Troy-bilt TB4HB EC User Manual

TB4HB EC

4-Cycle Electric Start Capable Handheld Blower

Operator’s Manual

Removing Unit From Carton		Assemble The Unit

1	2
Remove all contents from	Insert the upper blower
the carton.	tube into the blower outlet
	and turn it clockwise until it
	locks into place.

3

Install the lower blower tube onto the upper blower tube and turn it clockwise until it locks into place.

4

Place the unit on a level surface, remove the oil plug from the crankcase, and pour the entire bottle of oil into the fill hole.

Assemble The Unit	Starting The Unit
	Primer
	Bulb

5	6 10 X	7	8
Place unit on a level surface.	Press primer bulb 10 times,	Move choke lever to	Crouch in starting position.
Fill fuel tank.	or until fuel is visible	Position 1.

Starting The Unit

Tools Required:	On/Off Switch	Throttle Control
• Flathead Screwdriver
		Primer Bulb
Blower Outlet		Starter Rope
Upper Blower Tube
Lower Blower Tube	Oil Plug

DIDN’T START?

Repeat the starting 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 operator’s manual for additional starting and troubleshooting information

		5 X			3-5 X
	9	10	11	12		13	14
	DO NOT squeeze throttle	Pull rope 5 times.	Move choke lever to	Pull rope 3-5 times to start		Continue to squeeze	Continue to squeeze
	control.		Position 2 .	engine. Squeeze throttle		throttle. Move choke lever	throttle. Warm unit for an
				control and allow unit to		to Position 3.	additional 60 seconds to
				warm up for 30-60 seconds.			complete warm-up. Unit
							may be used during this
							time.

ENGLISH — PAGE 1

ESPAÑOL — PAGE 9

IMPORTANT: READ 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

769-07792 P00

05/12

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/Stopping Instructions................................................................................................................	4
Operating Instructions............................................................................................................................	4
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© 2012 MTD SOUTHWEST INC, All Rights Reserved.

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.

Service on this unit, both within and after the warranty period, should only be performed by an authorized and approved service dealer.

RULES FOR SAFE OPERATION

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 #753-05900 Muffler Assembly

The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and their explanations, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures.

Symbol Meaning

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.

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.

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 THE U.S. OR 1-800-668-1238 IN CANADA

• IMPORTANT SAFETY INSTRUCTIONS •

READ ALL INSTRUCTIONS BEFORE OPERATING

GENERAL SAFETY INSTRUCTIONS

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.

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 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.

•Clear the area of children, bystanders, and pets. At a minimum, keep all children, bystanders, and pets outside a 50 feet (15 m) radius; there still may be a risk to bystanders from thrown objects. Bystanders should be encouraged to wear eye protection. If you are approached, stop the unit immediately.

•Squeeze the throttle control and check that it returns automatically to the idle position. Make all adjustments or repairs before using unit.

•Never store the unit, with fuel in the tank, inside a building where fumes may reach an open flame (pilot lights, etc.) or sparks (switches, electrical motors, etc.).

•Allow the engine to cool before storing or transporting. Be sure to secure the unit while transporting.

•Store the unit in a dry place, either 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 Cleaning and Storage instructions.

•Keep these instructions. Refer to them often and use them to instruct other users. If you loan this unit to others, also loan these instructions to them.

•Wear safety glasses or goggles that are marked as meeting ANSI Z87.1–1989 standards and are marked as such.

•Never run the unit without the proper equipment attached. Do not operate the unit without the blower tubes attached.

•To reduce the risk of hearing loss associated with sound level(s), always wear ear/hearing protection when operating this unit.

•Wear heavy long pants, boots, gloves, and a long sleeve shirt. Do not wear loose clothing, jewelry, short pants, sandals or go barefoot. Secure hair above shoulder level.

•Use the unit only in daylight or good artificial light.

•Keep outside surfaces free from oil and fuel.

•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. Refer to Starting/Stopping Instructions.

•Do not set unit on any surface except a clean, hard area while engine is running. Debris such as gravel, sand, dust, grass, etc. could be picked up by the air intake and thrown out by the discharge opening, damaging unit, property, or causing serious injury to bystanders or operator.

RULES FOR SAFE OPERATION

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

•Do not force unit. It will do the job better and with less likelihood of injury at a rate for which it was designed.

•Do not overreach or use from unstable surfaces such as ladders, trees, steep slopes, rooftops, etc. Always keep proper footing and balance.

•Always hold the unit with a firm grip when operating.

•Keep hands, face, and feet away from all moving parts. Do not touch or try to stop the impeller when it is rotating. Do not operate without guards in place.

•Do not put any object into openings. Do not use with any opening blocked; keep free of dirt, debris, and anything that may reduce the air flow.

•Do not touch the engine or muffler. These parts get extremely hot from operation, even after the unit is turned off.

•Do not operate the engine faster than the speed needed to do the job. Do not run the engine at high speed when not in use.

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

•Use only genuine factory replacement parts and accessories for this unit. These are available from your authorized service dealer. Use of any unauthorized parts or accessories could lead to serious injury to the user or damage to the unit, and void your warranty.

•If you strike or come into contact 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.

•To reduce fire hazard, replace faulty muffler and spark arrestor. Keep the engine and muffler free from grass, leaves, excessive grease or carbon build up.

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 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 unit. Move the unit at least 30 ft. (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. Operate this unit only in a well ventilated outdoor area.

BLOWER SAFETY INSTRUCTIONS

•Stop the engine for maintenance, repair, to install or remove the blower tubes. The unit must be stopped and the impeller no longer turning to avoid contact with the rotating blades.

•Never use this unit for spreading chemicals, fertilizers or other substances which may contain toxic materials.

•Never point the blower in the direction of bystanders, animals, windows or automobiles.

SPECIAL NOTE: EXPOSURE TO VIBRATIONS THROUGH PROLONGED USE OF GASOLINE POWERED HAND TOOLS COULD CAUSE BLOOD VESSEL OR NERVE DAMAGE IN THE FINGERS, HANDS, AND JOINTS OF PEOPLE PRONE TO CIRCULATION DISORDERS OR ABNORMAL SWELLING. Prolonged use in cold weather has been linked to blood vessel damage in otherwise healthy people. If symptoms occur such as numbness, pain, loss of strength, change in skin color or texture, or loss of feeling in the fingers, hands or joints, discontinue use of this tool and seek medical attention. An anti-vibration system does not guarantee avoidance of these problems.

Users who operate power tools on a regular basis must closely monitor their physical condition and the condition of this tool.

SAVE THESE INSTRUCTIONS

2

• SAFETY & INTERNATIONAL SYMBOLS •

This operator’s manual describes safety and international symbols and pictographs that may appear on this product. Read the operator’s manual for complete safety, assembly, operating and maintenance and repair information.

Symbol Meaning

•SAFETY ALERT SYMBOL

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

•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

•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.

•OIL

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

•ON/OFF CONTROL

ON / START / RUN

•ON/OFF CONTROL

OFF or STOP

•PRIMER BULB

Push primer bulb, fully and slowly, 10 times.

• CHOKE CONTROL

1.• FULL choke position

2.• PARTIAL choke position

3.• RUN choke position

•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.

• KEEP BYSTANDERS AWAY

WARNING: Keep all bystanders, especially children and pets, at least 50 feet (15 m.) from the operating area.

• HOT SURFACE

WARNING: Do not touch any metal engine components. The engine gets extremely hot from operation and may cause severe burns. Allow the unit to completely cool prior to any maintence or servicing.

• BLOWERS – ROTATING IMPELLER BLADES CAN CAUSE SEVERE INJURY

WARNING: Stop the engine and allow the impeller to stop before opening the vacuum door, installing or changing tubes or bag, or before cleaning or performing any maintenance.

KNOW YOUR UNIT

APPLICATIONS

•Cleaning yards, garages, driveways,

porches, patios, around walls,		Grip
fences and more
	On/ Off Switch	Throttle Control
TOOLS REQUIRED:		Spark Plug Cover
• Flathead Screwdriver

Upper Blower Tube
	Primer Bulb
	Air Filter
Oil Plug	Cover
Lower Blower Tube
Starter Rope Grip

Fuel Cap

ASSEMBLY INSTRUCTIONS

ASSEMBLING UNIT

Installing the Upper Blower Tube

1.Align the bump on the end of the upper blower tube with the bump slot on the bottom end of the blower outlet (Fig. 1).

2.Insert the upper blower tube into the blower outlet (Fig. 1).

3.Twist the upper blower tube clockwise until it locks into place (Fig. 1).

Installing the Lower Blower Tube

1.Align the bump slot on the top end of the lower blower tube with the bump on the end of the upper blower tube (Fig. 2).

2.Place the lower blower tube onto the upper blower tube (Fig. 2).

3.Twist the lower blower tube clockwise until tight (Fig. 2).

Blower

Outlet

Upper

Blower Tube

Bump

Fig. 1

Upper Blower

Tube

Lower
Blower
Tube	Bump

Removing the Upper Blower Tube

1.Hold the unit firmly.

2.Insert a flathead screwdriver into the tube lock. Twist the

screwdriver counterclockwise 1/4 turn and hold (Fig. 3).	Fig. 2
3. Grasp the upper blower tube and twist it counterclockwise
(Fig. 3).	Tube Lock

4. Pull the upper blower tube from the blower outlet.

Removing the Lower Blower Tube

1.Hold the upper blower tube firmly.

2.Grasp the lower blower tube and twist it counterclockwise until the lower blower tube unlocks from the upper blower tube.

3. Remove the lower blower tube from the upper blower tube.		Fig. 3

OIL AND FUEL INFORMATION

RECOMMENDED OIL TYPE

WARNING: OVERFILLING OIL CRANKCASE MAY CAUSE SERIOUS PERSONAL INJURY. Check and maintain the proper oil level in the crankcase; it is important and cannot be overemphasized. Check the oil before each use and change it as needed. See

Changing the Oil.

Using the proper type and weight of oil in the crankcase is extremely important. Check the oil before each use and change the oil regularly. Failure to use the correct oil, or using dirty oil, can cause premature engine wear and failure.

Use a high-quality SAE 30 weight oil of API (American Petroleum Institute) service class SF, SG, SH.

ADDING OIL TO CRANKCASE: INITIAL USE

NOTE: This unit is shipped without oil in the engine. To avoid damage to the unit, put oil in the crankcase prior to starting the unit.

This unit is supplied with one 2.03 fl.oz.

(60 ml) bottle of SAE 30 SF, SG, SH oil (Fig. 4).

NOTE: Save the empty oil bottle. It can be used to measure the correct amount during future oil changes. See Changing the Oil.

1.Unscrew the top of the bottle of oil and remove the paper seal covering the opening. Replace the top and cut the tip off the funnel spout (Fig. 4).

2.With the unit on a flat level surface, remove the oil plug (Fig. 5).

3.Pour the entire bottle of oil into the oil fill hole (Fig. 6).

NOTE: Never add oil to the fuel or fuel tank.

4.Wipe up any oil that may have spilled and reinstall the oil fill plug.

Check oil before each use and change as needed. Refer to

Checking the Oil Level.

Fig. 4

Oil Plug

Fig. 5

RECOMMENDED FUEL TYPE

Old fuel is the primary reason for poor unit performance. Be sure to use fresh, clean, unleaded gasoline.

NOTE: This is a four cycle engine. In order to avoid damage to the Oil Fill Hole

unit, do not mix oil with gasoline.	Fig. 6

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 form acids when stored. Use fresh fuel (less than 30 days old), when using alcohol-blended fuel.

Using Blended Fuels

WARNING: DO NOT USE E85 FUEL IN THIS UNIT.

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

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

•Always use fresh unleaded gasoline

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

•Drain tank and run the engine dry before storing unit

Using Fuel Additives

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.

The use of fuel additives, such as STA-BIL Gas Stabilizer or an equivalent, will inhibit corrosion and minimize the formation of gum deposits. Using a fuel additive can keep fuel from forming harmful deposits in the carburetor for up to six (6) months. Add 0.8 oz. (23 ml) of fuel additive per gallon of fuel according to the instructions on the fuel additive container. NEVER add fuel additives directly to the unit’s gas tank.

FUELING THE UNIT

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. Remove the fuel cap (Fig. 7).

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

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

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.

NOTE: Dispose of any old gasoline in accordance with federal,	Fuel Tank
state and local regulations.	Fig. 7

3

STARTING/STOPPING INSTRUCTIONS

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

WARNING: Avoid accidental starting. Make sure to be in the starting position when pulling the starter rope (Fig. 10). To avoid serious injury, the operator and unit must be in a stable position while starting.

STARTING INSTRUCTIONS

NOTE: When starting the unit, make sure it is not directed at bystanders or loose debris.

1.Check the oil level in the crankcase. Refer to Checking the Oil Level.

2.Fill the fuel tank with fresh, clean unleaded gasoline. 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.

3.Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb (Fig. 9). 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. 9).

NOTE: The unit should be started in idle. Do not squeeze the trigger until step 8 (Fig. 8).

5.Do not squeeze the trigger. Crouch in the starting position (Fig. 10). Pull the starter rope 5 times in a controlled motion.

6.Move the choke lever to Position 2 (Fig. 9).

7.Do not squeeze the trigger. Pull the starter rope 3-5 times in a controlled motion to start the engine.

8.Squeeze and hold the trigger, or press down the cruise control, and allow the engine to warm up for 30 to 60 seconds.

9.Continue to squeeze the trigger. Move the choke lever to Position 3 (Fig. 9) and continue warming the engine for an additional 60 seconds. The unit may be used during this time.

IF... the engine does not start, go back to step 3.

IF... the engine fails to start after a few attempts, move the

choke lever to Position 3 and pull the starter rope 3-8 times in a controlled motion. The engine should start. If not, repeat.

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

STOPPING INSTRUCTIONS

On/ Off Control

Throttle Control

Fig. 8

Choke

Lever

Primer Bulb

Fig. 9

Starting

Position

Fig. 10

1.Release your hand from the trigger. Allow the engine to cool down by idling.

2.Press and hold the On/Off switch in the OFF (O) position until the unit comes to a complete stop (Fig. 8).

IF USING THE OPTIONAL 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 6 of this manual about purchasing these accessories.)

STARTING INSTRUCTIONS

NOTE: When starting the unit, make sure it is not directed at bystanders or loose debris.

1.Check the oil level in the crankcase. Refer to Checking the Oil Level.

2.Fill the fuel tank with fresh, clean unleaded gasoline. 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.

3.Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb (Fig. 9). 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. 9).

NOTE: The unit should be started in idle. Do not squeeze the trigger until step 8 (Fig. 8).

5.Crouch in the starting position (Fig. 10). Place the electric starter or Power Start Bit™ into the side of the unit. Refer to the Operation section of the electric starter or Power Start Bit™ operator’s manual.

6.Do not squeeze the trigger. Press and hold the electric starter or drill’s ON (I) button for 2 seconds.

7.Move the choke lever to Position 2 (Fig. 9).

8.Do not squeeze the trigger. Press and hold the electric starter or drill’s ON (I) button for 2-second intervals until the unit starts.

9.Remove the electric starter or drill from the unit.

10.Squeeze and hold the trigger, or press down the cruise control, and allow the engine to warm up for 30 to 60 seconds.

11.Continue to squeeze the trigger. Move the choke lever to Position 3 (Fig. 9) and continue warming the engine for an additional 60 seconds. The unit may be used during this time.

IF...the engine does not start, go back to step 3.

IF...the engine fails to start after a few attempts, move the choke lever to 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, go back to step 7.

STOPPING INSTRUCTIONS

1.Release your hand from the trigger. Allow the engine to cool down by idling.

2.Press and hold the On/Off switch in the OFF (O) position until the unit comes to a complete stop (Fig. 8).

OPERATING INSTRUCTIONS

HOLDING THE BLOWER

Before operating the unit, stand in the operating position and check for the following:

•The unit in the right hand and on the right side of the body. Do not block the air intake which will affect the unit’s performance (Fig. 11).

•If the conditions are dusty, the operator is wearing a dust mask or face mask

•The unit is in good working condition

•The tubes are in place and secure

OPERATING TIPS

Using the Variable Speed Cruise Control

For longer periods of operation and to eliminate possible finger fatigue.

1.Move the variable speed cruise control toward the FAST position to incrementally increase or maintain the unit’s engine speed (Fig. 12). When the variable speed cruise control is pressed, the trigger will recede into the handle.

2.To decrease engine speed, move the variable speed cruise control to the SLOW position and the trigger will return to idle (Fig. 12).

Other Tips

Fig. 11

Cruise

Control SLOW

FAST

Fig. 12

•Always use a firm grip when holding the unit.

•To reduce the risk of hearing loss, hearing protection is required.

•Operate power equipment only at reasonable hours when people might not be disturbed. Comply with times listed in local ordinances. Usual recommendations are 9:00 am to 5:00 pm, Monday through Saturday.

•To reduce noise levels, operate the unit at the lowest possible speed to do the job.

•Use rakes and brooms to loosen debris before blowing.

•Watch for bystanders, open windows or cars; blow debris safely away.

•Use the curved tube extension so the unit can work closer to the ground.

•Clean up after using blowers and other equipment. Dispose of debris appropriately.

4

Fig. 19

MAINTENANCE AND REPAIR INSTRUCTIONS

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 a Troy-Bilt or other qualified service dealer.

NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by a Troy-Bilt or other qualified 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
Every 10 hours	Clean and oil air filter	p. 5
After 1st 10	Change oil	p. 5
hours	Check rocker arm to valve clearance and adjust	p. 5
Every 40 hours	Change oil	p. 5
	Check rocker arm to valve clearance and adjust	p. 5
	Check spark plug condition and gap	p. 5

CHECKING THE OIL LEVEL

The importance of checking and maintaining the proper oil level in the crankcase cannot be overemphasized. Check oil before each use:

1.Stop the engine and allow oil to drain into the crankcase.

2.Place the engine on a level surface.

3.Clean the area around the oil plug before removing it. Keep dirt, grass clippings, and other debris out of the engine.

4.Remove the oil plug (Fig. 14).

5.Look into the oil fill hole (use a flashlight if needed). The oil should be just touching the innermost thread (Fig. 13).

6.If the oil level is not touching the innermost thread on the oil fill hole, add a small amount of oil to the oil fill hole and recheck (Fig. 13). Repeat this procedure until the oil level reaches the innermost thread on the oil fill hole.

NOTE: Do not overfill the unit.

NOTE: Make sure the O-ring is in place on the oil plug when checking and changing the oil (Fig. 14).

CHANGING THE OIL

Change the oil while the engine is still warm. The oil will flow freely and carry away more impurities.

1.Remove the oil fill plug.

2.Pour the oil out of the oil fill hole and into a container by tipping the unit to a vertical position (Fig. 15). Allow ample time for complete drainage.

3.Wipe up any oil residue on the unit and clean up any oil that may have spilled. Dispose of the oil according to federal, state and local regulations.

4.Refill the crankcase with 2.03 fl.oz. (60 ml) of SAE 30 SF, SG, SH oil (Fig. 17).

NOTE: Use the bottle and spout saved from initial use to measure the correct amount of oil. The fill line on the bottle’s label measures approximately 2.03 fl.oz. (60 ml) (Fig. 16).

5.Check the level. See Checking the Oil Level.

6.Once full, replace the oil plug.

AIR FILTER MAINTENANCE

Cleaning the Air Filter

Failure to maintain the air filter will VOID the warranty.

Oil Fill Line

Fig. 13

Oil Plug

O-Ring

Oil Fill Hole

Fig. 14

Fig. 15

Fill Level

Fig. 16

1.To open the air filter cover, push the tab on the left side of the cover inward and pull the air filter cover slightly out and to the right (Fig. 18).

2.Remove the air filter (Fig. 18).

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

3.Wash the filter in detergent and water. Making sure to rinse the filter thoroughly and allow it to dry.

4.Lightly coat the filter with clean SAE 30 motor oil.

5.	Squeeze the filter to spread and remove excess oil.		Fig. 17
6.	Replace the filter.

NOTE: Operating the unit without the air filter will VOID the warranty.

7. To reinstall the air filter cover, position the hooks on the right side of the air filter cover into the slots at the right side of the back plate (Fig. 18).

8. Swing the cover to the left and press closed so the air filter
cover tab snaps into the slot on the back plate (Fig. 18).	Slot	Tab
	Air Filter	Air Filter Cover
		Fig. 18

MAINTENANCE AND REPAIR INSTRUCTIONS

IDLE SPEED ADJUSTMENT
The idle speed of the engine is adjustable. An idle adjustment	Idle Adjustment
screw is between the air filter cover and the engine starter housing
(Fig. 19).	Screw
NOTE: Careless adjustments can seriously damage to the unit. A
qualified service dealer should make carburetor adjustments.

If, after checking the fuel and cleaning the air filter, the engine still

will not idle, adjust the idle speed screw as follows:

1. Start the engine and warm up according to the Starting/ Stopping Instructions.

2. Release the trigger and let the engine idle. If the engine stops, insert a small Phillips screwdriver in between the air filter cover

and the engine cover (Fig. 19). Turn the idle speed screw 1/8 of a turn clockwise at a time until the engine idles smoothly.

Checking the fuel, 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

take the unit to a qualified service dealer.

ROCKER ARM CLEARANCE

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

This requires disassembly of the engine. If you feel unsure or unqualified to perform this, take the unit to a qualified service dealer.

•	The engine must be cold when checking or adjusting the
	rocker arm clearance.	Screws	Screws
•	This task should be performed inside, in a clean, dust free
	area.
1.	Remove the 8 engine cover screws with the appropriate tool
	(Fig. 20), then remove the cover.	Fig. 20
NOTE: Make sure to store the screws so that they can be
	reinstalled into their original holes.	Rocker
2.	Disconnect the spark plug wire.
		Arm
3.	Clean dirt from around the spark plug and rocker arm cover.	Cover	Screw
	Remove the spark plug from the cylinder by turning a 5/8 in.
	socket counterclockwise.	Spark
4.	Remove the screw holding the rocker arm cover with the	Plug
		Hole
	appropriate tool (Fig. 21). Remove the rocker arm cover and
	gasket.
5.	Turn the flywheel slowly to bring the piston to the top of its	Fig. 21
	travel (known as top dead center). Check that:
•	The piston is at the top of its travel by looking in the spark	Adjustment Nut	Rocker Arm
	plug hole (Fig. 21)

•Both rocker arms move freely, and both valves are closed.

If these statements are not true, repeat this step.

6.Slide the feeler gauge between the rocker arm and the valve return spring. Measure the clearance between the valve stem

and rocker arm (Fig. 22). Measure both the intake and exhaust	0.003–0.006 in.
valves.	(0.076–0.152 mm)	Valve
The recommended clearance for both intake and exhaust is .003	Feeler Gauge	Stem
– .006 in. (.076 – 0.152 mm). Use a standard automotive .005 in.	Fig. 22
(0.127 mm) feeler gauge. The feeler gauge should slide between

the rocker arm and valve stem with a slight amount of resistance, without binding (Fig. 22.) 7. If the clearance is not within specification:

a.Turn the adjusting nut using a 5/16 inch (8 mm) wrench or nut driver (Fig. 22).

• To increase clearance, turn the adjusting nut counterclockwise.

• To decrease clearance, turn the adjusting nut clockwise.

b.Recheck both clearances, and adjust as necessary.

8.Reinstall the rocker arm cover using a new gasket (Fig. 21). Torque the screw to: 20–30 in•lb (2.2–3.4 N•m).

9.Check the spark plug and reinstall. See Replacing the Spark Plug.

10.Reinstall the spark plug wire.

11.Reinstall the engine cover. Check alignment of the cover before tightening the screws. Tighten screws.

NOTE: Make sure that the screws are reinstalled into their original holes (Fig. 20).

REPLACING THE SPARK PLUG

Use a replacement part number 753-05784 or Champion® spark plug #RDZ4H. The correct spark gap is 0.025 in. (0.635 mm).

1.Stop the engine and allow it to cool.

2.Open the spark plug cover (Fig. 23).

3.Grasp the plug wire firmly and pull the cap from the spark plug.

4.Clean dirt from around the spark plug. Remove the spark

plug from the cylinder head by turning a 5/8 in. socket
counterclockwise.	Fig. 23

WARNING: Do not sand blast, scrape or clean spark plug electrodes. Grit in the engine could damage the cylinder.

5.	Replace cracked, fouled or dirty spark plug. Set the spark gap
	at 0.025 in. (0.635 mm) using a feeler gauge (Fig. 24).
6.	Install a correctly-gapped spark plug in the cylinder head. Turn	0.025 in.
	the 5/8 in. socket clockwise until snug.	(0.635 mm)
7.	Reinstall the spark plug cover.
If using a torque wrench, torque to:				Fig. 24
110-120 in.•lb. (12.3-13.5 N•m) Do not over tighten.

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