Troy-Bilt TB144 User Manual

Operator’s Manual

4-Cycle Garden Cultivator

TB144

SAVE THESE INSTRUCTIONS

For service call 1-800-828-5500 in the United States, or 1-800-668-1238 in Canada to obtain a list of authorized service

dealers near you. For more details about your unit, visit our website at www.troybilt.com.

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

THIS PRODUCT IS COVERED BY ONE OR MORE U.S. PATENTS. OTHER PATENTS PENDING.

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

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.

WARNING: When using the unit, you must follow

the safety rules. 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.

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 #791-180890 Spark Arrestor Kit.

CALIFORNIA PROPOSITION 65 WARNING

P/N 769-02831 (1/07)

TABLE OF CONTENTS

Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

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

Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Starting/Stopping Instructions . . . . . . . . . . . . . . . . . . . . . .8

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Maintenance and Repair Instructions . . . . . . . . . . . . . . .10

Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E17

WARNING

THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS

CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO

CAUSE CANCER, BIRTH DEFECTS OR OTHER

REPRODUCTIVE HARM.

READ ALL INSTRUCTIONS BEFORE OPERATING

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

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

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

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

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

• Carefully inspect the area before starting the unit. Remove all debris and hard or sharp objects such as glass, 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 you are approached, stop the unit immediately.

• Use only 0.105 inches (2.67 mm) diameter original equipment manufacturer replacement line. Never use metal-reinforced line, wire, or rope. These can break off and become dangerous projectiles.

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

SAFETY WARNINGS FOR GAS UNITS

• Store fuel only in containers specifically designed and approved for the storage of such materials.

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

• Always stop the engine and allow it to cool before filling the fuel tank. Never remove the cap of the fuel tank, or add fuel, when the engine is hot. Never operate the unit without the fuel cap securely in place. Loosen the fuel tank cap slowly to relieve any pressure in the tank.

• Add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. Slowly remove the fuel cap only after stopping engine. Do not smoke while fueling or mixing fuel. Wipe up any spilled fuel from the unit immediately. Always wipe unit dry before using.

• Move the unit at least 30 feet (9.1 m) from the fueling source and site before starting the engine. Do not smoke or allow sparks and open flames near the area while adding fuel or operating the unit.

WHILE OPERATING

• 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.

• Wear safety glasses or goggles that meet ANSI Z87.1 standards and are marked as such. Wear ear/hearing protection when operating this unit. Wear a face or dust mask if the operation is dusty.

• Wear heavy, long pants, boots, gloves and a long-sleeved shirt. 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/Stopping Instructions.

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

• Use extreme caution when reversing or pulling the unit towards you.

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

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

• Keep hands, face, and feet at a distance from all moving parts. Do not touch or try to stop the tines when they are rotating.

• 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 cultivate. Do not run the engine at high speed when you are not cultivating.

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

• If you strike or become 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 the unit, switch the engine to off, and disconnect the spark plug for maintenance or repair.

• Use only original equipment manufacturer 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.

• Keep unit clean of vegetation and other materials. They may become lodged between the tines and guard.

• 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.

AFTER USE

• Clean tines with a 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, 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 someone this unit, also loan them these instructions.

SAVE THESE INSTRUCTIONS

RULES FOR SAFE OPERATION

• IMPORTANT SAFETY INSTRUCTIONS •

WARNING: Gasoline is highly flammable, and its

vapors can explode if ignited. Take the following precautions:

RULES FOR SAFE OPERATION

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 and maintenance and repair information.

SYMBOL MEANING

• ON/OFF STOP CONTROL

ON / START / RUN

• WARNING - READ OPERATOR'S MANUAL

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.

• ON/OFF STOP CONTROL

OFF or STOP

SYMBOL MEANING

• SAFETY ALERT SYMBOL

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

• WEAR EYE AND HEARING PROTECTION WARNING: Thrown objects and loud noise can

cause severe eye injury and hearing loss. Wear eye protection meeting ANSI Z87.1 standards and ear protection when operating this unit. Use a full face shield when needed.

• 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: Do not operate without the cutting

attachment shield in place. Keep away from the rotating cutting attachment.

• HOT SURFACE WARNING

Do not touch a hot muffler, gear housing or cylinder. You may get burned. These parts get extremely hot from operation. They remain hot for a short time after the unit is turned off.

• UNLEADED FUEL

Always use clean, fresh unleaded fuel

• OIL

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

• GARDEN CULTIVATORS – ROTATING TINES CAN CAUSE SEVERE INJURY

WARNING: Stop the engine and allow the tines to

stop before installing or removing tines, or before cleaning or performing any maintenance. Keep hands and feet away from rotating tines.

• CHOKE CONTROL

1. • FULL choke position

2. • PARTIAL choke position

3. • RUN choke position

Tine Guard

Cultivator

Tines

Primer Bulb

Muffler

Handlebar

Knob

Starter Rope Grip

Handlebar

Throttle

Control

Choke

Control

Edger

Wheel

Edger Blade

STOP/OFF (O)

START/ON (I)

Wheel Support

Bracket

APPLICATIONS

• Cultivating sod and light to medium soil

• Cultivating in garden areas, around trees, etc.

• Edging

KNOW YOUR UNIT

NOTE: Before setting up your cultivator / edger, disconnect

the spark plug wire from the spark plug.

POSITIONING THE HANDLEBARS

1. Loosen the two knobs on the inside of the handlebars (Fig.

1).

2. With the unit upright, swing the handlebars up into the operating position (Fig. 1).

NOTE: Take care not to pinch the throttle cable or switch

wires when positioning the handlebar.

3. Tighten the knobs to secure the handlebars in place.

NOTE: Do not over-tighten the knobs.

4. Reconnect the spark plug wire to the spark plug.

ADJUSTING TINE DEPTH

To adjust the wheel support bracket proceed as follows:

1. Stop engine and disconnect spark plug to avoid accidental starting.

2. Remove cotter pin from the clevis pin and slide clevis pin out of tailpiece bracket (Fig. 3).

3. Slide the wheel support bracket up or down in the tailpiece, aligning the holes to the desire height.

4. Place the clevis pin through the hole and secure with cotter pin.

ATTACHING THE EDGER WHEEL AND BLADE

To convert the cultivator to an edger proceed as follows:

1. Push the On/Off switch to Off (O) position to stop engine and tines and disconnect spark plug to avoid accidental starting.

NOTE: It may be necessary to lay the cultivator / edger back in

a horizontal position on a flat level surface with the upper handle touching the ground.

2. Remove the click pin from each end of the tine shaft and slide the tines off the shaft.

3. Slide the edger wheel, with the hub facing inward, onto the right side of the tine shaft and secure with the click pin in the inside hole (Fig. 4).

Clevis Pin

Cotter Pin

Wheel Support Bracket

Tailpiece Bracket

Fig. 3

Fig. 1

Handlebar

Knob

Handlebars

Washer

Hole

Bolt

Fig. 2

ASSEMBLY INSTRUCTIONS

Fig. 4

Edger Guide

Line

Click Pin

Hub

Edger Blade

Edger Wheel

Tine Shaft

4. Slide the edger blade with the hub facing out onto the left side of tine shaft and secure with the click pin in the inside hole (Fig. 4).

5. The edger guide line indicates where cutting will occur. Guide the unit along a flowerbed, sidewalk, or driveway so the edger guide line is above the desired line of cut.

RECOMMENDED OIL TYPE

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. Using incorrect or 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 crankcase. In

order to avoid damage to the unit, put oil in the crankcase before attempting to start unit.

Your unit is supplied with one 3.04 fluid oz. (90 ml.) bottle of SAE 30 SF, SG, SH oil (Fig. 5).

NOTE: Save the bottle to measure the correct amount for

future oil changes. See Changing the Oil.

NOTE:

Your new 4-Cycle cultivator is shipped for operation in conditions above 40°F (4°C). For cold weather operation, where temperatures fall below 40°F (4°C), use a high-quality SAE 10W30 weight oil of API (American Petroleum Institute) service class SF, SG, SH.

1. Unscrew the oil bottle top and remove the paper seal covering the opening. Replace the top and cut the tip off the funnel spout (Fig. 5).

2. Place the unit on a flat level surface with the cultivator in a horizontal position (Fig. 6).

3. Remove the oil plug / dipstick from the crankcase (Fig. 7).

4. Pour the entire bottle of oil into the oil fill hole (Fig. 8).

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

5. Wipe up any oil that may have spilled and reinstall the oil fill plug / dipstick.

The importance of checking and maintaining the proper oil level in the crankcase cannot be overemphasized. Check oil before each use and change as specified in the Maintenance Schedule.

Fig. 5

Fig. 7

Funnel Spout

Fig. 8

Oil Fill

Fig. 6

Oil Fill Plug/Dipstick

Oil Fill

Plug/Dipstick

Oil Fill Hole

O-Ring

OIL AND FUEL INFORMATION

CAUTION: OVERFILLING OIL CRANKCASE

MAY CAUSE PRODUCT DAMAGE. Check and maintain the proper oil level in the crank case; it is important and cannot be overemphasized. Check the oil before each use and change it as needed. See Changing the Oil.

RECOMMENDED FUEL TYPE

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

NOTE: This is a four cycle engine. In order to avoid damage to

the unit, do not mix oil with gasoline.

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 form acids when stored. When using alcohol-blended fuel, use fresh fuel that is less than 60 days old.

Using Blended Fuels

If you choose to use a blended fuel, or if its use is unavoidable, follow recommended precautions:

• Always use fresh unleaded gasoline

• Use Sta-Bil®or an equivalent

• Drain tank and run the engine dry before storing unit

Using Fuel Additives

The use of fuel additives, such as Sta-Bil®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 to an approved

gas container according to the instructions on the container. NEVER add fuel additives directly to the unit's gas tank.

FUELING THE UNIT NOTE: Fill or add fuel to the tank only when the cultivator is in

a horizontal position (Fig. 9).

1. Remove fuel cap. Remove the tag from the fuel tank neck.

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

NOTE: Do not overfill 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 the old gasoline in accordance to Federal,

State and Local regulations.

Fig. 9

Fuel Cap

OIL AND FUEL INFORMATION

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: Add fuel in a clean, well ventilated

outdoor area. Wipe up any spilled fuel immediately. Avoid creating a source of ignition for spilt fuel. Do not start the engine until fuel vapors dissipate.

WARNING:

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

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.

3. Put the On/Off Stop Control in the ON [I] position (Fig. 10).

4. Place the choke lever in Position 1 (Fig. 11).

5. 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. 11). If you can’t see fuel in the bulb, press and release the bulb as many times as it takes before you can see fuel in it.

6. Hold the throttle and handlebar with one hand and grab the starter rope with your other hand. Use your foot to hold down the cultivator (Fig. 12).

NOTE: Tilt the unit back slightly to bring the tines off the

ground when starting.

7. While squeezing the throttle control, pull the starter rope with a smooth and steady pull. Repeat this 5 times.

8. Move the choke lever to Position 2.

9. While squeezing the throttle control, pull the starter rope in the same manner as explained in Step 7. Pull 1 to 3 times to start the engine.

10. Keep the throttle squeezed and allow the engine to warm up for 15 to 30 seconds.

11. Place the choke lever in Position 3. Release the throttle control to the idle position and begin operation.

IF...

The engine does not start, repeat Steps 4 - 11.

IF...

The engine fails to start after a few attempts, place the choke lever in Position 3 and squeeze the throttle control. Pull the starter rope 3 to 8 times. The engine should start. If not, continue pulling starter rope until the engine starts.

IF WARM...

If the engine is already warm, make sure the

On/Off Stop control is in the ON position and start the unit with the choke lever in Position 2. After the unit starts, move the choke lever to Position 3.

STOPPING INSTRUCTIONS

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

2. Put the On/Off Stop Control in the OFF (O) position.

STARTING INSTRUCTIONS

Primer Bulb

Choke Lever

Fig. 10

Throttle

Control

ON (I)

Fig. 11

OFF (O)

Position 3

Position 1

Position 2

STARTING / STOPPING INSTRUCTIONS

WARNING: Avoid accidental starting. Make sure

you are in the starting position when pulling the starter rope (Fig. 12).

To avoid serious injury, the operator and

unit must be in a stable position while starting.

WARNING:

Operate this unit only in a wellventilated outdoor area. Carbon monoxide exhaust fumes can be lethal in a confined area.

Fig. 12

Starter

Rope

Throttle

Control

TRANSPORTING THE UNIT

1. Stop the engine.

2. Tilt the unit back until the tines clear the ground.

3. Push or pull the unit to the next location to be cultivated.

Fig. 13

OPERATING TIPS

1. Move the cultivator to the work area prior to starting the engine. Transport the cultivator by pushing or pulling it along on its wheels.

2. Start the unit by following the Starting Instructions.

3. With the engine running and the tines off the ground, depress the throttle control to increase the engine speed.

4. While holding the upper handle with both hands, slowly lower the cultivator until the tines make contact with the ground (Fig. 13).

5. As cultivating action begins, tilt the cultivator up slightly using the handle so that the tines can penetrate the ground.

6. Once the ground has been broken, continue at a moderate pace until you are familiar with the controls and the handling of the cultivator.

7. If the tines are digging too deep or not deep enough, adjust the wheel bracket as described in Adjusting Tine Depth.

OPERATING INSTRUCTIONS

WARNING: Dress properly to reduce the risk of

injury when operating this unit. Do not wear loose clothing or jewelry. Wear eye and ear/hearing protection. Wear heavy long pants, boots and gloves. Do not wear short pants, sandals or operate barefoot.

WARNING: To prevent serious personal injury,

never pick-up or carry the unit while the engine is running.

WARNING: To prevent serious personal injury,

use extreme caution when reversing or pulling the unit towards you.

WARNING: To prevent serious personal injury,

always stop the engine when operation is delayed or when transporting the unit from one location to another

Click Pin

“A” Tine

Fig. 14

TINE REMOVAL AND REPLACEMENT

All 4 tines should be replaced at the same time because they will wear evenly through normal use. Work on one side at a time.

1. Put the On/Off Stop Control in the STOP (O) position and disconnect the spark plug wire.

NOTE: It may be necessary to lay the cultivator back in a

horizontal position on a flat level surface with the upper handle touching the ground.

2. Remove the click pin from each end of the tine shaft. Slide the tines off of the shaft (Fig. 14).

“B” Tine

Hubs

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. Call 1-800-520-5520 for more information.

NOTE: Maintenance, replacement, or repair of the emission

control devices and system may be performed by a Troy-Bilt or other qualified service dealer. Call 1-800520-5520 for more information.

FREQUENCY MAINTENANCE REQUIRED REFER TO

Before starting engine

Fill fuel tank with fresh fuel Check oil

Page 9 Page 13

Every 10 hours Clean and re-oil air filter Page 14

First change at 10 hours Every 25 hours thereafter Every 25 hours

Change oil Change oil Clean spark arrestor

Page 13 Page 13 Page 17

Every 25 hours Check spark plug condition and gap Page 17

3. Clean and oil the shaft.

4. Slide on the new tines with the hubs facing out. The four tines are marked with the letters “A” or “B.”

5. Place one “A” tine and one “B” tine onto the shaft.

6. Secure the new tines to the shaft with click pins. It may be necessary to wash the dirt off the tines and shaft for ease of removal.

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 unit on a flat, level surface to get a proper oil level reading (Fig. 9).

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

4. Remove the oil fill plug/dipstick and wipe off oil. Reinsert it all the way back in.

5. Remove the oil fill plug/dipstick and check the oil level. Oil should be up to the top of the dipstick (Fig. 15).

6. If the level is low, add a small amount of oil to the oil fill hole and recheck (Fig. 16). Repeat this procedure until the oil level reaches the top of the dipstick.

NOTE: Do not overfill the unit.

Top of Dipstick

O-Ring

Oil Fill Plug/Dipstick

Fig. 15

Full

Add 1.4-1.5 Oz.

(41-44 ml)

MAINTENANCE AND REPAIR INSTRUCTIONS

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.

WARNING: To prevent serious personal injury,

always wear heavy gloves when handling the tines.

CAUTION: To prevent extensive engine wear

and damage to the unit, always maintain the proper oil level in the crankcase. Never operate the unit with the oil level below the bottom of the dipstick.

CHANGING THE OIL

For a new engine, change the oil after the first 10 hours of operation. Change the oil while the engine is still warm. The oil will flow freely and carry away more impurities.

1. Unplug spark plug wire to prevent accidental starting.

2. Remove the oil fill plug/dipstick.

3. Pour the oil out of the oil fill hole and into a container by tipping the unit to a vertical position (Fig. 17). Allow ample time for complete drainage.

Fig. 17

Fig. 16

NOTE: Make sure the O-ring is in place on the oil fill plug/dipstick

when checking and changing the oil (Fig. 16).

4. 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.

5. Refill the crankcase with 3.04 fluid ounce (90 ml) of SAE 30 SF, SG, SH oil.

NOTE: Use the bottle and spout saved from initial use to measure

the correct amount of oil. Pour fresh fuel into the bottle and fill it to the top of the label. The top of the label on the bottle measures approximately 3.04 ounces (90 ml). Check the level with the dipstick. If the level is low, add a small amount of oil and recheck. Do not overfill (Fig. 18).

6. Replace the oil fill plug/dipstick.

7. Reconnect the spark plug wire.

Fill Level

Fig. 18

Oil Fill Plug/Dipstick

Oil Fill Hole

O-Ring

MAINTENANCE AND REPAIR INSTRUCTIONS

CAUTION:

Wear gloves to prevent injury when

handling the unit.

AIR FILTER MAINTENANCE Cleaning the Air Filter

Clean and re-oil the air filter every 10 hours of operation. It is an important item to maintain. Failure to maintain your air filter properly can result in poor performance or can cause permanent damage to your engine.

1. Open the air filter cover. Push the tab on the left side of the cover in, swing the air filter cover out and off the air filter housing (Fig. 19).

2. Remove the air filter and the screen that sits behind it (Fig. 19).

Air Filter

Screen

Hooks

Slot

Choke Lever

Air Filter Cover

Air Filter Housing

Tab

Fig. 19

WARNING: To avoid serious personal injury,

always turn the unit off and allow it to cool before you clean or service it.

3. Wash the filter in detergent and water (Fig. 20). Rinse the filter thoroughly and allow it to dry.

4. Apply enough clean SAE 30 motor oil to lightly coat the filter (Fig. 21).

Fig. 20

CARBURETOR ADJUSTMENT

The idle speed of the engine is adjustable. An idle adjustment screw is reached though a hole in the top of the engine cover (Fig. 22).

NOTE: Careless adjustments can seriously damage your unit.

For carburetor adjustments, take your unit to a Sears or other qualified service dealer.

Adjust Idle Speed Screw

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 let it run at a high idle for a minute to warm up. Refer to Starting/Stopping Instructions.

NOTE: Ensure the tines are not in contact with the ground

when adjusting the idle.

2. Release the throttle trigger and let the engine idle. If the engine stops, insert a small phillips or flat blade screwdriver into the hole in the air filter/muffler cover (Fig. 22). Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as needed) until the engine idles smoothly.

NOTE: The tines should not rotate when the engine idles.

3. If the tines rotate when the engine idles, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as needed), to reduce idle speed.

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

Have the carburetor adjusted by a Troy-Bilt or other qualified service dealer.

Fig. 21

Remove

Screws

Engine Cover

Fig. 23

Muffler

ROCKER ARM CLEARANCE

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

NOTE: Inspect the valve to rocker arm clearance with a feeler

gauge after the first 10 hours of operation and then every 25 hours of operation thereafter.

• The engine must be cold when checking or adjusting the valve clearance.

• This task should be performed inside, in a clean, dust free area.

1. Remove the two (2) screws on top of the engine cover with a Flat-head or T-25 Torx screwdriver (Fig. 23).

Top View Of The Engine

Idle Adjustment Screw

Fig. 22

MAINTENANCE AND REPAIR INSTRUCTIONS

WARNING: This unit needs to run during idle

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

5. Squeeze the filter to spread and remove excess oil (Fig. 21).

6. Replace the filter (Fig. 19). NOTE: If the unit is operated without the air filter, you will VOID

the warranty.

7. 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 air filter housing.

8. Swing the cover to the left until the tab on the air filter cover snaps into place in the slot on the left side of the air filter housing (Fig. 18).

Check Fuel

Old fuel is usually the reason for improper unit performance. Drain and refill the tank with fresh fuel prior to making any adjustments. Refer to Oil and Fuel Information.

Clean Air Filter

The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow. This is often mistaken for an out of adjustment carburetor. Check the condition of the air filter before adjusting the idle speed screw. Refer to Air Filter Maintenance.

Rocker Arm Cover

Fig. 25

Spark Plug Hole

Gasket

Screw

Fig. 24

MAINTENANCE AND REPAIR INSTRUCTIONS

7. Pull the starter rope slowly to bring the piston to the top of its travel, (known as top dead center). Check that:

• The piston is at the top of its travel while looking in the spark plug hole (Fig. 26)

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

If these statements are not true, repeat this step.

2. Remove the screw behind the engine cover (Fig. 24).

Adjusting Nuts

Feeler Gauge

Rocker Arms

Fig. 26

INTAKE

EXHAUST

Fig. 27

Feeler Gauge

Adjusting Nut

Rocker Arm

0.003–0.006 in.

(0.076–0.152 mm)

Exhaust Valve

Stem

8. Slide the feeler gauge between the rocker arm and the valve return spring. Measure the clearance between the valve stem and rocker arm. Measure both the intake and exhaust valves (Fig. 26 & 27).

The recommended clearance for both intake and exhaust is

0.003 – 0.006 in. (0.076 – 0.152 mm). Use a standard automotive

0.005 in. (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. See Figure 26 and 27.

9. If the clearance is not within specification:

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

nut driver (Fig. 27).

• To increase clearance, turn the adjusting nut counterclockwise.

• To decrease clearance, turn the adjusting nut clockwise.

b. Recheck both clearances, and adjust as necessary.

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

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

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

13. Replace the spark plug wire.

3. Disconnect the spark plug wire.

4. Clean dirt from around the spark plug. Remove the spark plug from the cylinder head by turning it counterclockwise with a 5/8” socket.

5. Remove the engine cover.

NOTE: To ease engine cover removal, pull the starter rope out

a little to give some slack.

6. Clean dirt from around the rocker arm cover. Remove the screw holding the rocker arm cover with a large flat blade screwdriver or Torx T-25 bit (Fig. 25). Remove the rocker arm cover and gasket.

Intake Valve

Stem

Dégagement d'admission:

.076–0.152 mm

(.003–.006 in.)

REPLACING THE SPARK PLUG

Use a replacement Champion RDZ19H spark plug. The correct air gap is 0.025 in. (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 the cap from the spark plug.

2. Clean dirt from around the spark plug. Remove the spark plug from the cylinder head by turning it counterclockwise with a 5/8” socket.

3. Replace cracked, fouled or dirty spark plug. Set the air gap at

0.025 in. (0.635 mm.) using a feeler gauge (Fig. 28).

Fig. 29

Muffler

Spark Arrestor Screen

Spark Arrestor Cover

Screw

Tab

Slot

SPARK ARRESTOR MAINTENANCE

1. Remove the muffler cover. See Rocker Arm Clearance.

2. With a flat blade screwdriver or Torx T-20 bit, remove the screw attaching the spark arrestor cover to the muffler (Fig. 29).

3. Pull the tab on the spark arrestor cover out of the muffler. Remove the spark arrestor cover.

4. Remove the spark arrestor screen from the spark arrestor cover.

5. Clean the spark arrestor screen with a wire brush or replace it.

6. Reinstall the spark arrestor screen, spark arrestor cover and screw.

MAINTENANCE AND REPAIR INSTRUCTIONS

WARNING: Do not sand blast, scrape or clean

electrodes. Grit in the engine could damage the cylinder.

0.025 in.

(0.635 mm)

Fig. 28

CLEANING THE UNIT

• Use a small brush to clean off the outside of the unit and to keep the air vents free of obstructions.

• Do not use strong detergents or petroleum based cleaners, such as kerosene. Some household cleaners contain aromatic oils such as pine and lemon that can damage the plastic housings or handles. Wipe off any moisture with a soft cloth.

STORAGE

• Never store the unit with fuel in the tank where fumes may reach an open flame or spark.

• Allow the engine to cool before storing.

• Store the unit in a locked up area to prevent unauthorized use or damage.

• Store the unit in a dry, well-ventilated area. Do not store next to corrosive material like fertilizer.

• Store the unit out of the reach of children.

LONG-TERM STORAGE

If the unit will be stored for an extended time:

1. Carefully drain all gasoline from the fuel tank by removing the fuel cap and tipping the motor housing over to allow the fuel to drain into an approved gas container. Do not use gas that has been stored for more than 60 days. Dispose of the old gasoline in accordance with Federal, State and Local regulations.

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

3. Allow the engine to cool. Remove the spark plug and put 5 drops of high quality motor 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.

4. Change the oil, referring to the Changing the Oil section. Dispose of the old oil in accordance with Federal, State and Local regulations.

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

6. To take up less storage area, loosen the handlebar knobs and fold the handlebar down. The unit is ready for storage.

TRANSPORTING

• Allow the engine to cool before transporting.

• Secure the unit while transporting.

• Drain the fuel tank before transporting.

• Tighten fuel cap before transporting.

WARNING: To avoid serious personal injury,

always turn the unit off and allow it to cool before you clean or perform any maintenance on it.

4. Install a correctly-gapped spark plug in the cylinder head. Turn the 5/8 in. 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.

TROUBLESHOOTING

If further assistance is required, contact your authorized service dealer.

CAUSE ACTION

Air filter is plugged Replace or clean the air filter Old or improperly mixed fuel Drain gas tank and add fresh fuel Improper carburetor adjustment Adjust according to the Carburetor Adjustments section or take

to an authorized service dealer for an adjustment

CAUSE ACTION

On/Off control in the STOP position

Turn On/Off control to ON Empty fuel tank Fill fuel tank with fuel Primer bulb wasn't pressed enough Press primer bulb fully and slowly 10 times

Old or improperly mixed fuel Drain gas tank and add fresh fuel Fouled spark plug Replace or clean the spark plug Plugged spark arrestor Clean or replace spark arrestor Engine is flooded Pull starter rope repeatedly with throttle control fully

engaged and with the choke lever in Position 3

CAUSE ACTION

Old or improperly mixed fuel Drain gas tank and add fresh fuel Improper carburetor adjustment Adjust according to the Carburetor Adjustments section or take

to an authorized service dealer for an adjustment Fouled spark plug Replace or clean the spark plug

Plugged spark arrestor Clean or replace spark arrestor Low power Rocker arm clearance adjustment (see page 18) Cultivator tines bound with dirt or grass Stop the unit, switch the On/Off Stop Control to STOP, clean

and remove any debris binding the tines

CAUSE ACTION

Old or improperly mixed fuel Drain gas tank and add fresh fuel Improper carburetor adjustment Adjust according to the Carburetor Adjustments section or take

to an authorized service dealer for an adjustment Dirty air filter Clean or replace the air filter

Plugged spark arrestor Clean or replace spark arrestor Cultivator tines bound with dirt or grass Stop the unit, switch the On/Off Stop Control to STOP, clean

and remove any debris binding the tines

CAUSE ACTION

Oil fill plug/dipstick loose or missing o-ring Tighten oil fill plug/dipstick, replace o-ring

CAUSE ACTION

Spark plug gap is too small/close Adjust gap to 0.025”

ENGINE WILL NOT START

ENGINE WILL NOT IDLE

ENGINE WILL NOT ACCELERATE

ENGINE LACKS POWER OR STALLS WHEN CUTTING

SIGNS OF OIL AROUND OIL FILL PLUG / DIPSTICK

UNIT OCCASIONALLY HESITATES AT HIGH SPEEDS

*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.

Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 4-Cycle

Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 cu. in. (26.2 cc)

Idle Speed RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,000-3,600 rpm

Operating RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,200-8,800 rpm

Clutch Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Centrifugal

Ignition Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic

On/Off Stop Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Positive On/Off Switch

Valve clearance (intake and exhaust) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.003–0.006 in. (0.076–0.0152 mm)

Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 inch (0.635 mm)

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAE 30 Oil

Crankcase Oil Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.04 oz (90 ml)

Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unleaded

Carburetor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diaphragm, All-Position

Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Auto Rewind

Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Baffled with Guard

Throttle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spring Return

Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 oz (444 ml)

Cultivating Path Width (Maximum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 inches (22.86 cm)

Cultivating Depth (Maximum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 inches (15.24 cm)

Approximate Weight (no fuel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 lb. (11.5 kg)

SPECIFICATIONS

CULTIVATOR*

ENGINE*

NOTES

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