Model No.
944.360441
CAUTION:
Read and follow all
Safety Rules and Instructions
before operating this equipment
Owner’s Manual
6 HORSEPOWER
21"Multi-Cut
ROTARY LAWN MOWER
• Safety
• Assembly
• Operation
• Maintenance
• Repair Parts
Sears Canada, Inc., Toronto, Ontario M5B 2B8
The D.O.M. decal includes engine life specifications for the emissions-related useful life period of
your engine. This period relates to the emission compliance life as certified by EPA/CARB. To
find the life period specification for your engine, please match one of the following letters with the
letter printed on your D.O.M. decal: (C) 125 hours, (B) 250 hours, (A) 500 hours.
177188 02.14.01 BY Printed in U.S.A.
2
Warranty ................................................. 2
Safety Rules ........................................ 2-4
Assembly ............................................. 4-5
Operation ............................................. 6-9
Maintenance Schedule ........................ 10
Maintenance .................................... 10-13
Product Specifications .......................... 11
Service and Adjustments ................. 13-14
Storage ............................................ 14-15
Troubleshooting .............................. 16-17
Repair Parts ..................................... 18-23
Parts Ordering ........................ Back Cover
SAFETY RULES
WARRANTY
TABLE OF CONTENTS
I. GENERAL OPERATION
• Read, understand, and follow all
instructions on the machine and in the
manual(s) before starting. Be thor-
oughly familiar with the controls and the
proper use of the machine before
starting.
• Do not put hands or feet near or under
rotating parts. Keep clear of the
discharge opening at all times.
• Only allow responsible individuals, who
are familiar with the instructions, to
operate the machine.
• Clear the area of objects such as rocks,
toys, wire, bones, sticks, etc., which
could be picked up and thrown by the
blade.
• Be sure the area is clear of other
people before mowing. Stop machine if
anyone enters the area.
• Do not operate the mower when
barefoot or wearing open sandals.
Always wear substantial foot wear.
• Do not pull mower backwards unless
absolutely necessary. Always look
down and behind before and while
moving backwards.
• Do not operate the mower without
proper guards, plates, grass catcher or
other safety protective devices in place.
• See manufacturer’s instructions for
proper operation and installation of
accessories. Only use accessories
approved by the manufacturer.
IMPORTANT: This cutting machine is capable of amputating hands and feet and
throwing objects. Failure to observe the following safety instructions could result in
serious injury or death.
LIMITED TWO YEAR WARRANTY ON CRAFTSMAN power mower
For Two years 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 Power Mower (Gas) will be ninety (90) days from date of purchase if used
for commercial or rental purposes.
This Warranty does NOT cover:
• Pre-delivery set-up.
• Expendable items which become worn during normal use, such as rotary mower
blades, blade adapters, belts, air cleaners and spark plug.
• Repairs necessary because of operator abuse or negligence, including bent
crankshafts and the failure to maintain the equipment according to the instructions
contained in the owner’s manual.
Warranty service is available by returning the Craftsman Power Mower 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
27
SERVICE NOTES
3
• Stop the blade(s) when crossing gravel
drives, walks, or roads.
• Stop the engine (motor) whenever you
leave the equipment, before cleaning
the mower or unclogging the chute.
• Shut the engine (motor) off and wait
until the blade comes to complete stop
before removing grass catcher.
• Mow only in daylight or good artificial
light.
• Do not operate the machine while
under the influence of alcohol or drugs.
• Never operate machine in wet grass.
Always be sure of your footing: keep a
firm hold on the handle and walk; never
run.
• Disengage the self-propelled mecha-
nism or drive clutch on mowers so
equipped before starting the engine
(motor).
• If the equipment should start to vibrate
abnormally, stop the engine (motor)
and check immediately for the cause.
Vibration is generally a warning of
trouble.
• Always wear safety goggles or safety
glasses with side shields when operat-
ing mower.
II. SLOPE OPERATION
Slopes are a major factor related to slip
and fall accidents which can result in
severe injury. All slopes require extra
caution. If you feel uneasy on a slope, do
not mow it.
• Mow across the face of slopes: never
up and down. Exercise extreme caution
when changing direction on slopes.
• Remove obstacles such as rocks, tree
limbs, etc.
• Watch for holes, ruts, or bumps. Tall
grass can hide obstacles.
DO NOT:
• Do not trim near drop-offs, ditches or
embankments. The operator could lose
footing or balance.
• Do not trim excessively steep slopes.
• Do not mow on wet grass. Reduced
footing could cause slipping.
III. CHILDREN
Tragic accidents can occur if the operator
is not alert to the presence of children.
Children are often attracted to the
machine and the mowing activity.
Never
assume that children will remain where
you last saw them.
• Keep children out of the trimming area
and under the watchful care of another
responsible adult.
• Be alert and turn machine off if children
enter the area.
• Before and while walking backwards,
look behind and
down
for small
children.
• Never allow children to operate the
machine.
• Use extra care when approaching
blind corners, shrubs, trees, or other
objects that may obscure vision.
IV. SERVICE
• Use extra care in handling gasoline
and other fuels. They are flammable
and vapors are explosive.
- Use only an approved container.
- Never remove gas cap or add fuel
with the engine running. Allow
engine to cool before refueling. Do
not smoke.
- Never refuel the machine indoors.
- Never store the machine or fuel
container inside where there is an
open flame, such as a water heater.
• Never run a machine inside a closed
area.
• Never make adjustments or repairs
with the engine (motor) running.
Disconnect the spark plug wire, and
keep the wire away from the plug to
prevent accidental starting.
• Keep nuts and bolts, especially blade
attachment bolts, tight and keep
equipment in good condition.
• Never tamper with safety devices.
Check their proper operation regularly.
• Keep machine free of grass, leaves, or
other debris build-up. Clean oil or fuel
spillage. Allow machine to cool before
storing.
• Stop and inspect the equipment if you
strike an object. Repair, if necessary,
before restarting.
• Never attempt to make wheel height
adjustments while the engine (motor) is
running.
• Grass catcher components are subject
to wear, damage, and deterioration,
which could expose moving parts or
allow objects to be thrown. Frequently
check components and replace with
manufacturer’s recommended parts,
when necessary.
26
SERVICE NOTES
4
ASSEMBLY
Read these instructions and this manual in its
entirety before you attempt to assemble or
operate your new lawn mower.
IMPORTANT: This lawn mower is shipped
WITHOUT OIL OR GASOLINE in the engine.
Your new lawn mower has been assembled
at the factory with the exception of those parts
left unassembled for shipping purposes. All
parts such as nuts, washers, bolts, etc.,
necessary to complete the assembly have
been placed in the parts bag. To ensure safe
and proper operation of your lawn mower, all
parts and hardware you assemble must be
tightened securely. Use the correct tools as
necessary to ensure proper tightness.
TO REMOVE LAWN MOWER FROM
CARTON
1. Remove loose parts included with
mower.
2. Cut down two end corners of carton
and lay end panel down flat.
3. Remove all packing materials except
padding between upper and lower
handle and padding holding operator
presence control bar to upper handle.
4. Roll lawn mower out of carton and
check carton thoroughly for additional
loose parts.
• Mower blades are sharp and can cut.
Wrap the blade(s) or wear gloves, and
use extra caution when servicing them.
• Do not change the engine governor
setting or overspeed the engine.
Look for this symbol to point out
important safety precautions. It means
CAUTION!!! BECOME ALERT!!! YOUR
SAFETY IS INVOLVED.
CAUTION: Always disconnect spark
plug wire and place wire where it cannot
contact spark plug in order to prevent
accidental starting when setting up,
transporting, adjusting or making repairs.
WARNING: Battery posts, terminals and
related accessories contain lead and
lead compounds, chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm.
Wash hands after handling.
WARNING: Engine exhaust, some of its
constituents, and certain vehicle compo-
nents contain or emit chemicals known to
the State of California to cause cancer
and birth defects or other reproductive
harm.
CAUTION: Muffler and other engine
parts become extremely hot during
operation and remain hot after engine
has stopped. To avoid severe burns on
contact, stay away from these areas.
HOW TO SET UP YOUR LAWN
MOWER
TO UNFOLD HANDLE
IMPORTANT: Unfold handle carefully so
as not to pinch or damage control cables.
1. Raise lower handle section to
operating position and squeeze the
bottom ends of lower handle towards
each other until the pin in handle can
be inserted into one of the three
height adjustment holes.
2. Remove protective padding, raise
upper handle section into place on
lower handle and tighten both handle
knobs.
3. Remove any packing material from
around control bar.
Your handles may be adjusted for your
mowing comfort. Refer to Service and
Adjustments section of this manual.
25
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
KEY PART
NO. NO. DESCRIPTION
332 690662 Nut (Flywheel)
333 802574 Armature-Magneto
334 691061 Screw (Armature Magneto)
337 802592 Spark Plug
356 692390 Wire-Stop
358 497316 Engine Gasket Set
363 19069 Flywheel Puller
365 692524 Screw (Carburetor)
383 89838 Wrench-Spark Plug
404 690272 Washer (Governor Crank)
425 690670 Screw (Air Cleaner Cover)
443 692523 Screw (Air Cleaner Primer Base)
445 491588 Filter-Air Cleaner Cartridge
455 691219 Cup-Flywheel
456 692299 Plate-Pawl Friction
459 281505 Pawl-Ratchet
505 231082 Nut (Governor Control Lever)
523 495264 Dipstick
524 692296 • Seal-Dipstick Tube
525 495265 Tube-Dipstick
529 691923 Grommet
562 92613 Bolt (Governor Control Lever)
584 692342 Cover-Breather Passage
585 691879 • Gasket-Breather Passage
592 690800 Nut (Rewind Starter)
597 691696 Screw (Pawl Friction Plate)
601 95162 Clamp-Hose
608 497680 Starter-Rewind
613 691340 Screw (Muffler)
615 690340 Retainer-Governor Shaft
616 691306 Crank-Governor
617 270344 ؇Seal-O Ring (Intake Manifold)
621 692310 Switch-Stop
635 66538 Boot-Sparkplug
668 493823 • Spacer (Includes 2)
670 692294 Spacer-Fuel Tank
684 690345 Screw (Breather Passage Cover)
689 691855 Spring-Friction
KEY PART
NO. NO. DESCRIPTION
708 691321 ؇Seal-Throttle Shaft
741 691830 Gear-Timing
842 691031 • Seal-O Ring (Dipstick Tube)
847 692017 Assembly-Dipstick/Tube
851 493880 Terminal-Sparkplug
869 691155 Seat-Valve (Intake)
870 690380 Seat-Valve (Exhaust)
871 262001 Bushing-Guide (Exhaust)
63709 Bushing-Guide (Intake)
921 497233 Cover-Blower Housing
922 692135 Spring-Brake
923 695891 Brake
957 397974 Cap-Fuel Tank
966 496116 Base-Air Cleaner Primer
968 692298 Cover-Air Cleaner
969 690700 Screw (Blower Housing Cover)
970 691669 Screw (Air Cleaner Primer Bracket)
972 495224 Tank-Fuel
975 493640 Bowl-Float
976 496115 Primer-Carburetor
977 498261 Set-Carburetor Gasket
1019 494256 Kit-Label
1036 695111 Label-Emissions
1058 274265 Owner’s Manual
1059 692311 Kit-Screw/Washer
1095 498528 Set-Valve Gasket
1210 498144 Assembly-Pulley/Spring (Pulley)
1211 498144 Assembly-Pulley/Spring (Spring)
• Included in Engine Gasket Set, Key No. 358
Ø Included in Carburetor Overhaul Kit, Key No. 121
‡ Included in Carburetor Gasket Set, Key No. 977
+ Included in Valve Overhaul Kit, Key. No 1095
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
5
TO INSTALL ATTACHMENTS
Your lawn mower was shipped ready to be
used as a mulcher. To convert to bagging or
discharging, see "TO CONVERT MOWER"
in the Operation section of this manual.
Catcher
frame
handle
Vinyl bindings
Frame
opening
TO ASSEMBLE GRASS CATCHER
1. Put grass catcher frame into grass bag
with rigid part of bag on the bottom.
Make sure the frame handle is outside
of the bag top.
2. Slip vinyl bindings over frame.
NOTE: If vinyl bindings are too stiff, hold them
in warm water for a few minutes. If bag gets
wet, let it dry before using.
3-Position
handle
adjustment
bracket
Handle pin
Lift up
Operator presence
control bar
Upper handle
Mowing
position
Lift up
Lower handle
Squeeze
24
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
KEY PART
NO. NO. DESCRIPTION
1 493260 Cylinder Assembly
2 399269 Kit-Bushing/Seal
3 299819 • Seal-Oil (Magneto Side)
4 493279 Sump-Engine
5 691160 Head-Cylinder
7 692249 •+Gasket-Cylinder Head
8 695250 Breather Assembly
9 272481 •+Gasket-Breather
10 691125 Screw (Breather Assembly)
11 691781 Tube-Breather
12 692232 • Gasket-Crankcase
13 690912 Screw (Cylinder Head)
15 691680 Plug-Oil Drain
16 691451 Crankshaft
20 399781 • Seal-Oil (PTO Side)
22 691092 Screw (Engine Sump)
23 692315 Flywheel
24 222698 Key-Flywheel
25 499429 Piston Assembly (Standard)
499430 Piston Assembly (.010” O.S.)
499431 Piston Assembly (.020" O.S.)
499432 Piston Assembly (.030" O.S.)
26 499425 Ring Set-Piston (Standard)
499426 Ring Set-Piston (.010” O.S.)
499427 Ring Set-Piston (.020”O.S.)
499428 Ring Set-Piston (.030” O.S.)
27 691866 Lock-Piston Pin
28 499423 Pin-Piston
29 499424 Rod-Connecting
32 691664 Screw (Connecting Rod)
32A 695759 Screw (Connecting Rod)
33 262651 Valve-Exhaust
34 262652 Valve-Intake
35 691270 Spring-Valve (Intake)
36 691270 Spring-Valve (Exhaust)
40 692194 Retainer-Valve
43 691997 Slinger-Governor/Oil
45 690548 Tappet-Valve
46 691449 Camshaft
KEY PART
NO. NO. DESCRIPTION
48 498826 Short Block (Replacement Engine
12J802-2915-B1)
50 497465 Manifold-Intake
51 272199 • Gasket-Intake
54 691650 Screw (Intake Manifold)
55 691421 Housing-Rewind Starter
58 692259 Rope-Starter (Cut to Length)
60 281434 Grip-Starter Rope
65 690759 Screw (Rewind Starter)
81 691740 Lock-Muffler Screw
95 691636 Screw (Throttle Valve)
97 493267 Shaft-Throttle
104 691242 Ø Pin-Float Hinge
117 494870 Jet-Main (Standard)
497315 Jet-Main (High Altitude)
121 498260 Kit-Carburetor Overhaul
125 498170 Carburetor
127 694468 Ø Plug-Welch
130 691203 Valve-Throttle
133 398187 Float-Carburetor
134 398188 Ø Valve-Needle/Seat
137 693981 ؇Gasket-Float Bowl
146 690979 Key-Timing
159 691753 Bracket-Air Cleaner Primer
163 272653 •Ø‡Gasket-Air Cleaner
187 691050 Line-Fuel (Cut to Required Length)
188 690877 Screw (Control Bracket)
190 690940 Screw (Fuel Tank)
202 691829 Link-Mechanical Governor
209 690319 Spring-Governor
222 692467 Bracket-Control
227 690783 Control Lever-Governor
276 271716 ؇Sealing Washer
287 690940 Screw (Dipstick Tube)
300 692038 Muffler
304 695892 Housing-Blower
305 691108 Screw (Blower Housing)
306 690450 Shield-Cylinder
307 690345 Screw (Cylinder Shield)
6
OPERATION
KNOW YOUR LAWN MOWER
READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR LAWN
MOWER. Compare the illustrations with your lawn mower to familiarize yourself with the
location of various controls and adjustments. Save this manual for future reference.
CAUTION
OR WARNING
FAST SLOWENGINE
ON
ENGINE
OFF
OILFUELCHOKE DANGER, KEEP HANDS
AND FEET AWAY
Starter handle
Gasoline filler cap
Housing
Primer
Wheel adjuster
(on each wheel)
Handle knob
Grass catcher
Engine oil cap w/dipstick
Operator presence control bar
Engine zone control cable
MEETS CPSC SAFETY REQUIREMENTS
Sears rotary walk-behind power lawn mowers conform to the safety standards of the American
National Standards Institute and the U.S. Consumer Product Safety Commission. The blade
turns when the engine is running.
Operator presence control bar - must be
held down to the handle to start the engine.
Release to stop the engine.
Mulcher door – allows conversion to
discharge or bagging operation.
These symbols may appear on your lawn mower or in literature supplied with the product. Learn and
understand their meaning.
IMPORTANT: This lawn mower is shipped
WITHOUT OIL OR GASOLINE in the engine.
Mulcher door
Starter handle - used for starting the engine.
Primer - pumps additional fuel from the
carburetor to the cylinder for use when
starting a cold engine.
Muffler
23
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
334
851
333
202
209
356
562
505
227
616
404
615
922
621
923
358 ENGINE GASKET SET
12
3
20
51
585
7
9
163
524
668842
48
745
7
Open mulcher door
Discharge
deflector
TO CONVERT MOWER
Your lawn mower was shipped ready to
be used as a mulcher. To convert to
bagging or discharging:
REAR BAGGING
• Lift rear door of the lawn mower and
place the grass catcher frame hooks
onto the door pivot pins.
• To convert to mulching or discharging
operation, remove grass catcher and
close rear door.
Pivot pins
SIDE DISCHARGING
• Rear door must be closed.
• Open mulcher door and install dis-
charge deflector under guard as
shown.
• Mower is now ready for discharging
operation.
• To convert to mulching or bagging
operation, discharge deflector must be
removed and mulcher door must be
closed.
The operation of any lawn
mower can result in foreign
objects thrown into the
eyes, which can result in
severe eye damage.
Always wear safety glasses or eye
shields while operating your lawn mower
or performing any adjustments or repairs.
We recommend a wide vision safety
mask over spectacles or standard safety
glasses.
HOW TO USE YOUR LAWN MOWER
ENGINE SPEED
The engine speed was set at the factory
for optimum performance. Speed is not
adjustable.
ENGINE ZONE CONTROL
CAUTION: Federal regulations require
an engine control to be installed on this
lawn mower in order to minimize the risk
of blade contact injury. Do not under any
circumstances attempt to defeat the
function of the operator control. The blade
turns when the engine is running.
• Your lawn mower is equipped with an
operator presence control bar which
requires the operator to be positioned
behind the lawn mower handle to start and
operate the lawn mower.
TO ADJUST CUTTING HEIGHT
Raise wheels for low cut and lower
wheels for high cut. Adjust cutting height
to suit your requirements. Medium
position is best for most lawns.
• To change cutting height, squeeze
adjuster lever toward wheel. Move wheel
up or down to suit your requirements. Be
sure all wheels are in the same setting.
NOTE: Adjuster is properly positioned
when plate tab inserts into hole in lever.
Also, 9-position adjusters (if so equipped)
allow lever to be positioned between the
plate tabs.
Lower Wheels for High Cut
Raise Wheels for Low Cut
Plate Tab
Lever
22
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
332
304
305
363
455
23
1036 EMISSIONS LABEL
55
456
58
60
459
689
597
608
65
592
921
969
190
670
957
972
1059
601
187
1211
1210
8
Gasoline filler cap
(Discard debris
plug inside)
Engine oil cap
SIMPLE STEPS TO REMEMBER WHEN
CONVERTING YOUR LAWN MOWER:
FOR MULCHING -
• Rear door closed.
• Mulcher door closed.
FOR REAR BAGGING -
• Grass catcher installed.
• Mulcher door closed.
FOR SIDE DISCHARGING -
• Rear door closed.
• Side discharge deflector installed.
CAUTION: Do not run your lawn
mower without rear door closed or
approved grass catcher in place. Never
attempt to operate the lawn mower with
the rear door removed or propped open.
BEFORE STARTING ENGINE
ADD OIL
Your lawnmower is shipped without oil in
the engine. Engine holds 20 oz. of oil.
For type and grade of oil to use, see
“ENGINE” in Maintenance section of this
manual.
1. Be sure lawnmower is level and area
around oil fill is clean.
2. Remove engine oil cap and fill to the
full line on the dipstick. Pour oil slowly.
Do not over fill.
NOTE: Allow oil to settle down into engine
for accurate reading. To read proper level,
tighten engine oil cap, then remove it to
read the dipstick.
3. Reinstall engine oil cap and tighten.
• Check oil level before each use. Add
oil if needed. Fill to full line on dipstick.
• Change the oil after every 25 hours of
operation or each season. You may
need to change the oil more often
under dusty, dirty conditions.
ADD GASOLINE
NOTE: Before filling fuel tank, remove
and discard the debris plug that is inside
the tank.
• Fill fuel tank. Use fresh, clean, regular
unleaded gasoline with a minimum of
87 octane. Do not mix oil with gaso-
line. Purchase fuel in quantities that
can be used within 30 days to assure
fuel freshness.
WARNING: 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. 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.
CAUTION: Fill to bottom of gas tank
filler neck. Do not overfill. Wipe off any
spilled oil or fuel. Do not store, spill or
use gasoline near an open flame.
TO START ENGINE
NOTE: Due to protective coatings on the
engine, a small amount of smoke may be
present during the initial use of the
product and should be considered
normal.
1. To start a cold engine, push primer
three (3) times before trying to start.
Use a firm push. This step is not
usually necessary when starting an
engine which has already run for a
few minutes.
2. Hold operator presence control bar
down to the handle and pull starter
handle quickly. Do not allow starter
rope to snap back.
21
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
104
137
276
95
127
708
617
276
130
365
125
97
134
975
133
117
163
968
445
425
443
163
529
159
970
966
976
188
222
104
137
276
127
708
121 CARBURETOR OVERHAUL KIT
617
137
276
708
617
977 CARBURETOR
GASKET SET
163
163
134
81
613
300
668
9
MULCHING MOWING TIPS
IMPORTANT: For best performance, keep
mower housing free of built-up grass and
trash. See “CLEANING” in the Maintenance
section of this manual.
• The special mulching blade will recut the
grass clippings many times and reduce
them in size so that as they fall onto the
lawn they will disperse into the grass and
not be noticed. Also, the mulched grass
will biodegrade quickly to provide nutrients
for the lawn. Always mulch with your
highest engine (blade) speed as this will
provide the best recutting action of the
blades.
• Avoid cutting your lawn when it is wet. Wet
grass tends to form clumps and interferes
with the mulching action. The best time to
mow your lawn is the early afternoon. At
this time the grass has dried and the newly
cut area will not be exposed to the direct
sun.
• For best results, adjust the lawn mower
cutting height so that the lawn mower cuts
off only the top one-third of the grass
blades. If the lawn is overgrown it will be
necessary to raise the height of cut to
reduce pushing effort and to keep from
overloading the engine and leaving
clumps of mulched grass. For extremely
heavy mulching, reduce your width of cut
by overlapping previously cut path and
mow slowly.
• Certain types of grass and grass condi-
tions may require that an area be mulched
a second time to completely hide the
clippings. When doing a second cut, mow
across or perpendicular to the first cut path.
• Change your cutting pattern from week to
week. Mow north to south one week then
change to east to west the next week. This
will help prevent matting and graining of
the lawn.
Max 1/3
TO STOP ENGINE
• To stop engine, release operator
presence control bar.
NOTE: In cooler weather it may be
necessary to repeat priming steps. In
warmer weather over priming may cause
flooding and engine will not start. If you do
flood engine, wait a few minutes before
attempting to start and do not repeat
priming steps.
MOWING TIPS
• Under certain conditions, such as very
tall grass, it may be necessary to raise
the height of cut to reduce pushing
effort and to keep from overloading the
engine and leaving clumps of grass
clippings. It may also be necessary to
reduce ground speed and/or run the
lawn mower over the area a second
time.
• For extremely heavy cutting, reduce the
width of cut by overlapping previously
cut path and mow slowly.
• For better grass bagging and most
cutting conditions, the engine speed
should be set in the fast position.
• Pores in cloth grass catchers can
become filled with dirt and dust with use
and catchers will collect less grass. To
prevent this, regularly hose catcher off
with water and let dry before using.
• Keep top of engine around starter clear
and clean of grass clippings and chaff.
This will help engine air flow and
extend engine life.
20
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
307
13
337
635
383
REQUIRES SPECIAL TOOLS
TO INSTALL. SEE REPAIR
INSTRUCTION MANUAL.
3
306
11
9
10
54
50
51
7
5
584
585
684
287
525
524
842
1019 LABEL KIT
1058 OWNER'S MANUAL
1
2
8
847
523
869
870
871
27
27
32
26
28
25
29
40
40
35
36
33
45
34
45
24
741
16
146
20
12
22
46
43
15
4
1095 VALVE
GASKET SET
7
9
32A
10
Spray lubricant
See "ENGINE" in Maintenance section.
MAINTENANCE
LUBRICATION CHART
GENERAL RECOMMENDATIONS
The warranty on this lawn mower does
not cover items that have been subjected
to operator abuse or negligence. To
receive full value from the warranty,
operator must maintain mower as
instructed in this manual.
Some adjustments will need to be made
periodically to properly maintain your
unit.
All adjustments in the Service and
Adjustments section of this manual
should be checked at least once each
season.
• Once a year, replace the spark plug,
replace air filter element and check
blade for wear. A new spark plug and
clean/new air filter element assure
proper air-fuel mixture and help your
engine run better and last longer.
• Follow the maintenance schedule in
this manual.
BEFORE EACH USE
1. Check engine oil level.
2. Check for loose fasteners.
LUBRICATION
Keep unit well lubricated (See "LUBRI-
CATION CHART").
Wheel adjusters (on each wheel)
Handle bracket mounting pins
Rear door
hinge
Engine oil
Change Engine Oil
Lubrication Chart
Clean Air Filter
Replace Air Filter Paper Cartridge
Clean or Replace Spark Plug
FILL IN DATES
AS YOU COMPLETE
REGULAR SERVICE
MAINTENANCE SCHEDULE
BEF
OR
E
EAC
H
US
E
AFTER
E
ACH
U
S
E
E
V
E
R
Y
25
HOU
RS
OR
EVER
Y
S
E
AS
ON
SERVICE DATES
Check for Loose Fasteners
BE
F
ORE STO
R
AGE
Check Engine Oil Level
Check/Sharpen/Replace Blade
Inspect Muffler
1 - Change more often when operating under a heavy load or in high ambient temperatures.
2 - Service more often when operating in dirty or dusty conditions.
3 - Replace blades more often when mowing in sandy soil.
4 - Charge 48 hours at end of season.
1,2
3
2
M
O
W
E
R
E
N
G
I
N
E
2
Clean Lawn Mower
Clean/Inspect Grass Catcher
(If Equipped)
E
V
E
RY
10
HO
U
RS
Clean Under Drive Cover
(Power-Propelled Mowers)
Clean Battery/Recharge
(Electric Start Mowers)
4
Check drive belt/pulleys
(Power-Propelled Mowers)
2
Mulcher
door hinge
pin
19
KEY PART
NO. NO. DESCRIPTION
35 166785 Locknut 5/16-18
36 160828 Shoulder Bolt 5/16-18
37 151162 Wheel Assembly
38 164362 Shoulder Bolt
39 83923 Flanged Locknut
40 77400 Hubcap
41 88652 Hinge Screw
42 165766 Spring (LH)
43 165767 Spring (RH)
44 165912 Door Bolt
45 150406 Hex Head Thread Rolling Screw 3/8-16 x 1
46 107339X Danger Decal
47 63124 Nut
48 167131X004 Axle Arm Assembly - RR
49 151161 Wheel
50 57143 Wave Washer
51 73990500 Nut
52 167712 Housing Assembly (Incl. Ref. #17, 18 & 46)
53 851084 Hex Head Screw 3/8-24 x 1-3/8 Grade 8
54 850263 Helical Lockwasher
55 851074 Hardened Washer
56 165833 21'’ Blade
57 851514 Blade Adapter
58 161551 Adjustment Bolt
67 167710 Grass Bag
68 165755 Catcher Frame
70 - - - Engine, Briggs & Stratton, Model Number
12H802-2639-B1 (See Breakdown)
- - 162300 Warning Decal (Not Shown)
- - 177188 Owner's Manual, English
- - 177189 Owner’s Manual, French
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
1 131696 Control Bar
2 166860X479 Upper Handle
3 161105X479 Lower Handle
4 132001 Rope Guide
5 63601 Locknut 1/4-20
6 131959 Handle Bolt
7 66426 Wire Tie
8 74780512 Hex Bolt 5/16-18 x 3/4
9 154132 Hinge Bracket
10 165754 Mulcher Door
11 176556 Engine Zone Control Cable
12 750097 Hex Washer Head Screw #10-24 x 1/2
13 86899X004 Up-Stop Bracket
14 136376 Handle Knob
15 51793 Hairpin Cotter
16 147286 Hinge Rod
17 165946X479 Support Bracket
18 17600406 Screw
19 167132X004 Axle Arm Assembly - LF
20 167133X004 Axle Arm Assembly - RF
21 165858 Rear Skirt
22 168360X004 Selector Spring
23 166875 Rear Door Assembly Kit (Incl. Springs)
24 751153 Locknut 5/16-18
25 166236X479 Handle Bracket Assembly (Left)
26 166243x479 Handle Bracket Assembly (Right)
27 851856 Screw 1/4-20 x 3/8
28 152124 Hinge Spring
29 160835X007 Wheel Adjusting Bracket - Front
30 19112222 Spacer
31 165760 Clip on Discharge Guard
33 87877 Selector Knob
34 167130X004 Axle Arm Assembly - LR
KEY PART
NO. NO. DESCRIPTION
ROTARY LAWN MOWER - - MODEL NUMBER 944.360441
IMPORTANT: Do not oil or grease plastic
wheel bearings. viscous lubricants will
attract dust and dirt that will shorten the
life of the self-lubricating bearings. If you
feel they must be lubricated, use only a
dry, powdered graphite type lubricant
sparingly.
11
PRODUCT SPECIFICATIONS
MODEL NUMBER: 944.360441
SERIALNUMBER:
DATE OF PURCHASE :
GASOLINE CAPACITY/ TYPE: 1.6 QUARTS
UNLEADED REGULAR
OIL TYPE (API-SF-SJ): SAE 30 (ABOVE 32°F)
SAE 5W-30 (BELOW 32°F)
OIL CAPACITY: 20 OZS.
SPARK PLUG (GAP: .030") CHAMPION RJ19LM
BLADE BOLT TORQUE: 35-40 FT. LBS.
• The model and serial numbers will be found on a decal attached to the rear of the
lawn mower housing. Record both serial number and date of purchase in the space
provided above.
LAWN MOWER
Always observe safety rules when perform-
ing any maintenance.
TIRES
• Keep tires free of gasoline, oil, or insect
control chemicals which can harm rubber.
• Avoid stumps, stones, deep ruts, sharp
objects and other hazards that may cause
tire damage.
BLADE CARE
For best results, mower blade must be
kept sharp. Replace bent or damaged
blades.
TO REMOVE BLADE
1. Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
2. Turn lawn mower on its side. Make
sure air filter and carburetor are up.
3. Use a wood block between blade and
mower housing to prevent blade from
turning when removing blade bolt.
NOTE: Protect your hands with gloves
and/or wrap blade with heavy cloth.
4. Remove blade bolt by turning counter-
clockwise.
5. Remove blade and attaching hard-
ware (bolt, lock washer and hardened
washer).
NOTE: Remove the blade adapter and
check the key inside hub of blade
adapter. The key must be in good
condition to work properly. Replace
adapter if damaged.
TO REPLACE BLADE
1. Position the blade adapter on the
engine crankshaft. Be sure key in
adapter and crankshaft keyway are
aligned.
2. Position blade on the blade adapter
aligning the two (2) holes in the blade
with the raised lugs on the adapter.
3. Be sure the trailing edge of blade
(opposite sharp edge) is up toward
the engine.
4. Install the blade bolt with the lock
washer and hardened washer into
blade adapter and crankshaft.
5. Use block of wood between blade and
lawn mower housing and tighten the
blade bolt, turning clockwise.
• The recommended tightening torque is
35-40 ft. lbs.
IMPORTANT: Blade bolt is grade 8 heat
treated.
Blade adapter
Blade
bolt
Crankshaft
keyway
Hardened
washer
Lockwasher
Blade adapter
Key
Blade
Trailing edge
Crank
shaft
18
REPAIR PARTS
ROTARY LAWN MOWER - - MODEL NUMBER 944.360441
12
TO SHARPEN BLADE
NOTE: We do not recommend sharpen-
ing blade - but if you do, be sure the blade
is balanced.
Care should be taken to keep the blade
balanced. An unbalanced blade will
cause eventual damage to lawn mower or
engine.
• The blade can be sharpened with a file
or on a grinding wheel. Do not attempt
to sharpen while on the mower.
• To check blade balance, drive a nail
into a beam or wall. Leave about one
inch of the straight nail exposed. Place
center hole of blade over the head of
the nail. If blade is balanced, it should
remain in a horizontal position. If either
end of the blade moves downward,
sharpen the heavy end until the blade
is balanced.
GRASS CATCHER
• The grass catcher may be hosed with
water, but must be dry when used.
• Check your grass catcher often for damage
or deterioration. Through normal use it will
wear. If catcher needs replacing, replace
only with a manufacturer approved
replacement catcher. Give the lawn mower
model number when ordering.
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 operating
temperature.
NOTE: Although multi-viscosity oils
(5W30, 10W30 etc.) improve starting in
cold weather, these multi-viscosity oils will
result in increased oil consumption when
used above 32°F. 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
lawn mower 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. Tighten oil plug
securely each time you check the oil level.
Container
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
SAE VISCOSITY GRADES
-20° 0° 30° 40°
80°
100°
-30°
-20° 0°
20° 30° 40°
°
F
°
C
32°
-10°
10°
60°
5W-30
SAE 30
TO CHANGE ENGINE OIL
NOTE: Before tipping lawn mower to
drain oil, drain fuel tank by running
engine until fuel tank is empty.
1. Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
2. Remove engine oil cap; lay aside on a
clean surface.
3. Tip lawn mower on its side as shown
and drain oil into a suitable container.
Rock lawn mower back and forth to
remove any oil trapped inside of
engine.
4. Wipe off any spilled oil from lawn
mower or side of engine.
5. Fill engine with oil. See “ADD OIL” in
the Operation section of this manual.
6. Reconnect spark plug wire to spark
plug.
AIR FILTER
Your engine will not run properly and may
be damaged by using a dirty air filter.
Replace the air filter every 100 hours of
operation or every season, more often if
you mow in very dusty, dirty conditions.
TO CLEAN AIR FILTER
1. Loosen screw and tilt cover to remove.
2. Carefully remove cartridge.
3. Clean by gently tapping on a flat
surface. If very dirty, replace cartridge.
CAUTION: Petroleum solvents, such as
kerosene, are not to be used to clean
cartridge. They may cause deterioration
of the cartridge. Do not oil cartridge. Do
not use pressurized air to clean or dry
cartridge.
4. Install cartridge, then replace cover
making sure the tabs are aligned with
the slots in the back plate. Fasten
screw securely.
17
Excessive 1. Worn, bent or loose blade. 1. Replace blade. Tighten
vibration blade bolt.
2. Bent engine crankshaft. 2. Contact a Sears or other
qualified service center.
Starter rope hard 1. Engine flywheel brake is on 1. Depress control bar to
to pull when control bar is released. upper handle before
pulling starter rope.
2. Bent engine crankshaft. 2. Contact a Sears or other
qualified service center.
3. Blade adapter broken. 3. Replace blade adapter.
4. Blade dragging in grass. 4. Move lawn mower to cut
grass or to hard surface.
Grass catcher 1. Cutting height too low. 1. Raise cutting height.
not filling (if so 2. Lift on blade worn off. 2. Replace blade.
equipped) 3. Catcher not venting air. 3. Clean grass catcher.
Hard to push 1. Grass is too high or wheel 1. Raise cutting height.
height is too low.
2. Rear of lawn mower 2. Raise rear of lawn mower
housing or cutting blade housing one (1) setting higher.
dragging in grass.
3. Grass catcher too full. 3. Empty grass catcher.
4. Handle height position not 4. Adjust handle height to suit.
right for you.
PROBLEM CAUSE CORRECTION
TROUBLESHOOTING CHART
13
SERVICE AND ADJUSTMENTS
CAUTION: Before performing any
service and adjustments:
• Release control bar and stop engine.
• Make sure the blade and all moving
parts have completely stopped.
• Disconnect spark plug wire from spark
plug and place where it cannot come
in contact with plug.
LAWN MOWER
TO ADJUST CUTTING HEIGHT
See "TO ADJUST CUTTING HEIGHT" in the
Operation section of this manual.
REAR DEFLECTOR
The rear deflector, attached between the rear
wheels of your lawn mower, is provided to
minimize the possibility that objects will be
thrown out the rear of the lawn mower into the
operator's mowing position. If the rear
deflector becomes damaged, it should be
replaced.
TO ADJUST HANDLE
The handle on your lawn mower has
three (3) height positions - adjust to
height that suits you.
• Squeeze the bottom ends of lower
handle towards each other until the pin
in handle can be inserted into one of
the three height adjustment holes.
MUFFLER
Inspect and replace corroded muffler as it
could create a fire hazard and/or damage.
SPARK PLUG
Replace spark plugs at the beginning of
each mowing season or after every 100
hours of operation, whichever occurs first.
Spark plug type and gap setting are
shown in “PRODUCT SPECIFICATIONS”
in Maintenance section of this manual.
CLEANING
IMPORTANT: For best performance,
keep mower housing free of built-up
grass and trash. Clean the underside of
your mower after each use.
CAUTION: Disconnect spark plug wire
from spark plug and place wire where it
cannot come in contact with the spark
plug.
• Clean the underside of your lawn
mower by scraping to remove build-up
of grass and trash.
• Clean engine often to keep trash from
accumulating. A clogged engine runs
hotter and shortens engine life.
• Keep finished surfaces and wheels free
of all gasoline, oil,etc.
• We do not recommend using a garden
hose to clean lawn mower unless the
electrical system, muffler, air filter and
carburetor are covered to keep water
out. Water in engine can result in
shortened engine life.
Slots
Lip
Cover
tabs
Back plate
Cartridge Cover
High
3-position
handle
adjustment
bracket
Handle pin
Medium
Low
Squeeze
ENGINE SPEED
Your engine speed has been factory set.
Do not attempt to increase engine speed
or it may result in personal injury. If you
believe that the engine is running too fast
or too slow, take your lawn mower to a
Sears or other qualified service center for
repair and adjustment.
16
Does not start 1. Dirty air filter. 1. Clean/replace air filter.
2. Out of fuel. 2. Fill fuel tank.
3. Stale fuel. 3. Drain tank and refill with
fresh clean fuel.
4. Water in fuel. 4. Drain fuel tank and
carburetor and refill tank
with fresh gasoline.
5. Spark plug wire is 5. Connect wire to plug.
disconnected.
6. Bad spark plug. 6. Replace spark plug.
7. Loose blade or broken blade 7. Tighten blade bolt or
adapter. replace blade adapter.
8. Control bar in released 8. Depress control bar to
position. handle.
9. Control bar defective. 9. Replace control bar.
Loss of power 1. Rear of lawn mower housing 1. Set to “Higher Cut”
or cutting blade dragging position.
in heavy grass.
2. Cutting too much grass. 2. Set to “Higher Cut”
position.
3. Dirty air filter. 3. Clean/replace air filter.
4. Buildup of grass, leaves, 4. Clean underside of mower
and trash under mower. housing.
5. Too much oil in engine. 5. Check oil level.
6. Walking speed too fast. 6. Cut at slower walking
speed.
Poor cut – uneven 1. Worn, bent or loose blade. 1. Replace blade. Tighten
blade bolt.
2. Wheel heights uneven. 2. Set all wheels at same
height.
3. Buildup of grass, leaves 3. Clean underside of
and trash under mower. mower housing.
PROBLEM CAUSE CORRECTION
TROUBLESHOOTING CHART
14
STORAGE
Immediately prepare your lawn mower for
storage at the end of the season or if the unit
will not be used for 30 days or more.
LAWN MOWER
When lawn mower is to be stored for a period
of time, clean it thoroughly, remove all dirt,
grease, leaves, etc. Store in a clean, dry area.
1. Clean entire lawn mower (See
"CLEANING" in the Maintenance
section of this manual).
2. Lubricate as shown in the Mainte-
nance section of this manual.
3. Be sure that all nuts, bolts, screws, and
pins are securely fastened. Inspect
moving parts for damage, breakage
and wear. Replace if necessary.
4. Touch up all rusted or chipped paint
surfaces; sand lightly before painting.
HANDLE
You can fold your lawn mower handle for
storage.
1. Loosen the two (2) handle knobs on
sides of the upper handle and allow
handle to fold down to the rear.
2. Squeeze the bottom ends of lower
handle toward each other until pins in
handle clear the brackets and pivot
entire handle assembly forward and
allow it to rest on mower.
• When setting up your handle from the
storage position, the lower handle will
require manually locking into the
mowing position.
CARBURETOR
Your carburetor has a non-adjustable
fixed main jet for mixture control. If your
engine does not operate properly due to
suspected carburetor problems, take your
lawn mower to a Sears or other qualified
service center for repair and/or adjust-
ment.
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 Sears or
other qualified service center, which has
proper equipment and experience to
make any necessary adjustments.
Handle pin
3-Position
handle
adjustment
bracket
Squeeze
Mowing
position
Fold
backward
Operator presence
control bar
Fold
forward
for
storage
Upper handle
Lower handle
IMPORTANT: When folding the handle for
storage or transportation, be sure to fold the
handle as shown or you any damage the
control cables.
15
ENGINE
FUEL SYSTEM
IMPORTANT: It is important to prevent gum
deposits from forming in essential fuel system
parts such as 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.
1. Drain the fuel tank.
2. 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
damage may occur.
• Use fresh fuel next season.
NOTE: Fuel stabilizer 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 stabilizer
container. Run engine at least 10 minutes
after adding stabilizer to allow the stabilizer to
reach the carburetor. Do not drain the gas
tank and carburetor if using fuel stabilizer.
ENGINE OIL
Drain oil (with engine warm) and replace with
clean engine oil. (See "ENGINE" in the
Maintenance section of this manual).
CYLINDER
1. Remove spark plug.
2. Pour one ounce (29 ml) of oil through
spark plug hole into cylinder.
3. Pull starter handle slowly a few times
to distribute oil.
4. 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 mower while
engine and exhaust areas are still warm.
CAUTION: Never store the lawn
mower 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.
14
STORAGE
Immediately prepare your lawn mower for
storage at the end of the season or if the unit
will not be used for 30 days or more.
LAWN MOWER
When lawn mower is to be stored for a period
of time, clean it thoroughly, remove all dirt,
grease, leaves, etc. Store in a clean, dry area.
1. Clean entire lawn mower (See
"CLEANING" in the Maintenance
section of this manual).
2. Lubricate as shown in the Mainte-
nance section of this manual.
3. Be sure that all nuts, bolts, screws, and
pins are securely fastened. Inspect
moving parts for damage, breakage
and wear. Replace if necessary.
4. Touch up all rusted or chipped paint
surfaces; sand lightly before painting.
HANDLE
You can fold your lawn mower handle for
storage.
1. Loosen the two (2) handle knobs on
sides of the upper handle and allow
handle to fold down to the rear.
2. Squeeze the bottom ends of lower
handle toward each other until pins in
handle clear the brackets and pivot
entire handle assembly forward and
allow it to rest on mower.
• When setting up your handle from the
storage position, the lower handle will
require manually locking into the
mowing position.
CARBURETOR
Your carburetor has a non-adjustable
fixed main jet for mixture control. If your
engine does not operate properly due to
suspected carburetor problems, take your
lawn mower to a Sears or other qualified
service center for repair and/or adjust-
ment.
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 Sears or
other qualified service center, which has
proper equipment and experience to
make any necessary adjustments.
Handle pin
3-Position
handle
adjustment
bracket
Squeeze
Mowing
position
Fold
backward
Operator presence
control bar
Fold
forward
for
storage
Upper handle
Lower handle
IMPORTANT: When folding the handle for
storage or transportation, be sure to fold the
handle as shown or you any damage the
control cables.
15
ENGINE
FUEL SYSTEM
IMPORTANT: It is important to prevent gum
deposits from forming in essential fuel system
parts such as 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.
1. Drain the fuel tank.
2. 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
damage may occur.
• Use fresh fuel next season.
NOTE: Fuel stabilizer 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 stabilizer
container. Run engine at least 10 minutes
after adding stabilizer to allow the stabilizer to
reach the carburetor. Do not drain the gas
tank and carburetor if using fuel stabilizer.
ENGINE OIL
Drain oil (with engine warm) and replace with
clean engine oil. (See "ENGINE" in the
Maintenance section of this manual).
CYLINDER
1. Remove spark plug.
2. Pour one ounce (29 ml) of oil through
spark plug hole into cylinder.
3. Pull starter handle slowly a few times
to distribute oil.
4. 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 mower while
engine and exhaust areas are still warm.
CAUTION: Never store the lawn
mower 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.
13
SERVICE AND ADJUSTMENTS
CAUTION: Before performing any
service and adjustments:
• Release control bar and stop engine.
• Make sure the blade and all moving
parts have completely stopped.
• Disconnect spark plug wire from spark
plug and place where it cannot come
in contact with plug.
LAWN MOWER
TO ADJUST CUTTING HEIGHT
See "TO ADJUST CUTTING HEIGHT" in the
Operation section of this manual.
REAR DEFLECTOR
The rear deflector, attached between the rear
wheels of your lawn mower, is provided to
minimize the possibility that objects will be
thrown out the rear of the lawn mower into the
operator's mowing position. If the rear
deflector becomes damaged, it should be
replaced.
TO ADJUST HANDLE
The handle on your lawn mower has
three (3) height positions - adjust to
height that suits you.
• Squeeze the bottom ends of lower
handle towards each other until the pin
in handle can be inserted into one of
the three height adjustment holes.
MUFFLER
Inspect and replace corroded muffler as it
could create a fire hazard and/or damage.
SPARK PLUG
Replace spark plugs at the beginning of
each mowing season or after every 100
hours of operation, whichever occurs first.
Spark plug type and gap setting are
shown in “PRODUCT SPECIFICATIONS”
in Maintenance section of this manual.
CLEANING
IMPORTANT: For best performance,
keep mower housing free of built-up
grass and trash. Clean the underside of
your mower after each use.
CAUTION: Disconnect spark plug wire
from spark plug and place wire where it
cannot come in contact with the spark
plug.
• Clean the underside of your lawn
mower by scraping to remove build-up
of grass and trash.
• Clean engine often to keep trash from
accumulating. A clogged engine runs
hotter and shortens engine life.
• Keep finished surfaces and wheels free
of all gasoline, oil,etc.
• We do not recommend using a garden
hose to clean lawn mower unless the
electrical system, muffler, air filter and
carburetor are covered to keep water
out. Water in engine can result in
shortened engine life.
Slots
Lip
Cover
tabs
Back plate
Cartridge Cover
High
3-position
handle
adjustment
bracket
Handle pin
Medium
Low
Squeeze
ENGINE SPEED
Your engine speed has been factory set.
Do not attempt to increase engine speed
or it may result in personal injury. If you
believe that the engine is running too fast
or too slow, take your lawn mower to a
Sears or other qualified service center for
repair and adjustment.
16
Does not start 1. Dirty air filter. 1. Clean/replace air filter.
2. Out of fuel. 2. Fill fuel tank.
3. Stale fuel. 3. Drain tank and refill with
fresh clean fuel.
4. Water in fuel. 4. Drain fuel tank and
carburetor and refill tank
with fresh gasoline.
5. Spark plug wire is 5. Connect wire to plug.
disconnected.
6. Bad spark plug. 6. Replace spark plug.
7. Loose blade or broken blade 7. Tighten blade bolt or
adapter. replace blade adapter.
8. Control bar in released 8. Depress control bar to
position. handle.
9. Control bar defective. 9. Replace control bar.
Loss of power 1. Rear of lawn mower housing 1. Set to “Higher Cut”
or cutting blade dragging position.
in heavy grass.
2. Cutting too much grass. 2. Set to “Higher Cut”
position.
3. Dirty air filter. 3. Clean/replace air filter.
4. Buildup of grass, leaves, 4. Clean underside of mower
and trash under mower. housing.
5. Too much oil in engine. 5. Check oil level.
6. Walking speed too fast. 6. Cut at slower walking
speed.
Poor cut – uneven 1. Worn, bent or loose blade. 1. Replace blade. Tighten
blade bolt.
2. Wheel heights uneven. 2. Set all wheels at same
height.
3. Buildup of grass, leaves 3. Clean underside of
and trash under mower. mower housing.
PROBLEM CAUSE CORRECTION
TROUBLESHOOTING CHART
12
TO SHARPEN BLADE
NOTE: We do not recommend sharpen-
ing blade - but if you do, be sure the blade
is balanced.
Care should be taken to keep the blade
balanced. An unbalanced blade will
cause eventual damage to lawn mower or
engine.
• The blade can be sharpened with a file
or on a grinding wheel. Do not attempt
to sharpen while on the mower.
• To check blade balance, drive a nail
into a beam or wall. Leave about one
inch of the straight nail exposed. Place
center hole of blade over the head of
the nail. If blade is balanced, it should
remain in a horizontal position. If either
end of the blade moves downward,
sharpen the heavy end until the blade
is balanced.
GRASS CATCHER
• The grass catcher may be hosed with
water, but must be dry when used.
• Check your grass catcher often for damage
or deterioration. Through normal use it will
wear. If catcher needs replacing, replace
only with a manufacturer approved
replacement catcher. Give the lawn mower
model number when ordering.
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 operating
temperature.
NOTE: Although multi-viscosity oils
(5W30, 10W30 etc.) improve starting in
cold weather, these multi-viscosity oils will
result in increased oil consumption when
used above 32°F. 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
lawn mower 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. Tighten oil plug
securely each time you check the oil level.
Container
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
SAE VISCOSITY GRADES
-20° 0° 30° 40°
80°
100°
-30°
-20° 0°
20° 30° 40°
°
F
°
C
32°
-10°
10°
60°
5W-30
SAE 30
TO CHANGE ENGINE OIL
NOTE: Before tipping lawn mower to
drain oil, drain fuel tank by running
engine until fuel tank is empty.
1. Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
2. Remove engine oil cap; lay aside on a
clean surface.
3. Tip lawn mower on its side as shown
and drain oil into a suitable container.
Rock lawn mower back and forth to
remove any oil trapped inside of
engine.
4. Wipe off any spilled oil from lawn
mower or side of engine.
5. Fill engine with oil. See “ADD OIL” in
the Operation section of this manual.
6. Reconnect spark plug wire to spark
plug.
AIR FILTER
Your engine will not run properly and may
be damaged by using a dirty air filter.
Replace the air filter every 100 hours of
operation or every season, more often if
you mow in very dusty, dirty conditions.
TO CLEAN AIR FILTER
1. Loosen screw and tilt cover to remove.
2. Carefully remove cartridge.
3. Clean by gently tapping on a flat
surface. If very dirty, replace cartridge.
CAUTION: Petroleum solvents, such as
kerosene, are not to be used to clean
cartridge. They may cause deterioration
of the cartridge. Do not oil cartridge. Do
not use pressurized air to clean or dry
cartridge.
4. Install cartridge, then replace cover
making sure the tabs are aligned with
the slots in the back plate. Fasten
screw securely.
17
Excessive 1. Worn, bent or loose blade. 1. Replace blade. Tighten
vibration blade bolt.
2. Bent engine crankshaft. 2. Contact a Sears or other
qualified service center.
Starter rope hard 1. Engine flywheel brake is on 1. Depress control bar to
to pull when control bar is released. upper handle before
pulling starter rope.
2. Bent engine crankshaft. 2. Contact a Sears or other
qualified service center.
3. Blade adapter broken. 3. Replace blade adapter.
4. Blade dragging in grass. 4. Move lawn mower to cut
grass or to hard surface.
Grass catcher 1. Cutting height too low. 1. Raise cutting height.
not filling (if so 2. Lift on blade worn off. 2. Replace blade.
equipped) 3. Catcher not venting air. 3. Clean grass catcher.
Hard to push 1. Grass is too high or wheel 1. Raise cutting height.
height is too low.
2. Rear of lawn mower 2. Raise rear of lawn mower
housing or cutting blade housing one (1) setting higher.
dragging in grass.
3. Grass catcher too full. 3. Empty grass catcher.
4. Handle height position not 4. Adjust handle height to suit.
right for you.
PROBLEM CAUSE CORRECTION
TROUBLESHOOTING CHART
11
PRODUCT SPECIFICATIONS
MODEL NUMBER: 944.360441
SERIALNUMBER:
DATE OF PURCHASE :
GASOLINE CAPACITY/ TYPE: 1.6 QUARTS
UNLEADED REGULAR
OIL TYPE (API-SF-SJ): SAE 30 (ABOVE 32°F)
SAE 5W-30 (BELOW 32°F)
OIL CAPACITY: 20 OZS.
SPARK PLUG (GAP: .030") CHAMPION RJ19LM
BLADE BOLT TORQUE: 35-40 FT. LBS.
• The model and serial numbers will be found on a decal attached to the rear of the
lawn mower housing. Record both serial number and date of purchase in the space
provided above.
LAWN MOWER
Always observe safety rules when perform-
ing any maintenance.
TIRES
• Keep tires free of gasoline, oil, or insect
control chemicals which can harm rubber.
• Avoid stumps, stones, deep ruts, sharp
objects and other hazards that may cause
tire damage.
BLADE CARE
For best results, mower blade must be
kept sharp. Replace bent or damaged
blades.
TO REMOVE BLADE
1. Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
2. Turn lawn mower on its side. Make
sure air filter and carburetor are up.
3. Use a wood block between blade and
mower housing to prevent blade from
turning when removing blade bolt.
NOTE: Protect your hands with gloves
and/or wrap blade with heavy cloth.
4. Remove blade bolt by turning counter-
clockwise.
5. Remove blade and attaching hard-
ware (bolt, lock washer and hardened
washer).
NOTE: Remove the blade adapter and
check the key inside hub of blade
adapter. The key must be in good
condition to work properly. Replace
adapter if damaged.
TO REPLACE BLADE
1. Position the blade adapter on the
engine crankshaft. Be sure key in
adapter and crankshaft keyway are
aligned.
2. Position blade on the blade adapter
aligning the two (2) holes in the blade
with the raised lugs on the adapter.
3. Be sure the trailing edge of blade
(opposite sharp edge) is up toward
the engine.
4. Install the blade bolt with the lock
washer and hardened washer into
blade adapter and crankshaft.
5. Use block of wood between blade and
lawn mower housing and tighten the
blade bolt, turning clockwise.
• The recommended tightening torque is
35-40 ft. lbs.
IMPORTANT: Blade bolt is grade 8 heat
treated.
Blade adapter
Blade
bolt
Crankshaft
keyway
Hardened
washer
Lockwasher
Blade adapter
Key
Blade
Trailing edge
Crank
shaft
18
REPAIR PARTS
ROTARY LAWN MOWER - - MODEL NUMBER 944.360441
10
Spray lubricant
See "ENGINE" in Maintenance section.
MAINTENANCE
LUBRICATION CHART
GENERAL RECOMMENDATIONS
The warranty on this lawn mower does
not cover items that have been subjected
to operator abuse or negligence. To
receive full value from the warranty,
operator must maintain mower as
instructed in this manual.
Some adjustments will need to be made
periodically to properly maintain your
unit.
All adjustments in the Service and
Adjustments section of this manual
should be checked at least once each
season.
• Once a year, replace the spark plug,
replace air filter element and check
blade for wear. A new spark plug and
clean/new air filter element assure
proper air-fuel mixture and help your
engine run better and last longer.
• Follow the maintenance schedule in
this manual.
BEFORE EACH USE
1. Check engine oil level.
2. Check for loose fasteners.
LUBRICATION
Keep unit well lubricated (See "LUBRI-
CATION CHART").
Wheel adjusters (on each wheel)
Handle bracket mounting pins
Rear door
hinge
Engine oil
Change Engine Oil
Lubrication Chart
Clean Air Filter
Replace Air Filter Paper Cartridge
Clean or Replace Spark Plug
FILL IN DATES
AS YOU COMPLETE
REGULAR SERVICE
MAINTENANCE SCHEDULE
BEF
OR
E
EAC
H
US
E
AFTER
E
ACH
U
S
E
E
V
E
R
Y
25
HOU
RS
OR
EVER
Y
S
E
AS
ON
SERVICE DATES
Check for Loose Fasteners
BE
F
ORE STO
R
AGE
Check Engine Oil Level
Check/Sharpen/Replace Blade
Inspect Muffler
1 - Change more often when operating under a heavy load or in high ambient temperatures.
2 - Service more often when operating in dirty or dusty conditions.
3 - Replace blades more often when mowing in sandy soil.
4 - Charge 48 hours at end of season.
1,2
3
2
M
O
W
E
R
E
N
G
I
N
E
2
Clean Lawn Mower
Clean/Inspect Grass Catcher
(If Equipped)
E
V
E
RY
10
HO
U
RS
Clean Under Drive Cover
(Power-Propelled Mowers)
Clean Battery/Recharge
(Electric Start Mowers)
4
Check drive belt/pulleys
(Power-Propelled Mowers)
2
Mulcher
door hinge
pin
19
KEY PART
NO. NO. DESCRIPTION
35 166785 Locknut 5/16-18
36 160828 Shoulder Bolt 5/16-18
37 151162 Wheel Assembly
38 164362 Shoulder Bolt
39 83923 Flanged Locknut
40 77400 Hubcap
41 88652 Hinge Screw
42 165766 Spring (LH)
43 165767 Spring (RH)
44 165912 Door Bolt
45 150406 Hex Head Thread Rolling Screw 3/8-16 x 1
46 107339X Danger Decal
47 63124 Nut
48 167131X004 Axle Arm Assembly - RR
49 151161 Wheel
50 57143 Wave Washer
51 73990500 Nut
52 167712 Housing Assembly (Incl. Ref. #17, 18 & 46)
53 851084 Hex Head Screw 3/8-24 x 1-3/8 Grade 8
54 850263 Helical Lockwasher
55 851074 Hardened Washer
56 165833 21'’ Blade
57 851514 Blade Adapter
58 161551 Adjustment Bolt
67 167710 Grass Bag
68 165755 Catcher Frame
70 - - - Engine, Briggs & Stratton, Model Number
12H802-2639-B1 (See Breakdown)
- - 162300 Warning Decal (Not Shown)
- - 177188 Owner's Manual, English
- - 177189 Owner’s Manual, French
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
1 131696 Control Bar
2 166860X479 Upper Handle
3 161105X479 Lower Handle
4 132001 Rope Guide
5 63601 Locknut 1/4-20
6 131959 Handle Bolt
7 66426 Wire Tie
8 74780512 Hex Bolt 5/16-18 x 3/4
9 154132 Hinge Bracket
10 165754 Mulcher Door
11 176556 Engine Zone Control Cable
12 750097 Hex Washer Head Screw #10-24 x 1/2
13 86899X004 Up-Stop Bracket
14 136376 Handle Knob
15 51793 Hairpin Cotter
16 147286 Hinge Rod
17 165946X479 Support Bracket
18 17600406 Screw
19 167132X004 Axle Arm Assembly - LF
20 167133X004 Axle Arm Assembly - RF
21 165858 Rear Skirt
22 168360X004 Selector Spring
23 166875 Rear Door Assembly Kit (Incl. Springs)
24 751153 Locknut 5/16-18
25 166236X479 Handle Bracket Assembly (Left)
26 166243x479 Handle Bracket Assembly (Right)
27 851856 Screw 1/4-20 x 3/8
28 152124 Hinge Spring
29 160835X007 Wheel Adjusting Bracket - Front
30 19112222 Spacer
31 165760 Clip on Discharge Guard
33 87877 Selector Knob
34 167130X004 Axle Arm Assembly - LR
KEY PART
NO. NO. DESCRIPTION
ROTARY LAWN MOWER - - MODEL NUMBER 944.360441
IMPORTANT: Do not oil or grease plastic
wheel bearings. viscous lubricants will
attract dust and dirt that will shorten the
life of the self-lubricating bearings. If you
feel they must be lubricated, use only a
dry, powdered graphite type lubricant
sparingly.
9
MULCHING MOWING TIPS
IMPORTANT: For best performance, keep
mower housing free of built-up grass and
trash. See “CLEANING” in the Maintenance
section of this manual.
• The special mulching blade will recut the
grass clippings many times and reduce
them in size so that as they fall onto the
lawn they will disperse into the grass and
not be noticed. Also, the mulched grass
will biodegrade quickly to provide nutrients
for the lawn. Always mulch with your
highest engine (blade) speed as this will
provide the best recutting action of the
blades.
• Avoid cutting your lawn when it is wet. Wet
grass tends to form clumps and interferes
with the mulching action. The best time to
mow your lawn is the early afternoon. At
this time the grass has dried and the newly
cut area will not be exposed to the direct
sun.
• For best results, adjust the lawn mower
cutting height so that the lawn mower cuts
off only the top one-third of the grass
blades. If the lawn is overgrown it will be
necessary to raise the height of cut to
reduce pushing effort and to keep from
overloading the engine and leaving
clumps of mulched grass. For extremely
heavy mulching, reduce your width of cut
by overlapping previously cut path and
mow slowly.
• Certain types of grass and grass condi-
tions may require that an area be mulched
a second time to completely hide the
clippings. When doing a second cut, mow
across or perpendicular to the first cut path.
• Change your cutting pattern from week to
week. Mow north to south one week then
change to east to west the next week. This
will help prevent matting and graining of
the lawn.
Max 1/3
TO STOP ENGINE
• To stop engine, release operator
presence control bar.
NOTE: In cooler weather it may be
necessary to repeat priming steps. In
warmer weather over priming may cause
flooding and engine will not start. If you do
flood engine, wait a few minutes before
attempting to start and do not repeat
priming steps.
MOWING TIPS
• Under certain conditions, such as very
tall grass, it may be necessary to raise
the height of cut to reduce pushing
effort and to keep from overloading the
engine and leaving clumps of grass
clippings. It may also be necessary to
reduce ground speed and/or run the
lawn mower over the area a second
time.
• For extremely heavy cutting, reduce the
width of cut by overlapping previously
cut path and mow slowly.
• For better grass bagging and most
cutting conditions, the engine speed
should be set in the fast position.
• Pores in cloth grass catchers can
become filled with dirt and dust with use
and catchers will collect less grass. To
prevent this, regularly hose catcher off
with water and let dry before using.
• Keep top of engine around starter clear
and clean of grass clippings and chaff.
This will help engine air flow and
extend engine life.
20
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
307
13
337
635
383
REQUIRES SPECIAL TOOLS
TO INSTALL. SEE REPAIR
INSTRUCTION MANUAL.
3
306
11
9
10
54
50
51
7
5
584
585
684
287
525
524
842
1019 LABEL KIT
1058 OWNER'S MANUAL
1
2
8
847
523
869
870
871
27
27
32
26
28
25
29
40
40
35
36
33
45
34
45
24
741
16
146
20
12
22
46
43
15
4
1095 VALVE
GASKET SET
7
9
32A
8
Gasoline filler cap
(Discard debris
plug inside)
Engine oil cap
SIMPLE STEPS TO REMEMBER WHEN
CONVERTING YOUR LAWN MOWER:
FOR MULCHING -
• Rear door closed.
• Mulcher door closed.
FOR REAR BAGGING -
• Grass catcher installed.
• Mulcher door closed.
FOR SIDE DISCHARGING -
• Rear door closed.
• Side discharge deflector installed.
CAUTION: Do not run your lawn
mower without rear door closed or
approved grass catcher in place. Never
attempt to operate the lawn mower with
the rear door removed or propped open.
BEFORE STARTING ENGINE
ADD OIL
Your lawnmower is shipped without oil in
the engine. Engine holds 20 oz. of oil.
For type and grade of oil to use, see
“ENGINE” in Maintenance section of this
manual.
1. Be sure lawnmower is level and area
around oil fill is clean.
2. Remove engine oil cap and fill to the
full line on the dipstick. Pour oil slowly.
Do not over fill.
NOTE: Allow oil to settle down into engine
for accurate reading. To read proper level,
tighten engine oil cap, then remove it to
read the dipstick.
3. Reinstall engine oil cap and tighten.
• Check oil level before each use. Add
oil if needed. Fill to full line on dipstick.
• Change the oil after every 25 hours of
operation or each season. You may
need to change the oil more often
under dusty, dirty conditions.
ADD GASOLINE
NOTE: Before filling fuel tank, remove
and discard the debris plug that is inside
the tank.
• Fill fuel tank. Use fresh, clean, regular
unleaded gasoline with a minimum of
87 octane. Do not mix oil with gaso-
line. Purchase fuel in quantities that
can be used within 30 days to assure
fuel freshness.
WARNING: 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. 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.
CAUTION: Fill to bottom of gas tank
filler neck. Do not overfill. Wipe off any
spilled oil or fuel. Do not store, spill or
use gasoline near an open flame.
TO START ENGINE
NOTE: Due to protective coatings on the
engine, a small amount of smoke may be
present during the initial use of the
product and should be considered
normal.
1. To start a cold engine, push primer
three (3) times before trying to start.
Use a firm push. This step is not
usually necessary when starting an
engine which has already run for a
few minutes.
2. Hold operator presence control bar
down to the handle and pull starter
handle quickly. Do not allow starter
rope to snap back.
21
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
104
137
276
95
127
708
617
276
130
365
125
97
134
975
133
117
163
968
445
425
443
163
529
159
970
966
976
188
222
104
137
276
127
708
121 CARBURETOR OVERHAUL KIT
617
137
276
708
617
977 CARBURETOR
GASKET SET
163
163
134
81
613
300
668
7
Open mulcher door
Discharge
deflector
TO CONVERT MOWER
Your lawn mower was shipped ready to
be used as a mulcher. To convert to
bagging or discharging:
REAR BAGGING
• Lift rear door of the lawn mower and
place the grass catcher frame hooks
onto the door pivot pins.
• To convert to mulching or discharging
operation, remove grass catcher and
close rear door.
Pivot pins
SIDE DISCHARGING
• Rear door must be closed.
• Open mulcher door and install dis-
charge deflector under guard as
shown.
• Mower is now ready for discharging
operation.
• To convert to mulching or bagging
operation, discharge deflector must be
removed and mulcher door must be
closed.
The operation of any lawn
mower can result in foreign
objects thrown into the
eyes, which can result in
severe eye damage.
Always wear safety glasses or eye
shields while operating your lawn mower
or performing any adjustments or repairs.
We recommend a wide vision safety
mask over spectacles or standard safety
glasses.
HOW TO USE YOUR LAWN MOWER
ENGINE SPEED
The engine speed was set at the factory
for optimum performance. Speed is not
adjustable.
ENGINE ZONE CONTROL
CAUTION: Federal regulations require
an engine control to be installed on this
lawn mower in order to minimize the risk
of blade contact injury. Do not under any
circumstances attempt to defeat the
function of the operator control. The blade
turns when the engine is running.
• Your lawn mower is equipped with an
operator presence control bar which
requires the operator to be positioned
behind the lawn mower handle to start and
operate the lawn mower.
TO ADJUST CUTTING HEIGHT
Raise wheels for low cut and lower
wheels for high cut. Adjust cutting height
to suit your requirements. Medium
position is best for most lawns.
• To change cutting height, squeeze
adjuster lever toward wheel. Move wheel
up or down to suit your requirements. Be
sure all wheels are in the same setting.
NOTE: Adjuster is properly positioned
when plate tab inserts into hole in lever.
Also, 9-position adjusters (if so equipped)
allow lever to be positioned between the
plate tabs.
Lower Wheels for High Cut
Raise Wheels for Low Cut
Plate Tab
Lever
22
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
332
304
305
363
455
23
1036 EMISSIONS LABEL
55
456
58
60
459
689
597
608
65
592
921
969
190
670
957
972
1059
601
187
1211
1210
6
OPERATION
KNOW YOUR LAWN MOWER
READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR LAWN
MOWER. Compare the illustrations with your lawn mower to familiarize yourself with the
location of various controls and adjustments. Save this manual for future reference.
CAUTION
OR WARNING
FAST SLOWENGINE
ON
ENGINE
OFF
OILFUELCHOKE DANGER, KEEP HANDS
AND FEET AWAY
Starter handle
Gasoline filler cap
Housing
Primer
Wheel adjuster
(on each wheel)
Handle knob
Grass catcher
Engine oil cap w/dipstick
Operator presence control bar
Engine zone control cable
MEETS CPSC SAFETY REQUIREMENTS
Sears rotary walk-behind power lawn mowers conform to the safety standards of the American
National Standards Institute and the U.S. Consumer Product Safety Commission. The blade
turns when the engine is running.
Operator presence control bar - must be
held down to the handle to start the engine.
Release to stop the engine.
Mulcher door – allows conversion to
discharge or bagging operation.
These symbols may appear on your lawn mower or in literature supplied with the product. Learn and
understand their meaning.
IMPORTANT: This lawn mower is shipped
WITHOUT OIL OR GASOLINE in the engine.
Mulcher door
Starter handle - used for starting the engine.
Primer - pumps additional fuel from the
carburetor to the cylinder for use when
starting a cold engine.
Muffler
23
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
334
851
333
202
209
356
562
505
227
616
404
615
922
621
923
358 ENGINE GASKET SET
12
3
20
51
585
7
9
163
524
668842
48
745
5
TO INSTALL ATTACHMENTS
Your lawn mower was shipped ready to be
used as a mulcher. To convert to bagging or
discharging, see "TO CONVERT MOWER"
in the Operation section of this manual.
Catcher
frame
handle
Vinyl bindings
Frame
opening
TO ASSEMBLE GRASS CATCHER
1. Put grass catcher frame into grass bag
with rigid part of bag on the bottom.
Make sure the frame handle is outside
of the bag top.
2. Slip vinyl bindings over frame.
NOTE: If vinyl bindings are too stiff, hold them
in warm water for a few minutes. If bag gets
wet, let it dry before using.
3-Position
handle
adjustment
bracket
Handle pin
Lift up
Operator presence
control bar
Upper handle
Mowing
position
Lift up
Lower handle
Squeeze
24
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
KEY PART
NO. NO. DESCRIPTION
1 493260 Cylinder Assembly
2 399269 Kit-Bushing/Seal
3 299819 • Seal-Oil (Magneto Side)
4 493279 Sump-Engine
5 691160 Head-Cylinder
7 692249 •+Gasket-Cylinder Head
8 695250 Breather Assembly
9 272481 •+Gasket-Breather
10 691125 Screw (Breather Assembly)
11 691781 Tube-Breather
12 692232 • Gasket-Crankcase
13 690912 Screw (Cylinder Head)
15 691680 Plug-Oil Drain
16 691451 Crankshaft
20 399781 • Seal-Oil (PTO Side)
22 691092 Screw (Engine Sump)
23 692315 Flywheel
24 222698 Key-Flywheel
25 499429 Piston Assembly (Standard)
499430 Piston Assembly (.010” O.S.)
499431 Piston Assembly (.020" O.S.)
499432 Piston Assembly (.030" O.S.)
26 499425 Ring Set-Piston (Standard)
499426 Ring Set-Piston (.010” O.S.)
499427 Ring Set-Piston (.020”O.S.)
499428 Ring Set-Piston (.030” O.S.)
27 691866 Lock-Piston Pin
28 499423 Pin-Piston
29 499424 Rod-Connecting
32 691664 Screw (Connecting Rod)
32A 695759 Screw (Connecting Rod)
33 262651 Valve-Exhaust
34 262652 Valve-Intake
35 691270 Spring-Valve (Intake)
36 691270 Spring-Valve (Exhaust)
40 692194 Retainer-Valve
43 691997 Slinger-Governor/Oil
45 690548 Tappet-Valve
46 691449 Camshaft
KEY PART
NO. NO. DESCRIPTION
48 498826 Short Block (Replacement Engine
12J802-2915-B1)
50 497465 Manifold-Intake
51 272199 • Gasket-Intake
54 691650 Screw (Intake Manifold)
55 691421 Housing-Rewind Starter
58 692259 Rope-Starter (Cut to Length)
60 281434 Grip-Starter Rope
65 690759 Screw (Rewind Starter)
81 691740 Lock-Muffler Screw
95 691636 Screw (Throttle Valve)
97 493267 Shaft-Throttle
104 691242 Ø Pin-Float Hinge
117 494870 Jet-Main (Standard)
497315 Jet-Main (High Altitude)
121 498260 Kit-Carburetor Overhaul
125 498170 Carburetor
127 694468 Ø Plug-Welch
130 691203 Valve-Throttle
133 398187 Float-Carburetor
134 398188 Ø Valve-Needle/Seat
137 693981 ؇Gasket-Float Bowl
146 690979 Key-Timing
159 691753 Bracket-Air Cleaner Primer
163 272653 •Ø‡Gasket-Air Cleaner
187 691050 Line-Fuel (Cut to Required Length)
188 690877 Screw (Control Bracket)
190 690940 Screw (Fuel Tank)
202 691829 Link-Mechanical Governor
209 690319 Spring-Governor
222 692467 Bracket-Control
227 690783 Control Lever-Governor
276 271716 ؇Sealing Washer
287 690940 Screw (Dipstick Tube)
300 692038 Muffler
304 695892 Housing-Blower
305 691108 Screw (Blower Housing)
306 690450 Shield-Cylinder
307 690345 Screw (Cylinder Shield)
4
ASSEMBLY
Read these instructions and this manual in its
entirety before you attempt to assemble or
operate your new lawn mower.
IMPORTANT: This lawn mower is shipped
WITHOUT OIL OR GASOLINE in the engine.
Your new lawn mower has been assembled
at the factory with the exception of those parts
left unassembled for shipping purposes. All
parts such as nuts, washers, bolts, etc.,
necessary to complete the assembly have
been placed in the parts bag. To ensure safe
and proper operation of your lawn mower, all
parts and hardware you assemble must be
tightened securely. Use the correct tools as
necessary to ensure proper tightness.
TO REMOVE LAWN MOWER FROM
CARTON
1. Remove loose parts included with
mower.
2. Cut down two end corners of carton
and lay end panel down flat.
3. Remove all packing materials except
padding between upper and lower
handle and padding holding operator
presence control bar to upper handle.
4. Roll lawn mower out of carton and
check carton thoroughly for additional
loose parts.
• Mower blades are sharp and can cut.
Wrap the blade(s) or wear gloves, and
use extra caution when servicing them.
• Do not change the engine governor
setting or overspeed the engine.
Look for this symbol to point out
important safety precautions. It means
CAUTION!!! BECOME ALERT!!! YOUR
SAFETY IS INVOLVED.
CAUTION: Always disconnect spark
plug wire and place wire where it cannot
contact spark plug in order to prevent
accidental starting when setting up,
transporting, adjusting or making repairs.
WARNING: Battery posts, terminals and
related accessories contain lead and
lead compounds, chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm.
Wash hands after handling.
WARNING: Engine exhaust, some of its
constituents, and certain vehicle compo-
nents contain or emit chemicals known to
the State of California to cause cancer
and birth defects or other reproductive
harm.
CAUTION: Muffler and other engine
parts become extremely hot during
operation and remain hot after engine
has stopped. To avoid severe burns on
contact, stay away from these areas.
HOW TO SET UP YOUR LAWN
MOWER
TO UNFOLD HANDLE
IMPORTANT: Unfold handle carefully so
as not to pinch or damage control cables.
1. Raise lower handle section to
operating position and squeeze the
bottom ends of lower handle towards
each other until the pin in handle can
be inserted into one of the three
height adjustment holes.
2. Remove protective padding, raise
upper handle section into place on
lower handle and tighten both handle
knobs.
3. Remove any packing material from
around control bar.
Your handles may be adjusted for your
mowing comfort. Refer to Service and
Adjustments section of this manual.
25
MODEL NUMBER 12H802
TYPE NUMBER 2639-B1
BRIGGS & STRATTON
4-CYCLE ENGINE
KEY PART
NO. NO. DESCRIPTION
332 690662 Nut (Flywheel)
333 802574 Armature-Magneto
334 691061 Screw (Armature Magneto)
337 802592 Spark Plug
356 692390 Wire-Stop
358 497316 Engine Gasket Set
363 19069 Flywheel Puller
365 692524 Screw (Carburetor)
383 89838 Wrench-Spark Plug
404 690272 Washer (Governor Crank)
425 690670 Screw (Air Cleaner Cover)
443 692523 Screw (Air Cleaner Primer Base)
445 491588 Filter-Air Cleaner Cartridge
455 691219 Cup-Flywheel
456 692299 Plate-Pawl Friction
459 281505 Pawl-Ratchet
505 231082 Nut (Governor Control Lever)
523 495264 Dipstick
524 692296 • Seal-Dipstick Tube
525 495265 Tube-Dipstick
529 691923 Grommet
562 92613 Bolt (Governor Control Lever)
584 692342 Cover-Breather Passage
585 691879 • Gasket-Breather Passage
592 690800 Nut (Rewind Starter)
597 691696 Screw (Pawl Friction Plate)
601 95162 Clamp-Hose
608 497680 Starter-Rewind
613 691340 Screw (Muffler)
615 690340 Retainer-Governor Shaft
616 691306 Crank-Governor
617 270344 ؇Seal-O Ring (Intake Manifold)
621 692310 Switch-Stop
635 66538 Boot-Sparkplug
668 493823 • Spacer (Includes 2)
670 692294 Spacer-Fuel Tank
684 690345 Screw (Breather Passage Cover)
689 691855 Spring-Friction
KEY PART
NO. NO. DESCRIPTION
708 691321 ؇Seal-Throttle Shaft
741 691830 Gear-Timing
842 691031 • Seal-O Ring (Dipstick Tube)
847 692017 Assembly-Dipstick/Tube
851 493880 Terminal-Sparkplug
869 691155 Seat-Valve (Intake)
870 690380 Seat-Valve (Exhaust)
871 262001 Bushing-Guide (Exhaust)
63709 Bushing-Guide (Intake)
921 497233 Cover-Blower Housing
922 692135 Spring-Brake
923 695891 Brake
957 397974 Cap-Fuel Tank
966 496116 Base-Air Cleaner Primer
968 692298 Cover-Air Cleaner
969 690700 Screw (Blower Housing Cover)
970 691669 Screw (Air Cleaner Primer Bracket)
972 495224 Tank-Fuel
975 493640 Bowl-Float
976 496115 Primer-Carburetor
977 498261 Set-Carburetor Gasket
1019 494256 Kit-Label
1036 695111 Label-Emissions
1058 274265 Owner’s Manual
1059 692311 Kit-Screw/Washer
1095 498528 Set-Valve Gasket
1210 498144 Assembly-Pulley/Spring (Pulley)
1211 498144 Assembly-Pulley/Spring (Spring)
• Included in Engine Gasket Set, Key No. 358
Ø Included in Carburetor Overhaul Kit, Key No. 121
‡ Included in Carburetor Gasket Set, Key No. 977
+ Included in Valve Overhaul Kit, Key. No 1095
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
3
• Stop the blade(s) when crossing gravel
drives, walks, or roads.
• Stop the engine (motor) whenever you
leave the equipment, before cleaning
the mower or unclogging the chute.
• Shut the engine (motor) off and wait
until the blade comes to complete stop
before removing grass catcher.
• Mow only in daylight or good artificial
light.
• Do not operate the machine while
under the influence of alcohol or drugs.
• Never operate machine in wet grass.
Always be sure of your footing: keep a
firm hold on the handle and walk; never
run.
• Disengage the self-propelled mecha-
nism or drive clutch on mowers so
equipped before starting the engine
(motor).
• If the equipment should start to vibrate
abnormally, stop the engine (motor)
and check immediately for the cause.
Vibration is generally a warning of
trouble.
• Always wear safety goggles or safety
glasses with side shields when operat-
ing mower.
II. SLOPE OPERATION
Slopes are a major factor related to slip
and fall accidents which can result in
severe injury. All slopes require extra
caution. If you feel uneasy on a slope, do
not mow it.
• Mow across the face of slopes: never
up and down. Exercise extreme caution
when changing direction on slopes.
• Remove obstacles such as rocks, tree
limbs, etc.
• Watch for holes, ruts, or bumps. Tall
grass can hide obstacles.
DO NOT:
• Do not trim near drop-offs, ditches or
embankments. The operator could lose
footing or balance.
• Do not trim excessively steep slopes.
• Do not mow on wet grass. Reduced
footing could cause slipping.
III. CHILDREN
Tragic accidents can occur if the operator
is not alert to the presence of children.
Children are often attracted to the
machine and the mowing activity.
Never
assume that children will remain where
you last saw them.
• Keep children out of the trimming area
and under the watchful care of another
responsible adult.
• Be alert and turn machine off if children
enter the area.
• Before and while walking backwards,
look behind and
down
for small
children.
• Never allow children to operate the
machine.
• Use extra care when approaching
blind corners, shrubs, trees, or other
objects that may obscure vision.
IV. SERVICE
• Use extra care in handling gasoline
and other fuels. They are flammable
and vapors are explosive.
- Use only an approved container.
- Never remove gas cap or add fuel
with the engine running. Allow
engine to cool before refueling. Do
not smoke.
- Never refuel the machine indoors.
- Never store the machine or fuel
container inside where there is an
open flame, such as a water heater.
• Never run a machine inside a closed
area.
• Never make adjustments or repairs
with the engine (motor) running.
Disconnect the spark plug wire, and
keep the wire away from the plug to
prevent accidental starting.
• Keep nuts and bolts, especially blade
attachment bolts, tight and keep
equipment in good condition.
• Never tamper with safety devices.
Check their proper operation regularly.
• Keep machine free of grass, leaves, or
other debris build-up. Clean oil or fuel
spillage. Allow machine to cool before
storing.
• Stop and inspect the equipment if you
strike an object. Repair, if necessary,
before restarting.
• Never attempt to make wheel height
adjustments while the engine (motor) is
running.
• Grass catcher components are subject
to wear, damage, and deterioration,
which could expose moving parts or
allow objects to be thrown. Frequently
check components and replace with
manufacturer’s recommended parts,
when necessary.
26
SERVICE NOTES
2
Warranty ................................................. 2
Safety Rules ........................................ 2-4
Assembly ............................................. 4-5
Operation ............................................. 6-9
Maintenance Schedule ........................ 10
Maintenance .................................... 10-13
Product Specifications .......................... 11
Service and Adjustments ................. 13-14
Storage ............................................ 14-15
Troubleshooting .............................. 16-17
Repair Parts ..................................... 18-23
Parts Ordering ........................ Back Cover
SAFETY RULES
WARRANTY
TABLE OF CONTENTS
I. GENERAL OPERATION
• Read, understand, and follow all
instructions on the machine and in the
manual(s) before starting. Be thor-
oughly familiar with the controls and the
proper use of the machine before
starting.
• Do not put hands or feet near or under
rotating parts. Keep clear of the
discharge opening at all times.
• Only allow responsible individuals, who
are familiar with the instructions, to
operate the machine.
• Clear the area of objects such as rocks,
toys, wire, bones, sticks, etc., which
could be picked up and thrown by the
blade.
• Be sure the area is clear of other
people before mowing. Stop machine if
anyone enters the area.
• Do not operate the mower when
barefoot or wearing open sandals.
Always wear substantial foot wear.
• Do not pull mower backwards unless
absolutely necessary. Always look
down and behind before and while
moving backwards.
• Do not operate the mower without
proper guards, plates, grass catcher or
other safety protective devices in place.
• See manufacturer’s instructions for
proper operation and installation of
accessories. Only use accessories
approved by the manufacturer.
IMPORTANT: This cutting machine is capable of amputating hands and feet and
throwing objects. Failure to observe the following safety instructions could result in
serious injury or death.
LIMITED TWO YEAR WARRANTY ON CRAFTSMAN power mower
For Two years 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 Power Mower (Gas) will be ninety (90) days from date of purchase if used
for commercial or rental purposes.
This Warranty does NOT cover:
• Pre-delivery set-up.
• Expendable items which become worn during normal use, such as rotary mower
blades, blade adapters, belts, air cleaners and spark plug.
• Repairs necessary because of operator abuse or negligence, including bent
crankshafts and the failure to maintain the equipment according to the instructions
contained in the owner’s manual.
Warranty service is available by returning the Craftsman Power Mower 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
27
SERVICE NOTES
Model No.
944.360441
CAUTION:
Read and follow all
Safety Rules and Instructions
before operating this equipment
Owner’s Manual
6 HORSEPOWER
21"Multi-Cut
ROTARY LAWN MOWER
• Safety
• Assembly
• Operation
• Maintenance
• Repair Parts
Sears Canada, Inc., Toronto, Ontario M5B 2B8
The D.O.M. decal includes engine life specifications for the emissions-related useful life period of
your engine. This period relates to the emission compliance life as certified by EPA/CARB. To
find the life period specification for your engine, please match one of the following letters with the
letter printed on your D.O.M. decal: (C) 125 hours, (B) 250 hours, (A) 500 hours.
177188 02.14.01 BY Printed in U.S.A.
