIONS •

CALIFORNIA PROPOSITION 65

WARNING: Engine exhaust, som ofe 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.

• 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

• 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.

2

		KNOW YOUR UNIT
	APPLICATIONS		Choke Lever
	As a trimmer:	Spark Plug
	• Cutting grass and light weeds.		Starter
	• Edging		Rope
		Muffler	Grip
	• Decorative trimming around trees,
	fences, etc.
	ASSEMBLY TOOLS REQUIRED	Shaft Grip
	• Phillips screwdriver
			Fuel Cap
		On/Off Control	Air Filter
			Cover

J-Handle

EZ-Link™	Throttle
	Control

Primer Bulb

Shaft Housing

Cutting Head

Cutting Head Shield

ASSEMBLY INSTRUCTIONS

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

INSTALL AND ADJUST THE J-HANDLE
On some units, the J-handle may be pre-		Screws (4)
	installed. In this case, loosen the screws and
	go to step 5.
1.	Place the J-handle between the top and	Top Clamp
	middle clamp pieces (Fig. 1).
2.	While holding the three pieces together, install
	the four (4) screws through the top clamp and	J-Handle
	into middle clamp.
NOTE: The holes in the top and middle clamp		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	Bottom Clamp
	recess with a finger. Start screws with a large
	Phillips screwdriver. Do not tighten until you	Nuts (4)
	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	Fig. 1
	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.	Decal
7.	Tighten the clamp screws evenly, until the J-handle is secure.

ASSEMBLY INSTRUCTIONS

REMOVE AND INSTALL THE CUTTING ATTACHMENT SHIELD

WARNING: The cutting attachment	Cutting	Screws (3)
shield should NOT be installed when	Attachment
	Shield
operating the unit with a blade. Remove the
cutting attachment shield before removing
or installing the blade.
Remove the cutting attachment shield when		Gear Housing
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.

Fig. 6

INSTALL THE HARNESS

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 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).

Fig. 7

Support

Fitting

Fig. 8			Fig. 9

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

WARNING: To avoid serious personal injury, the cutting attachment shield MUST be in place at all times while operating the unit as a grass trimmer.

Install the cutting attachment shield on the shield mount by inserting the three (3) screws into the shield mount. Tighten securely with a flat blade screwdriver (Fig. 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: The gear housing gets hot with use. It can result in injury to the operator. The housing remains 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	Output Shaft
	1. Align the shaft bushing hole with the locking rod	Output Shaft Bushing
	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).	Shaft Bushing Hole
	3. While holding the locking rod, remove the cutting
	attachment by turning it clockwise off of the	Locking Rod
	output shaft (Fig. 12). Store the cutting attachment	Slot
	for future use.	Locking Rod
	NOTE: The blade retainer under the cutting
	attachment will be used when installing the
	cutting blade.
		Fig. 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	EZ-Link™ Coupler				Release Primary Hole
1. Turn the knob counterclockwise to loosen					Button
(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).	Upper Shaft	Lower Shaft
Guide Recess	Housing	Housing
Fig. 3	Fig. 4
INSTALLING THE ADD-ON	90˚ Edging Hole
NOTE: To make installing or removing the add-on easier, place the unit on
	(Trimmer Only)

the ground or on a work bench.

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

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

Fig. 11

Cutting Attachment

Locking Rod

Slot

Locking Rod

Fig. 12

3

ASSEMBLY INSTRUCTIONS

Install the Cutting Blade

WARNING: To avoid serious personal injury, always wear gloves while handling or installing the blade.

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

Cutting Blade

Pilot Hole

WARNING: If the cutting blade is offcenter, the unit will vibrate and the blade may fly off, causing possible serious personal 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.

Shield Mount

Output Shaft

Bushing

Locking Rod

Fig. 13

Pilot Hole

Fig. 14

1/4 - 1/2 turn Counterclockwise

Fig. 15

WARNING: To avoid serious personal injury or damage to the unit, do not start or operate this unit with the locking rod in the locking rod slot.

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

REMOVE THE CUTTING BLADE AND INSTALL THE CUTTING ATTACHMENT

WARNING: To avoid serious personal injury, always wear gloves while handling or installing the 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 closedend 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).	Clockwise
Place the blade retainer on
the output shaft with the flat
surface against the output	Fig. 16
shaft bushing (Fig. 17). Screw
the cutting attachment counterclockwise	Cutting Attachment
onto the output shaft. Tighten securely.

NOTE: The blade retainer must be installed on the output shaft in the position shown for the cutting attachment to work correctly.

2.Remove the locking rod.

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

Shield.	Blade Retainer
	Output Shaft Bushing

Locking Rod

Fig. 17

WARNING: To avoid serious personal injury, the cutting attachment shield MUST be in place at all times while operating the unit as a trimmer.

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

	•	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.
					UNLEADED GAS	2 CYCLE OIL
					1 GALLON US	3.2 FL. OZ.
	The bottle of 2-cycle oil contains a fuel additive which will help inhibit
					(3.8 LITERS)	(95 ml)
	corrosion and minimize the formation of gum deposits. It is
	recommended to use our 2-cycle oil with this unit.				1 LITER	25 ml
	If unavailable, use a good 2-cycle oil designed for air-cooled engines				MIXING RATIO - 40:1
	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.

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.
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.

STARTING AND STOPPING INSTRUCTIONS

WARNING: Operate this unit in a well-ventilated outdoor area.	OFF (O)
Carbon monoxide exhaust fumes can be lethal in a confined area.		ON (I)
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.
		Throttle
STARTING INSTRUCTIONS		Control
1. Mix fuel with oil. Fill fuel tank with fuel/oil mixture. See Oil and Fuel		Fig. 18
Mixing Instructions.	Choke Lever	Primer Bulb

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).	Fig. 19
5.	Crouch in the starting position (Fig. 20). Squeeze the throttle control	Starting Position
	lever. Pull the starter rope 5 times.	Starter
6.	Place the choke lever in Position 2 (Fig. 19)	Rope
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.	Fig. 20
	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).

4

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 J- 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

TIPS FOR BEST TRIMMING RESULTS

• Keep the cutting head parallel to the ground.

Fig. 21

•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.
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		Fig. 22

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	Fig. 23
	spins, which increases the cutting action.
•	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

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.

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: Never use metal-reinforced line, wire, chain or rope. These can break off and 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.	Fig. 26
Use Figure 28 to identify the
inner reel you have.

Outer Spool

Spring

Inner Reel

Bolt

Bump Knob

Fig. 25

Indexing Teeth

Fig. 27

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		Slotted
trimming line, loop it into two equal lengths.		Holes
Insert each end of the line through one of the	For Use with	For Use with SplitLine™
two holes in the inner reel (Fig. 29). Pull the line	Single Line ONLY	or Single Line
through the inner reel so that the loop is as		Fig. 28
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.

Loop

Fig. 29

Fig. 30

Fig. 31

Holding

Slots

Fig. 32

Spring

Fig. 33

5