TB144
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.
Copyright© 2007 MTD SOUTHWEST INC, All Rights Reserved.
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.
2
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 auto-
matically 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:
3
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
4
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
5
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.
6
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.
7
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
.
8
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 well-
ventilated outdoor area. Carbon monoxide exhaust
fumes can be lethal in a confined area.
Fig. 12
Starter
Rope
Throttle
Control
9
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
10
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 1-800-
520-5520 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.
11
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
Air Filter
Screen
Hooks
Slot
Choke Lever
Air Filter Cover
Air Filter Housing
Tab
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.
12
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
1
23
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.
13
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.)
14
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.
15
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
16
*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*
17
NOTES
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