Sears Craftsman 900 Series User manual

Important:
Read and follow
all Safety Rules
and Instructions
Before Operating
This Equipment
MODEL NO.
944.628650
OWNER’S
MANUAL
• Assembly
• Operation
• Maintenance
• Service and Adjustments
• Repair Parts
900 SERIES
24 INCH TINE WIDTH
Sears Canada, Inc., Toronto, Ontario M5B 2B8

2
• Do not run the engine indoors; exhaust fumes are
dangerous.
• Never operate the tiller without proper guards, plates,
or other safety protective devices in place.
• Keep children and pets away.
• Do not overload the machine capacity by attempting
to till too deep at too fast a rate.
• Never operate the machine at high speeds on slippery
surfaces. Look behind and use care when backing.
• Never allow bystanders near the unit.
• Use only attachments and accessories approved by
the manufacturer of the tiller.
• Never operate the tiller without good visibility or light.
• Be careful when tilling in hard ground. The tines may
catch in the ground and propel the tiller forward. If this
occurs, let go of the handlebars and do not restrain the
machine.
MAINTENANCE AND STORAGE
• Keep machine, attachments, and accessories in safe
working condition.
• Check shear pins, engine mounting bolts, and other
bolts at frequent intervals for proper tightness to be
sure the equipment is in safe working condition.
• Never store the machine with fuel in the fuel tank inside
a building where ignition sources are present, such
as hot water and space heaters, clothes dryers, and
the like. Allow the engine to cool before storing in any
enclosure.
• Always refer to the operator’s guide instructions for
important details if the tiller is to be stored for an ex-
tended period.
- IMPORTANT -
CAUTIONS, IMPORTANTS, AND NOTES ARE A MEANS OF
ATTRACTING ATTENTION TO IMPORTANT OR CRITICAL
INFORMATION IN THIS MANUAL.
IMPORTANT: USED TO ALERT YOU THAT THERE IS A
POSSIBILITY OF DAMAGING THIS EQUIPMENT.
NOTE: Gives essential information that will aid you to
better understand, incorporate, or execute a particular set
of instructions.
Look for this symbol to point out im-
portant safety precautions. It means
CAUTION!!! BECOME ALERT!!! YOUR
SAFETY IS INVOLVED.
CAUTION: Always disconnect spark
plug wire and place wire where it can-
not contact spark plug in order to pre-
vent accidental starting when setting
up, transporting, adjusting or making
repairs.
TRAINING
• Read the Owner’s Manual carefully. Be thoroughly
familiar with the controls and the proper use of the
equipment. Know how to stop the unit and disengage
the controls quickly.
• Never allow children to operate the equipment. Never
allow adults to operate the equipment without proper
instruction.
• Keep the area of operation clear of all persons, par-
ticularly small children, and pets.
PREPARATION
• Thoroughly inspect the area where the equipment is
to be used and remove all foreign objects.
• Disengage all clutches and shift into neutral before
starting the engine (motor).
• Do not operate the equipment without wearing ade-
quate outer garments. Wear footwear that will improve
footing on slippery surfaces.
• Handle fuel with care; it is highly flammable.
• Use an approved fuel container.
• Never add fuel to a running engine or hot engine.
• Fill fuel tank outdoors with extreme care. Never fill fuel
tank indoors.
• Replace gasoline cap securely and clean up spilled
fuel before restarting.
• Use extension cords and receptacles as specified by
the manufacturer for all units with electric drive motors
or electric starting motors.
• Never attempt to make any adjustments while the
engine (motor) is running (except where specifically
recommended by manufacturer).
OPERATION
• Do not put hands or feet near or under rotating parts.
• Exercise extreme caution when operating on or cross-
ing gravel drives, walks, or roads. Stay alert for hidden
hazards or traffic. Do not carry passengers.
• After striking a foreign object, stop the engine (motor),
remove the wire from the spark plug, thoroughly inspect
the tiller for any damage, and repair the damage before
restarting and operating the tiller.
• Exercise caution to avoid slipping or falling.
• If the unit should start to vibrate abnormally, stop the
engine (motor) and check immediately for the cause.
Vibration is generally a warning of trouble.
• Stop the engine (motor) when leaving the operating
position.
• Take all possible precautions when leaving the machine
unattended. Disengage the tines, shift into neutral, and
stop the engine.
• Before cleaning, repairing, or inspecting, shut off the
engine and make certain all moving parts have stopped.
Disconnect the spark plug wire, and keep the wire away
from the plug to prevent accidental starting. Disconnect
the cord on electric motors.
SAFETY RULES
SAFE OPERATION PRACTICES FOR WALK-BEHIND POWERED ROTARY TILLERS

3
PRODUCT SPECIFICATIONS CUSTOMER RESPONSIBILITIES
• Read and observe the safety rules.
• Follow a regular schedule in maintaining, caring for
and using your tiller.
• Follow the instructions under the “Maintenance” and
“Storage” sections of this Owner’s Manual.
CONGRATULATIONS on your purchase of a Sears Tiller. It
has been designed, engineered and manufactured to give
you the best possible dependability and performance.
Should you experience any problems you cannot easily
remedy, please contact your nearest authorized Sears
Service Centre/Department. They have competent, well-
trained technicians and the proper tools to service or repair
this unit.
Please read and retain this manual. The instructions will
enable you to assemble and maintain your tiller properly.
Always observe the “SAFETY RULES”.
GASOLINE CAPACITY: 3 Quarts (2.8L)
Unleaded Regular
OIL (API-SG-SL): SAE 30 (Above 32°F )
(Capacity: 19 oz./0.6L) SAE 5w-30 (Below 32°F)
SPARK PLUG : NGK-BPR6ES
(GAP: .030"/0.76mm) TORCH-F6RTC IMPORTANT: THIS UNIT IS EQUIPPED WITH AN INTERNAL
COMBUSTION ENGINE AND SHOULD NOT BE USED ON
OR NEAR ANY UNIMPROVED FOREST-COVERED, BRUSH-
COVERED OR GRASS COVERED LAND UNLESS THE
ENGINE’S EXHAUST SYSTEM IS EQUIPPED WITH A SPARK
ARRESTER MEETING APPLICABLE LOCAL OR STATE LAWS
(IF ANY). IF A SPARK ARRESTER IS USED, IT SHOULD BE
MAINTAINED IN EFFECTIVE WORKING ORDER BY THE
OPERATOR.
SEE YOUR SEARS AUTHORIZED SERVICE CENTRE/
DEPARTMENT FOR SPARK ARRESTER. REFER TO THE
REPAIR PARTS SECTION OF THIS MANUAL FOR PART
NUMBER.
SAFETY RULES ............................................................ 2
CUSTOMER RESPONSIBILITIES................................. 3
PRODUCT SPECIFICATIONS....................................... 3
WARRANTY................................................................... 3
ASSEMBLY ................................................................. 4-5
OPERATION ............................................................... 6-9
MAINTENANCE SCHEDULE ...................................... 10
TABLE OF CONTENTS
MAINTENANCE SCHEDULE ................................. 10-12
SERVICE & ADJUSTMENTS ................................. 13-14
STORAGE.................................................................... 15
TROUBLESHOOTING................................................. 16
REPAIR PARTS-TILLER......................................... 17-22
REPAIR PARTS-ENGINE ............................................ 23
SERVICE/PARTS ORDERING ................ BACK COVER
LIMITED ONE (1) YEAR WARRANTY ON CRAFTSMAN TILLER
For One(1) year from date of purchase Sears Canada, Inc. will repair or replace at Sears option free of charge parts
which are defective as a result of material or workmanship.
COMMERCIAL OR RENTAL USE:
Warranty on Tiller will be thirty (30) days from date of purchase if used for commercial or rental purposes.
This Warranty does NOT cover:
1. Pre-delivery set-up.
2. Expendable items which become worn during normal use, such as tines, spark plugs, air cleaners,
shear pins, and belts.
3. Repairs necessary because of operator abuse or negligence, including the failure to operate and
maintain the equipment according to the instructions contained in the Owner’s Manual.
4. In Home Service.
Warranty service is available by returning the Craftsman Tiller to the nearest Sears Service Centre/Department in
Canada. This warranty applies only while this product is in use in Canada.
This warranty is in addition to any statutory warranty and does not exclude or limit legal rights you may have but
shall run concurrently with applicable provincial legislation. Furthermore, some provinces do NOT allow limitation
on how long an implied warranty will last so the above limitations may not apply to you.
SEARS CANADA, INC., TORONTO, ONTARIO M5B 2B8

4
FIG. 1
FRONT
LEFT
overhead_views_7
OPERATOR’S
POSITION
RIGHT
TOOLS REQUIRED FOR ASSEMBLY
A socket wrench set will make assembly easier. Standard
wrench sizes are listed.
(1) Utility knife
(2) 1/2 Wrench
OPERATOR’S POSITION (See Fig. 1)
When right or left hand is mentioned in this manual, it
means when you are in the operating position (standing
behind tiller handles).
Your new tiller has been assembled at the factory with exception of those parts left unassembled for shipping purposes.
To ensure safe and proper operation of your tiller all parts and hardware you assemble must be tightened securely. Use
the correct tools as necessary to insure proper tightness.
ASSEMBLY
(2) Flange
Locknuts
5/16-18 UNC
(2) Lock
Washer
5/16
(2) Hex Nut
5/16-18
(2) Hex Bolt
5/16-18 x 1-1/4
(2) CarriageBolts
5/16-18 UNC x 2-1/2
CONTENTS OF HARDWARE PACK
(1) Manual
(1) Bottle
EngineOil

5
ASSEMBLY
depth_stake_4
Hex Bolts, Lock Washers, and hex Nuts
Support Bolt
Depth Stake Support
Engine Bracket Halves
Nut “A”
Depth
Stake
Stake Spring
Tine
Control
Cable
Handle
Mount
Handle
Column
Tine Control
Flange
Locknut
Carriage
Bolt
FIG. 1
INSTALL DEPTH STAKE ASSEMBLY
(See Fig. 2)
•Loosen nut “A”.
• Insert stake support between engine bracket halves
with stake spring down.
• Bolt stake support to engine brackets with bolts, lock
washers and nuts. Tighten securely. Tighten nut “A”.
• Depth stake must move freely. If it does not, loosen
support bolt.
UNPACK CARTON & INSTALL HANDLE
(See Fig. 1)
CAUTION: Be careful of exposed
staples when handling or disposing of
cartoning material.
IMPORTANT: WHEN UNPACKING AND ASSEMBLING
TILLER, BE CAREFUL NOT TO STRETCH OR KINK
CABLE(S).
• Cut cable ties securing handle column.
• Route cable(s) as shown and slide handle column onto
handle mount.
• Remove all packing from carton.
• Secure handle column using two (2) carriage bolts and
two (2) flange locknuts. Tighten securely.
• Cut away carton.
• Route tine control cable(s) through plastic cable clip
on handle mount.
NOTE: Cables must not touch the muffler.
• Cut cable ties securing tiller to skid. Remove tiller from
skid by pulling backwards.
• Remove screws securing depth stake to skid and
discard the screws.
HANDLE HEIGHT
• Handle height may be adjusted to better suit operator.
(See “HANDLE HEIGHT” in the Service and Adjustments
section of this manual).
TILLING WIDTH
• Tilling width may be adjusted to better handle your
tilling conditions (See “TINE ARRANGEMENT” in the
Service and Adjustments section of this manual).
TINE OPERATION
• Check tine operation before first use. (See “TINE
OPERATION CHECK” in the Service and Adjustments
section of this manual).
FIG. 2

6
MEETS ANSI SAFETY REQUIREMENTS
Our tillers conform to the safety standards of the American National Standards Institute.
CHOKE CONTROL - Used when starting a cold engine.
DEPTH STAKE - Controls forward speed and the depth
at which tiller will dig.
ENGINE ON/OFF SWITCH - The engine switch enables
and disables the ignition system.
FORWARD TINE CONTROL - Engages tines in forward
direction.
FUEL VALVE - The fuel valve opens and closes the pas-
sage between the fuel tank and the carburetor.
RECOIL STARTER HANDLE - Used to start the engine.
THROTTLE CONTROL - Used to control engine speed.
KNOW YOUR TILLER
READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR TILLER.
Compare the illustrations with your tiller to familiarize yourself with the location of various controls and adjustments. Save
this manual for future reference.
These symbols may appear on your Tiller or in literature supplied with the product. Learn and understand their
meaning.
OPERATION
On/Off Switch
Fuel Valve
Recoil Starter
Handle
Forward Tine Control
Depth
Stake
Throttle Control
Choke Control
Tines
Fuel Fill Port
FIG. 3

7
OPERATION
00155
The operation of any tiller can result in foreign objects thrown into the eyes, which can result
in severe eye damage. Always wear safety glasses or eye shields before starting your tiller
and while tilling. We recommend a wide vision safety mask for over spectacles or standard
safety glasses.
HOW TO USE YOUR TILLER
Know how to operate all controls before adding fuel and
oil or attempting to start engine.
STOPPING (See Fig. 4)
TINES
1. Release tine control to stop movement.
ENGINE
2. Move throttle control to “SLOW” position and allow the
engine to run slowly for cool down.
3. Turn the engine switch to the "OFF" Position.
4. Turn the fuel valve lever to the "OFF" Position.
NOTE: NEVER USE CHOKE TO STOP ENGINE.
IMPORTANT: TO STOP ENGINE IN AN EMERGENCY, TURN
THE ENGINE SWITCH TO THE OFF POSITION.
Tine Control
“Off” (UP) Position
Tine Control
“On” (DOWN) Position
TINE OPERATION
• Squeeze tine control to handle.
1
Throttle
Control
Engine
Switch
Fuel Valve
Throttle
Control
Fuel
Valve
Engine
Switch
FIG. 4
depth_stake_4
Hairpin Clip and Clevis Pin
Depth
Stake
Stake
Spring
Wheel
TILLING
The speed and depth of tilling is regulated by the position
of the depth stake and wheel height.
The depth stake should always be below the wheels for
digging. It serves as a brake to slow the tiller’s forward
motion to enable the tines to penetrate the ground. Also,
the more the depth stake is lowered into the ground the
deeper the tines will dig.
DEPTH STAKE (See Fig. 5)
Adjust depth stake by removing the hairpin clip and clevis
pin. Change depth stake to desired position. Replace the
clevis pin and hairpin clip.
• For normal tilling, set depth stake at the second or third
hole from the top.
WHEELS (See Fig. 5)
Adjust wheels by removing the hairpin clip and clevis
pin. Change wheel position. Replace the hairpin clip and
clevis pin.
• For normal tilling, set wheels at the second or third
hole from the top.
FIG. 5
TO TRANSPORT
CAUTION: Before lifting or trans-
porting, allow tiller engine and muffler
to cool. Disconnect spark plug wire.
Drain gasoline from fuel tank.
AROUND THE YARD
• Tip depth stake forward until it is held by the stake
spring.
• Push tiller handles down, raising tines off the
ground.
• Push or pull tiller to desired location.

8
OPERATION
AROUND TOWN
• Disconnect spark plug wire.
• Drain fuel tank.
• Transport in upright position to prevent oil leakage.
BEFORE STARTING ENGINE
IMPORTANT: BE VERY CAREFUL NOT TO ALLOW DIRT TO
ENTER THE ENGINE WHEN CHECKING OR ADDING OIL
OR FUEL. USE CLEAN OIL AND FUEL AND STORE IN AP-
PROVED, CLEAN, COVERED CONTAINERS. USE CLEAN
FILL FUNNELS.
FILL ENGINE WITH OIL (See Fig.6)
1. Remove hangtag from engine.
2. With engine level, remove engine oil filler plug.
3. Fill engine with oil to point of overflowing. For approxi-
mate capacity see “PRODUCT SPECIFICATIONS” on
page 4 of this manual. All oil must meet A.P.I. Service
Classification SG-SL.
4. Tilt tiller back on its wheels and then re-level.
5. With engine level, refill to point of overflowing if neces-
sary. Replace oil filler plug.
• For cold weather operation you should change oil for
easier starting (See “OIL VISCOSITY CHART” in the
Maintenance section of this manual).
• To change engine oil, see the Maintenance section of
this manual.
ADD GASOLINE
• Fill fuel tank to bottom of filler neck. Do not overfill.
Use fresh, clean, regular unleaded gasoline with a
minimum of 87 octane. (Use of leaded gasoline will
increase carbon and lead oxide deposits and reduce
valve life). Do not mix oil with gasoline. Purchase fuel
in quantities that can be used within 30 days to assure
fuel freshness.
CAUTION: Fill to within 1/2 inch of top
of fuel tank to prevent spills and to
allow for fuel expansion. If gasoline
is accidentally spilled, move machine
away from area of spill. Avoid creating
any source of ignition until gasoline
vapors have disappeared.
Wipe off any spilled oil or fuel. Do not
store, spill or use gasoline near an
open flame.
FIG. 6
engine_art_4
Oil Level
Oil Filler
Plug
Max Upper Level
Min Lower Level
IMPORTANT: WHEN OPERATING IN TEMPERATURES
BELOW32°F(0°C), USE FRESH, CLEAN WINTER GRADE
GASOLINE TO HELP INSURE GOOD COLD WEATHER
STARTING.
CAUTION: Alcohol blended fuels (called gasohol
or using ethanol or methanol) can attract mois-
ture which leads to separation and formation of
acids during storage. Acidic gas can damage
the fuel system of an engine while in storage. To
avoid engine problems, the fuel system should
be emptied before storage of 30 days or longer.
Drain the gas tank, start the engine and let it run
until the fuel lines and carburetor are empty. Use
fresh fuel next season. See Storage Instructions
for additional information. Never use engine or
carburetor cleaner products in the fuel tank or
permanent damage may occur.
TO START ENGINE (See Fig. 7)
CAUTION: KEEP TINE CONTROL IN “OFF”
POSITION WHEN STARTING ENGINE.
When starting engine for the first time or if engine has run
out of fuel, it will take extra pulls of the recoil starter to
move fuel from the tank to the engine.
1. Make sure spark plug wire is properly connected.
2. Place the fuel valve to the "ON" position.
3. To start a cold engine, move the choke lever to the
"ON" position.
4. Move the throttle lever away from the "SLOW" position,
about 1/3 of the way toward the "FAST" position.
5. Turn the engine switch to the "ON" position. Pull rope
out slowly until engine reaches start of compression
cycle (rope will pull slightly harder at this point).
6. Pull recoil starter handle quickly. Do not let starter
handle snap back against starter. Repeat if neces-
sary.
NOTE: IF ENGINE FIRES BUT DOES NOT START, MOVE
CHOKE CONTROL TO HALF CHOKE POSITION. PULL RECOIL
STARTER HANDLE UNTIL ENGINE STARTS.
7. If the choke lever has been moved to the "ON" position
to start the engine, gradually move it to the opposite
position as the engine warms up.
NOTE: A WARM ENGINE REQUIRES LESS CHOKING TO
START.
8. Move throttle control to desired running position.
9. Allow engine to warm up for a few minutes before
engaging tines.
NOTE: IFENGINEDOESNOTSTART, SEE TROUBLESHOOTING
POINTS.
FIG. 7
Throttle Control
Engine
Switch
Choke
Control
Fuel Valve
Recoil Starter
Spark Plug

9
OPERATION
FIG. 9
BREAKING IN YOUR TILLER
Break-in your belt(s), pulleys and tine control before you
actually begin tilling.
• Start engine, tip tines off ground by pressing handles
down and engage tine control to start tine rotation.
Allow tines to rotate for five minutes.
• Check tine operation and adjust if necessary. See “TINE
OPERATION CHECK” in the Service and Adjustments
section of this manual.
TILLING HINTS
CAUTION: Until you are accustomed
to handling your tiller, start actual field
use with throttle in slow position.
To help tiller move forward, lift up the handles slightly (thus
lifting depth stake out of ground). To slow down the tiller,
press down on handles.
If you are straining or tiller is shaking, the wheels and depth
stake are not set properly in the soil being tilled. The proper
setting of the wheels and depth stake is through trial and
error and depends upon the soil condition. (The harder or
wetter the ground, the slower the engine and tine speed
needed. Under these poor conditions, at fast speed the
tiller will run and jump over the ground).
A properly adjusted tiller will dig with little effort from the
operator.
• Tilling is digging into, turning over, and breaking up
packed soil before planting. Loose, unpacked soil
helps root growth. Best tilling depth is 4"-6". A tiller
will also clear the soil of unwanted vegetation. The
decomposition of this vegetable matter enriches the
soil. Depending on the climate (rainfall and wind), it
may be advisable to till the soil at the end of the grow-
ing season to further condition the soil.
• Soil conditions are important for proper tilling. Tines will
not readily penetrate dry, hard soil which may contribute
to excessive bounce and difficult handling of your tiller.
Hard soil should be moistened before tilling; however,
extremely wet soil will “ball-up” or clump during tilling.
Wait until the soil is less wet in order to achieve the
best results. When tilling in the fall, remove vines and
long grass to prevent them from wrapping around the
tine shaft and slowing your tilling operation.
321
5
4
67
CULTIVATING
Cultivating is destroying the weeds between rows to pre-
vent them from robbing nourishment and moisture from the
plants. At the same time, breaking up the upper layer of
soil crust will help retain moisture in the soil. Best digging
depth is 1"-3".
• You will probably not need to use the depth stake. Begin
by tipping the depth stake forward until it is held by the
stake spring.
• Cultivate up and down the rows at a speed which will
allow tines to uproot weeds and leave the ground in
rough condition, promoting no further growth of weeds
and grass (See Fig. 9).
• You will find tilling much easier if you leave a row
untilled between passes. Then go back between tilled
rows. (See Fig. 8) There are two reasons for doing
this. First, wide turns are much easier to negotiate than
about-faces. Second, the tiller won’t be pulling itself,
and you, toward the row next to it.
• Set depth stake and wheel height for shallow tilling
when working extremely hard soil or sod. Then work
across the first cuts at normal depth.
FIG. 8

10
MAINTENANCE
GENERAL RECOMMENDATIONS
The warranty on this tiller does not cover items that have
been subjected to operator abuse or negligence. To receive
full value from the warranty, the operator must maintain tiller
as instructed in this manual.
Some adjustments will need to be made periodically to
properly maintain your tiller.
All adjustments in the Service and Adjustments section
of this manual should be checked at least once each
season.
• Once a year you should replace the spark plug, clean
or replace air filter, and check tines and belts for wear.
A new spark plug and clean air filter assure proper
air-fuel mixture and help your engine run better and
last longer.
BEFORE EACH USE
• Check engine oil level.
• Check tine operation.
• Check for loose fasteners.
LUBRICATION
Keep unit well lubricated (See “LUBRICATION CHART”).
LUBRICATION CHART
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1SAE 30 OR 10W-30 MOTOR OIL
2REFER TO MAINTENANCE “ENGINE” SECTION
2Engine
1Idler Arm
1Tine Control

11
MAINTENANCE
Disconnect spark plug wire before performing any maintenance (except carburetor adjustment) to prevent
accidental starting of engine.
Prevent fires! Keep the engine free of grass, leaves, spilled oil, or fuel. Remove fuel from tank before tipping
unit for maintenance. Clean muffler area of all grass, dirt, and debris.
Do not touch hot muffler or cylinder fins as contact may cause burns.
ENGINE
LUBRICATION
Use only high quality detergent oil rated with API service
classification SF-SJ. Select the oil’s SAE viscosity grade
according to your expected temperature. (See Fig. 10)
FIG. 10
NOTE: Although multi-viscosity oils (5W-30, 10W-30, etc.)
improve starting in cold weather, they will result in increased
oil consumption when used above 32°F (0°C). Check your
engine oil level more frequently to avoid possible engine
damage from running low on oil.
Change the oil after every 25 hours of operation or at
least once a year if the tiller is not used for 25 hours in
one year.
Check the crankcase oil level before starting the engine
and after each five (5) hours of continuous use. Add SAE
30 motor oil or equivalent. Tighten oil filler plug securely
each time you check the oil level.
4%-0%2!452%ª2!.'%ª!.4)#)0!4%$ª"%&/2%ª.%84ª/),ª#(!.'%
ªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªª3!%ª6)3#/3)49ª'2!$%3
CAUTION:Disconnect spark plug wire
before performing any maintenance to
prevent accidental starting of engine.
Prevent fires! Keep the engine free of
grass, leaves, spilled oil, or fuel. Re-
move fuel from tank before tipping unit
for maintenance. Clean muffler area of
all grass, dirt, and debris. Do not touch
hot muffler or cylinder fins as contact
may cause burns.
TO CHANGE ENGINE OIL (See Figs. 10 and 11)
Determine temperature range expected before oil change.
All oil must meet API service classification SF-SJ.
• Be sure tiller is on level surface.
• Oil will drain more freely when warm.
• Catch oil in a suitable container.
• Remove drain plug.
• Tip tiller forward to drain oil.
• After oil has drained completely, replace oil drain plug
and tighten securely.
Oil
Drain
Plug
Oil Filler Plug
Oil Level
FIG. 11
• Remove oil filler plug. Be careful not to allow dirt to
enter the engine.
• Refill engine with oil. See “FILL ENGINE WITH OIL ”
in the Operation section of this manual.
AIR CLEANER (See Fig. 12)
Service air cleaner cartridge every twenty-five hours, more
often if engine is used in very dusty conditions.
• Loosen air cleaner screws, one on each side of
cover.
• Remove air cleaner cover.
• Carefully remove air cleaner cartridge. Be careful. Do
not allow dirt or debris to fall into carburetor.
• Clean by tapping gently on a flat surface.
• If very dirty or damaged, replace cartridge.
• Clean and replace cover. Tighten screws securely.
IMPORTANT: PETROLEUM SOLVENTS, SUCH AS KEROSENE,
ARE NOT TO BE USED TO CLEAN THE CARTRIDGE. THEY
MAY CAUSE DETERIORATION OF THE CARTRIDGE. DO
NOT OIL CARTRIDGE. DO NOT USE PRESSURIZED AIR TO
CLEAN OR DRY CARTRIDGE.
FIG. 12
Air Cleaner
Screws
Cover
Air Cleaner
Cartridge
Pre-Cleaner

12
MAINTENANCE
FIG. 13
MUFFLER
Do not operate tiller without muffler. Do not tamper with
exhaust system. Damaged mufflers or spark arresters
could create a fire hazard. Inspect periodically and replace
if necessary. If your engine is equipped with a spark arrester
screen assembly, remove every 50 hours for cleaning and
inspection. Replace if damaged.
COOLING SYSTEM (See Fig. 13)
Your engine is air cooled. For proper engine performance
and long life keep your engine clean.
• Clean air screen frequently using a stiff-bristled brush.
• Remove blower housing and clean as necessary.
• Keep cylinder fins free of dirt and chaff.
Cylinder Fins
Muffler
Air Screen Blower
Housing
SPARK PLUG
Replace spark plugs at the beginning of each tilling sea-
son or after every 25 hours of use, whichever comes first.
Spark plug type and gap setting are shown in “PRODUCT
SPECIFICATIONS” on page 4 of this manual.
TRANSMISSION
Your transmission is sealed and will not require lubrication
unless serviced.
CLEANING
Do not clean your tiller when the engine and transmission
are hot. We do not recommend using pressurized water
(garden hose, etc.) to clean your unit unless the gasket
area around the transmission and the engine muffler, air
filter and carburetor are covered to keep water out. Water
in engine will shorten the useful life of your tiller.
• Clean engine, wheels, finish, etc. of all foreign matter.
• Keep finished surfaces and wheels free of all gasoline,
oil, etc.
• Protect painted surfaces with automotive type wax.

13
SERVICE AND ADJUSTMENTS
CAUTION: Disconnect spark plug wire from spark plug and place wire where it cannot come into
contact with plug.
TILLER
TO ADJUST HANDLE HEIGHT (See Fig. 14)
Factory assembly has provided lowest handle height. Select
handle height best suited for your tilling conditions. Handle
height will be different when tiller digs into soil.
• If a higher handle height is desired, loosen the four
nuts securing handle panel to engine brackets.
• Slide handle panel to desired location.
• Tighten the four nuts securely.
HANDLE
PANEL
ENGINE
BRACKETS
NUTS (ALSO 2
ON LEFT SIDE
OF TILLER)
FIG. 14
MID-WIDTH TILLING (See Fig. 16)
• Assemble holes “A” in tine hubs to holes “C” in tine
shaft.
tine_5
A
C
AC
FIG. 16
NARROW TILLING/CULTIVATING (See Fig. 17)
• Remove outer tines.
FIG. 17
tine_6
INNER TINES ONLY
TINE ARRANGEMENT
Your outer tines can be assembled in several different ways
to suit your tilling or cultivating needs.
CAUTION: Tines are sharp. Wear
gloves or other protection when han-
dling tines.
NORMAL TILLING (See Fig. 15)
• Assemble holes “A” in tine hubs to holes “B” in tine
shaft.
tine_4
OUTER
TINE
HAIRPIN CLIP
A
B
A
B
FIG. 15
INNER TINE
CLEVIS
PIN
NOTE: When reassembling outer tines, be sure right tine
assembly (marked “R”) and left tine assembly (marked “L”)
are mounted to correct side of tine shaft.
TINE OPERATION CHECK (See Fig. 18)
WARNING: Disconnect spark plug wire
from spark plug to prevent starting while
checking tine operation.
For proper tine operation, forward tine control lever must
be against control body and all slack removed from inner
wire of control cable when control is in the “OFF” (up)
position.
If lever and cable are loose, loosen cable clip at lower end of
cable. Pull up on cable to remove slack, without extending
spring on end of cable, and retighten cable clip.
FINAL CHECK “OFF” POSITION
• With tine control “OFF” (up), push down on handle to
raise tines off the ground.
• Slowly pull recoil starter handle while observing tines.
Tines should not rotate.
• If tines rotate, inner wire of control cable is too tight
which is extending lower spring and engaging tines.
Loosen cable clip and push down on cable only enough
to relieve spring tension. Tighten cable clip.
• Recheck in “OFF” position and adjust if necessary.

14
SERVICE AND ADJUSTMENTS
FINAL CHECK “ON” POSITION
• With tine control “ON” (held down to handle) push down
on handle to raise tines off the ground.
• Slowly pull recoil starter handle while observing tines.
Tines should rotate forward.
• If tines do not rotate, inner wire of control cable is too
loose. Loosen cable clip and pull cable up to remove
slack and retighten clip.
• Recheck in “ON” position and adjust if necessary.
NOTE: If “ON” position check required adjustment, recheck
“OFF” position adjustment to insure tines do not rotate
when control is “OFF” (up).
Tine Control “OFF” Position
Tine Control “ON” Position
Body
Tine Control Cable
Cable Clip
FIG. 18
TO REMOVE BELT GUARD (See Fig. 19)
• Remove screws from side of belt guard.
• Pull belt guard out and away from unit.
• Replace belt guard by reversing above procedure. Be
sure slot in bottom of belt guard is under head of tine
shield bolt and all nuts are tightened securely.
Screw
Screw
Screw
Belt Guard
FIG. 19
TO REPLACE V-BELT (See Fig. 20)
Replace V-belt if it has stretched considerably or if it has
cracks or frayed edges.
Belt guard must be removed to service belt. See “TO RE-
MOVE BELT GUARD” in this section of manual.
BELT REMOVAL
• Remove V-belt from transmission pulley first and then
from engine pulley.
BELT REPLACEMENT
• Install new V-belt to engine pulley first then to trans-
mission pulley. Be sure belt is positioned on inside
groove of both pulleys, inside all belt guides and rests
on idler pulley.
CHECK TINE OPERATION
• See “TINE OPERATION CHECK” in this section of
manual.
• Replace Belt Guard
Belt Guide
Belt Guide
Engine
Pulley
Idler Pulley
V-Belt
Transmission
Pulley
FIG. 20
ENGINE
Maintenance, repair, or replacement of the emission con-
trol devices and systems, which are being done at the
customers expense, may be performed by any non-road
engine repair establishment or individual. Warranty repairs
must be performed by an authorized engine manufacturer's
service outlet.
IMPORTANT: NEVER TAMPER WITH THE ENGINE
GOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE
SPEED. OVERSPEEDING THE ENGINE ABOVE THE FACTORY
HIGH SPEED SETTING CAN BE DANGEROUS. IF YOU THINK
THE ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING,
CONTACT YOUR NEAREST AUTHORIZED SERVICE CENTER/
DEPARTMENT, WHICH HAS THE PROPER EQUIPMENT AND
EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS.

15
STORAGE
ENGINE OIL
Drain oil (with engine warm) and replace with clean oil. (See
“ENGINE” in the Maintenance section of this manual).
CYLINDER(S)
• Remove spark plug.
• Pour 1 ounce (29 ml) of oil through spark plug hole
into cylinder.
• Pull starter handle slowly several times to distribute
oil.
• Replace with new spark plug.
OTHER
• Do not store gasoline from one season to another.
• Replace your gasoline can if your can starts to rust. Rust
and/or dirt in your gasoline will cause problems.
• If possible, store your unit indoors and cover it to give
protection from dust and dirt.
• Cover your unit with a suitable protective cover that
does not retain moisture. Do not use plastic. Plastic
cannot breathe which allows condensation to form and
will cause your unit to rust.
IMPORTANT: NEVER COVER TILLER WHILE ENGINE AND
EXHAUST AREAS ARE STILL WARM.
Immediately prepare your tiller for storage at the end of the
season or if the unit will not be used for 30 days or more.
WARNING: Never store the tiller with
gasoline in the tank inside a building
where fumes may reach an open flame
or spark. Allow the engine to cool before
storing in any enclosure.
TILLER
• Clean entire tiller (See “CLEANING” in the Maintenance
section of this manual).
• Inspect and replace belts, if necessary (See belt re-
placement instructions in the Service and Adjustments
section of this manual).
• Lubricate as shown in the Maintenance section of this
manual.
• Be sure that all nuts, bolts and screws are securely
fastened. Inspect moving parts for damage, breakage
and wear. Replace if necessary.
• Touch up all rusted or chipped paint surfaces; sand
lightly before painting.
ENGINE
FUEL SYSTEM
IMPORTANT: IT IS IMPORTANT TO PREVENT GUM DEPOSITS
FROM FORMING IN ESSENTIAL FUEL SYSTEM PARTS SUCH
AS THE CARBURETOR, FUEL FILTER, FUEL HOSE, OR TANK
DURING STORAGE. ALSO, EXPERIENCE INDICATES THAT
ALCOHOL BLENDED FUELS (CALLED GASOHOL OR USING
ETHANOL OR METHANOL) CAN ATTRACT MOISTURE WHICH
LEADS TO SEPARATION AND FORMATION OF ACIDS DURING
STORAGE. ACIDIC GAS CAN DAMAGE THE FUEL SYSTEM
OF AN ENGINE WHILE IN STORAGE.
• Drain the fuel tank.
• Start the engine and let it run until the fuel lines and
carburetor are empty.
• Never use engine or carburetor cleaner products in
the fuel tank or permanent.
NOTE: Fuel stablizer is an acceptable alternative in
minimizing the formation of fuel gum deposits during
storage. Add stabilizer to gasoline in fuel tank or storage
container. Always follow the mix ratio found on stablizer
container. Run engine at least 10 minutes after adding
stablizer to allow the stabilizer to reach the carburetor.
Do not drain the gas tank and carburetor if using fuel
stabilizer.

16
Will not start 1 Out of fuel. 1 Fill fuel tank.
2 Fuel valve “OFF” 2 Turn fuel valve to the “ON” position.
3 Engine Switch “OFF” 3 Turn engine switch to the “ON” position.
4 Engine not “CHOKED” properly. 4 See “TO START ENGINE” in Operation section.
5 Engine flooded. 5 Wait several minutes before attempting to start.
6 Bad spark plug or improper gap. 6 Replace spark plug or adjust gap.
7 Dirty air filter. 7 Clean/replace air filter.
8 Water in fuel. 8 Empty fuel tank and carburetor, refill tank with fresh gasoline.
Hard to start 1 Throttle control not set properly. 1 See “To Start Engine” in Operations section.
2 Dirty air filter. 2 Clean/replace air filter.
3 Bad spark plug or improper gap. 3 Replace spark plug or adjust gap.
4 Stale or dirty fuel. 4 Empty fuel tank and refill tank with fresh, clean gasoline.
5 Loose spark plug wire. 5 Make sure spark plug wire is seated properly.
Loss of power 1 Engine is overloaded 1 Set depth stake and wheels for shallower tilling.
2 Dirty air cleaner 2 Clean/replace air filter.
3 Low oil level/dirty oil. 3 Check oil level/change oil.
4 Faulty spark plug. 4 Clean and regap or change spark plug.
5 Oil in fuel 5 Empty and clean fuel tank and refill, and clean carburetor.
6 Stale or dirty fuel. 6 Empty fuel tank and refill tank with fresh, clean gasoline.
7 Water in fuel. 7 Empty fuel tank and carburetor, refill tank with fresh gasoline.
8 Clogged fuel tank. 8 Remove fuel tank and clean.
9 Spark plug wire loose. 9 Connect and tighten spark plug wire.
10 Dirty engine air screen. 10 Clean engine air screen.
11 Dirty/clogged muffler. 11 Clean/replace muffler.
12 Poor Compression 12 Contact a Sears or other qualified service center.
Engine overheats 1 Low oil level/dirty oil. 1 Check oil level/change oil.
2 Dirty engine air screen. 2 Clean engine air screen.
3 Dirty engine. 3 Clean cylinder fins, airscreen, muffler area
4 Partially plugged muffler 4 Remove and clean muffler.
Excessive bounce/
difficult handling
1 Ground too dry and hard. 1 Moisten ground or wait for more favorable soil conditions
2 Wheels and depth stake incorrectly adjusted. 2 Adjust wheels and depth stake.
Soil balls up or clumps 1 Ground too wet. 1 Wait for more favorable conditions.
Engine runs but tiller
won’t move
1 Tine control is not engaged. 1 Engage tine control
2 V-belt not correctly adjusted. 2 Inspect/adjust V-belt.
3 V-belt is off pulley (s). 3 Inspect V-belt.
Engine runs but labors
when tilling
1 Tilling too deep. 1 Set depth stake for shallower tilling
2 Throttle control not properly adjusted. 2 Check throttle control setting.
TROUBLESHOOTING POINTS

17
REPAIR PARTS
TILLER - - MODEL NUMBER 944.628650
HANDLES

 











HANDLE?ASSY??OPLC
1 137118 Panel, Control
3 165787 Grip, Handle
12 98000129 Nut, Flange
13 STD533107 Bolt, Carriage 5/16-18 x 3/4
14 181476 Assembly, Panel and Tube
19 188532 Lever, Control, Tine
20 188555 Pin, Pivot
29 12000059 Retainer, Ring
35 72010520 Bolt 5/16-18 x 2-1/2
36 73970500 Locknut, Flange 5/16-18 unc
38 152094 Assembly, Handle Column
39 181580 Clip
NOTE: All component dimensions given in U.S. inches.
1 inch = 25.4 mm
KEY PART
NO. NO. DESCRIPTION

18
REPAIR PARTS
TILLER - - MODEL NUMBER 944.628650
BELT GUARD AND PULLEY ASSEMBLY
8
6
7
12
14
13
9
7
7
10
1
2
16
5
17
18
19
20
21
25
4
belt_guard_10
11
3
1 23230506 Screw Set 5/16-18 x 3/8 Patch
2 130812 Sheave, Engine
3 86777 Screw, Tap Hex Head
4 74770508 Bolt, Hex 5/16-24 unf x 1/2
5 17490440 Bolt, Thd Roller 1/4-20 x 2-1/2
6 422920 Shield, Inner Belt Guard
7 170488 Screw Hex Wsh Hd #8-18 x 1/2
8 139155 Spacer Split
9 165768X613 Guard, Belt
10 109227X Pad, Idler
11 9484R Clip, Cable
12 9180R V-Belt
13 12000028 Ring, Retainer
14 151223 Sheave, Transmisison
16 12000036 Ring, Klip
17 STD541237 Nut, Hex, Jam 3/8-16
18 161806 Pulley, Idler
19 175377 Arm, Idler
20 STD523712 Bolt, Hex Head 3/8-16 x 1-1/4
21 106968X Shaft, Idler Arm
25 73350500 Nut, Hex, Jam 5/16-18
KEY PART
NO. NO. DESCRIPTION
NOTE: All component dimensions given in U.S. inches.
1 inch = 25.4 mm

19
REPAIR PARTS
TILLER - - MODEL NUMBER 944.628650
WHEEL AND DEPTH STAKE ASSEMBLY
1 9194R Pin, Clevis
2 74760520 Bolt, Hex Head 5/16-18 x 1-1/4
3 STD523107 Bolt, Hex Head 5/16-18 x 3/4
4 73220500 Nut
5 STD551131 Washer, Lock 5/16
6 STD541437 Locknut, w/washer 3/8-16
7 4921H Clip, Hairpin
8 1952J Support, Depth Stake, R.H.
9 122233X Stake, Depth
10 326J Pin, Clevis
11 74780628 Bolt, Hex 3/8-16 x 1-3/4
13 1951J Support, Depth Stake, L.H.
15 5388J Spring, Stake
16 121117X Bolt, Shoulder
17 9188R Wheel
18 STD551037 Washer 13/32 x 13/16 x 11 Ga.
19 9190R Bracket, Wheel
20 STD541437 Locknut, Crown 3/8-16
21 74760516 Bolt, Hex Head 5/16-18 x 1
22 STD541431 Locknut, w/insert 5/16-18
24 73970500 Nut Lock 5/16-18
KEY PART
NO. NO. DESCRIPTION
6
7
8
13
9
10
11
22
15
3
24
54
7
4
5
17
16
18
18
21
17
16
2
2
13
24
19
19
20
20
wheel_d.stake_2
NOTE: All component dimensions given in U.S. inches.
1 inch = 25.4 mm

20
NOTE: All component dimensions given in U.S. inches.
1 inch = 25.4 mm
REPAIR PARTS
TILLER - - MODEL NUMBER 944.628650
TINE ASSEMBLY
1 156926 Tine, Outer, R.H.
2 3146R Retainer, Spring Zinc
3 156924 Tine, Inner, R.H.
4 156923 Tine, Inner, L.H.
5 156925 Tine, Outer, L.H.
6 4929H Pin, Clevis
KEY PART
NO. NO. DESCRIPTION
3
1
6
4
5
6
2
2
tine_ipb_3