Craftsman 917.377151 User manual

Owner's Manual
JCRAFTSMAWJ
6.0 HORSEPOWER
22" REAR DISCHARGE
POWER PROPELLED
ROTARY LAWN MOWER
Model No.
917.377151
•Safety
•Assembly
•Operation
•Maintenance
•Espa_ol
•Repair Parts
CAUTION:
Read and follow all
Safety Rules and Instructions
before operating this equipment
Sears, Roebuck and Co., Hoffman Estates, IL 60179
Visit our Craftsman website: www.sears.com/craftsman

Warranty ............................................... 2
Safety Rules ......................................... 2
Assembly .............................................. 5
Operation .............................................. 6
Maintenance Schedule ...................... 10
Maintenance ....................................... 10
Product Specifications ........................ 11
Service and Adjustments .................... 14
Storage ............................................... 16
Troubleshooting ............................... ,. 17
Repair Parts ........................................ 37
Parts Ordering ..................... Back Cover
LIMITED TWO YEAR WARRANTY ON CRAFTSMAN POWER MOWER
For two years from date of purchase, when this Craftsman Lawn Mower is maintained,
lubricated, and tuned up according to the operating and maintenance instructions in
the owner's manual, Sears will repair free of charge any defect in material or workman-
ship.
If this Craftsman Lawn Mower is used for commercial or rental purposes, this warranty
applies for only 90 days from the date of purchase.
This Warranty does not cover:
• 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 Center/Department in the United States. This warranty applies only
while this product is in use in the United States.
This Warranty gives you specific legal rights, and you may also have other rights which
vary from state to state.
SEARS, ROEBUCKAND CO., D/817 WA, HOFFMAN ESTATES, ILLINOIS 60179
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.
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 r_ot operate the mower with(?ut
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.
•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.
2

•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 amajor 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.
DO-
,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
che_k components and replace with
manufacturer's recommended parts,
when necessary.
• 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,
3

_Look for this symbol to point out
important safety precautions. It means
CAUTIONI!! BECOMEALERTH! YOUR
SAFETY IS INVOLVED.
WARNING: In order to prevent
accidental starting when setting up,
transporting, adjusting or making repairs,
always disconnect spark plug wire and
place wire where it cannot contact spark
plug.
_,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.
• I,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.
These accessories were available when this lawn mower was produced. They are not
shipped with your mower. They are also available at most Sears retail outlets and
service centers. Most Sears stores can also order repair parts for you, when you
provide the model number of your lawn mower. Some of these accessories may not
apply to your lawn mower.
LAWN MOWER PERFORMANCE
CLIPPING DEFLECTOR
FOR REAR DISCHARGE LAWN MOWERS
GRASS CATCHERS
FOR
REAR DISCHARGE
LAWN MOWERS
MULCHER KITS
GRASS CATCHERS
FOR
SIDE DISCHARGE
LAWN MOWERS
tF
STABILIZER
GAS CANS
LAWN MOWER MAINTENANCE
MUFFLERS AIR FILTERS
BELTS BLADES BLADE ADAPTERS WHEELS
SPARK PLUGS
ENGINE OIL
4

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 as-
sembled at the factory with the exception
of those parts left unassembled for
shipping purposes. All parts such as nuts,
washers, bolts, etc., necessary to com-
plete 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 thorougly for additional
loose parts.
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 handles until lower handle
section locks into place in mowing
position.
2. Remove protective padding, raise
upper handle section into place on
lower handle and tighten both handle
knobs.
3. Remove handle padding holding
operator presence control bar to
upper handle.
Your lawn mower handle can be adjusted
for your mowing comfort. Refer to "Adjust
Handle" in the Service and Adjustments
section of this manual.
Operator presence
control bar
Upper handle
Lift up
Mowing
position
Lower handle
TO INSTALL ATTACHMENTS
Your lawn mower was shipped ready to
be used as a mulcher. To convert to
bagging or discharging:
• Open rear door and remove mulcher
plug. Store mulcher plug in asafe
place.
•You can now install catcher or
optional clipping deflector.
•To return to mulching operation, install
mulcher plug into discharge opening
of mower.
_CAOTION: Do not run your lawn mower
without mulcher plug in place or ap-
proved clipping deflector or grass catcher
in place. Never attempt to operate the
lawn mower with the rear door removed
or propped open.
Mulcher plug
5

KNOW YOUR LAWN MOWER
READ THIS OWNER'S MANUALAND 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.
These symbols may appear on your lawn mower or in literature supplied with the
product. Learn and understand there meaning.
CAUTION ENGINE ENGINE FAST SLOW CHOKE FUEL OIL DANGER, KEEP HANDS
OR WARNING ON OFF AND FEET AWAY
Engine zone
control cable
Throttle Control
Operator presence control bar
Drive control lever
Starter handle
Grass catcher_
Mulcher plug
Handle knob
Engine oil
w/
dipstick
Housing
cover
Gasoline cap
Primer
IMPORTANT: This lawn mower is
shipped WITHOUT OIL OR GASOLINE in
the engine.
_Wheel adjuster
(on each wheel)
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 Commis-
sion. 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,
Primer - pumps additional fuel from the
carburetor to the cylinder for use when
starting a cold engine.
Starter handle -used for starting the
engine.
Drive control lever -used to engage
power-propelled forward motion of lawn
mower.
Mulcher plug - must be removed to
convert to bagging or discharging
operation.
Throttle Control - used for starting the
engine and allows you to select either
6fast or slow engine speed.

Theoperation 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 is controlled by a
throttle located on the side of the upper
handle. Fast position is for starting, normal
cutting, trimming and better grass bag-
ging. Slow position is for light cutting,
trimming and fuel economy.
Slow
Fast
ENGINE ZONE CONTROL
ACAUTION: 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
cimumstances 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 require-
ments. Be sure all wheels are in the
same setting.
NOTE: Adjuster is properly positioned when
plate tab inserts intohole in lever.Also, 9-
position adjusters (if so equipped) allow lever
to be positionedbetween the plate tabs.
Plate Tab
Lower Wheels for High Cutr--_._.AlgP
_(_ .,._ _ Lever
Raise Wheels for Low Cut
TO ATTACH GRASS CATCHER
1. Lift the rear door of the lawn mower
and place the grass catcher frame
side hooks onto the door pivot pins.
2. The grass catcher is secured to the
lawn mower housing when the rear
door is lowered onto the grass catcher
frame.
ACAUTION: Do not run your lawn
mower without clipping deflector or
approved grass catcher in place. Never
attempt to operate the lawn mower with
the rear door removed or propped open.
Rear door
Grass
catcher
handle
Pivot
pins frame hook
TO EMPTY GRASS CATCHER
1. Lift up on grass catcher using the
frame handle.
2. Remove grass catcher with clippings
from under lawn mower handle.
3. Empty clippings from bag using both
frame handle and bag handle.
NOTE: Do not drag the bag when
emptying; it will cause unnecessary wear.
7
Bac
handle
(Grass
catcher
frame
handle

DRIVE CONTROL
• Self-propelling is controlled by holding
the operator presence control bar down
to the handle and pushing the drive
control lever forward until it clicks; then
releasing the lever.
• Forward motion will stop when the
operator presence control bar is
released. To slop forward motion
without stopping engine, release the
operator presence control bar slightly
until the drive control disengages. Hold
operator presence control bar down
against handle to continue mowing
without self-propelling
• To keep drive control engaged when
turning corners, push down on handle
and lift front wheels off ground while
turning lawn mower.
Operator presence control bar Drive
_ control
To engage Drive control
drive control disengaged
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 dipstick 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.
Gasoline filler cap Engine oil cap
\
(Discard
debris plug
inside)
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. Move throttle control lever to fast
position.
3. Hold operator presence control bar
down to the handle and pull starter
handle quickly. Do not allow starter
rope to snap back.

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.
•When using a rear discharge lawn
mower in moist, heavy grass, clumps of
cut grass may not enter the grass
catcher. Reduce ground speed
(pushing speed) and/or run the lawn
mower over the area a second time.
• If a trail of clippings is left on the right
side of a rear discharge mower, mow in
a clockwise direction with asmall
overlap to collect the clippings on the
next pass.
•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.
MULCHING MOWING TIPS
IMPORTANT: For best performance,
keep mower housing free of built-up
grass and trash. See =Cleaning" in
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
conditions may require that an area be
mulched a second time to completely
hide the clippings. When doing a
second cut, mow across or perpendicu-
lar 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
9

A,NTENANO SO.EDOL
REGULAR SERVICE
Check for LooseFasteners II/li/
Clean/Inspect Grass Catcher
(If Equipped) I_ _ i_
MClean Lawn Mower
wO Clean Under Drive Cover
(Power-Propelled Mowers) lip
Check drive belt/pulleys
RE (Power-Propelled Mowers) II/
Check/Sharpen/Replace Blade I,#"3
Lubrication Chart I#rIf
Clean Battery/Recharge
(Electric Start Mowers) I/ I/'4
I:: Check Engine Oil Level I/
NChange Engine Oil _1,2
Gclean Air Filter Ill' 2
InspectMuffler
N Clean or Replace Spark Plug
Replace Air Filter Paper Cartridge I/2
1-Change more often when operating under a heavy load or in high ambient temperatures.
2-Service more olten when operating in didy or dusty conditions.
3 - Replace blades more elten when mowing in sandy soil.
4 - Charge 48 hours at end of season.
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,
clean or replace air filter element and
check blade for wear. A new spark plug
and clean/new air filter element assures
proper air-fuel mixture and helps 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 "LUBRICA-
TION CHART").
IMPORTANT: Do not oil or grease
plastic wheel bearings, viscous lubri-
cants 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.
LUBRICATION CHART
_) Wheel adjuster (_) Engine oil
door hinge
bracket mounting pin
(D Refer to maintenance "Engine"
section.
(_) Spray lubricant
10

PRODUCT SPECIFICATIONS
SERIAL NUMBER
DATE OF PURCHASE
GASOLINE CAPACITY/TYPE: 1.6 QUARTS
UNLEADED REGULAR
OILTYPE (API-SF-SJ): SAE 30 (ABOVE 32°F)
SAE 5W-30 (BELOW 32°F)
OIL CAPACITY: 20 OZS.
;PARK PLUG (GAP: .030") CHAMPION RJ19LM OR J19LM
VALVE CLEARANCE: INTAKE: .004 - .008
EXHAUST: .004 - .008
SOLID STATE IGNITION
AIR GAP: .0125 IN.
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 space
provided above,
LAWN MOWER
Always observe safety rules when
performing 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.
BLADECARE
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 condi-
tion 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. Ibs.
IMPORTANT: Blade bolt is grade 8 heat
treated.
TO SHARPEN BLADE
NOTE: We do not recommend sharpen-
ing bla_te - 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
11

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. Blade
adapter Crankshaft
Key keyway
Lockwasher
Crank
bolt _.
Hardened _ihng Blade adapter
washer edge
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 manufac-
turer approved replacement catcher.
Give the lawn mower model number
when ordering.
DRIVE WHEELS
Check front drive wheels each time
before you mow to be sure they move
freely.
The wheels not turning freely means
trash, grass cuttings, etc. are in the drive
wheel area and must be cleaned to free
drive wheels.
If necessary to clean the drive wheels,
check both front wheels.
1. Remove hubcaps, hairpin cotters and
washers.
2. Remove wheels from wheel adjusters.
3. Remove any trash or grass cuttings
from inside the dust cover, pinion and/
or drive wheel gear teeth.
4. Put wheels back in place.
NOTE: If after cleaning, the drive wheels
do not turn freely, contact your nearest
authorized service center.
GEAR CASE
•To keep your drive system working
properly, the gear case and area
around the drive should be kept clean
and free of trash build-up. Clean under
the drive cover twice a season.
•The gear case is filled with lubricant to
the proper level at the factory. The only
time the lubricant needs attention is if
service has been performed on the
gear case.
• If lubricant is required, use only Texaco
Starplex Premium 1 Grease, Part No.
750369. Do not substitute.
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.
SAE VISCOSITY GRAOES
.20=60_
:10°.1_" _0 20" 30'
TEMPERATURE RANGE ANTICIPATE D BEFORE NEXT OIL CHANGE
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°R 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
securety each time you check the oil
level.
12

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 on lawn mower
and on side of engine.
5. Fill engine with oil. (See "Add Oil" in
the Operacion section of this manual.)
6. Reconnect spark plug wire to spark
plug.
Container
AIR FILTER
Your engine will not run properly and may
be damaged by using a dirty air filter.
Replace the air filter every year, 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. Back
Slots
MUFFLER
Inspect and replace corroded muffler as it
could create a fire hazard and/or dam-
age.
SPARK PLUG
Change your spark plug each year to
make your engine start easier and run
better. Set spark plug gap at .030 inch,
CLEANING
IMPORTANT; For best performance,
keep mower housing free of built-up
grass and trash. Clean the underside of
your mower after each use.
[I, 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.
CLEAN UNDER DRIVE COVER
Clean under drive cover at least twice a
season. Scrape underside of cover with
putty knife or similar tool to remove any
build-up of trash or grass on underside of
drive cover.
c.
over
tabs 13

_,CAUTION: Before performing any
service or adjustments:
1. Release control bar and stop engine.
2. Make sure the blade and all moving
parts have completely stopped.
3. 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 mower, is provided to
minimize the possibility that objects will
be thrown out of the rear of the mower into
the operator mowing position. If the
deflector becomes damaged, it should be
replaced.
TO REMOVE/REPLACE DRIVE BELT
1. Remove drive cover. Remove belt
from gearcase pulley by pushing
down on pulley and rolling belt off it.
2. Turn lawn mower on its side with air
filter and carburetor up.
3. Remove blade.
4. Remove debris shield.
5. Remove belt from engine pulley on
crankshaft.
6. Install new belt by reversing above
steps.
7. Always use factory approved belt to
assure fit and long life.
TO ADJUST HANDLE
The handle can be mounted in a high or
low position. The mounting holes in the
bottom of lower handle are off center for
raising or lowering the handle.
1. Remove upper handle and all parts
attached to lower handle.
2. Remove hairpin cotters from lower
handle bracket mounting pin.
3. Squeeze lower handle in to remove it
from mounting pins.
4. Turn lower handle over to raise or
lower handle.
5. Squeeze lower handle in and position
holes onto mounting pins on handle
bracket.
6. Reassemble upper handle and all
parts removed from lower handle.
_Lower
handle
Drive Belt
cover Push
14

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.
_I, CAUTION: Do not run your lawn mower
without clipping deflector or approved
grass catcher in place. Never attempt to
operate the lawn mower with the rear
door removed or propped open.
Catcher ...._"-
frame
handle
Frame
opening
ENGINE
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 an
authorized service center for repair and
adjustment.
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 an authorized service
center for repair and/or adjustment.
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 autho-
rized service center, which has proper
equipment and experience to make any
necessary adjustments.
15

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. Squeeze the bottom ends of the lower
handle toward each other until the
lower handle clears the handle
bracket, then move handle forward.
2. Loosen upper handle mounting bolts
enough to allow upper handle to be
folded back.
IMPORTANT: When folding the handle
for storage or transportation, be sure to
fold the handle as shown or you may
damage the control cables.
•When setting up your handle from the
storage position, the lower handle will
automatically lock into the mowing
position. Lower
handle
Squeeze tofold Handle
bracket
Hairpin
cotter Upper
Operator presence control
\
Fold foward /_
for storage
Lower ._
handle_ _ :J_'_
bar..,,,/handle
_,.';/I Fold
i'_'/ I backward
Mowing
position
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 conden-
sation to form and will cause your unit
16 torust.

IMPORTANT: Never cover mower while
engone and exhaust .areas are still warm.
TROUBLESHOOTING CHART
PROBLEM CAUSE
Does not start 1, Dirty air filter.
2. Out of fuel.
3. Stale fuel.
Loss of power
Poor cut -
uneven
Excessive
vibration
Starter rope hard
to pull
A CAUTION:Never store the lawn mower
with gasoline in the tank inside abuilding
where fumes may reach an open flame or
spark. Allow the engine to cool before
storing in any enclosure.
4. Water in fuel.
5. Spare plug wire is 5.
disconnected.
6. Bad spark plug. 6.
7. Loose blade or broken 7.
blade adapter.
8. Control bar in released 8.
position.
9. Control bar defective. 9.
1. Rear of lawn mower 1.
housing or cutting blade
dragging in heavy grass.
2. Cutting too much grass. 2.
3. Dirty air filter. 3.
4. Buildup of grass, leaves, 4.
and trash under mower.
5. Too much oil in engine. 5.
6. Walking speed too fast. 6.
1. Worn, bent or loose blade. 1.
2. Wheel heights uneven. 2.
3. Buildup of grass, leaves 3.
and trash under mower.
1. Worn, bent or loose blade. 1.
2. Bent engine crankshaft. 2.
1. Engine flywheel brake is on 1.
when control bar is released.
2. Bent engine crankshaft. 2.
3. Blade adapter broken. 3.
4. Blade dragging in grass. 4.
CORRECTION
1. Clean/replace air filter.
2. Fill fuel tank.
3. Drain tank and refill with
fresh clean fuel.
4. Drain fuel tank and
carburetor and refill tank
with fresh gasoline.
Connect wire to plug.
Replace spark plug.
Tighten blade bolt or
replace blade adapter.
Depress control bar to
handle.
Replace control bar.
Set to "Higher Cut"
position.
Set to "Higher Cut"
position.
Clean/replace air filter.
Clean underside of mower
housing.
Check oil level.
Cut at slower walking
speed.
Replace blade. Tighten
blade bolt.
Set all wheels at same
height
Clean underside of
mower housing.
Replace blade. Tighten
blade bolt.
Contact an authorized
service center.
Depress control bar to
upper handle before
pulling starter rope.
Contact an authorized
service center.
Replace blade adapter.
Move lawn mower to cut
grass or to hard surface.
17

TROUBLESHOOTING CHART
PROBLEM CAUSE
Loss of drive 1. Drive wheels not turning
with drive control engaged.
2. Belt not driving
Grass catcher 1. Cutting height too low.
not filling (ifso 2. Lift on blade worn off.
equipped) 3. Catcher not venting air.
Hard to push 1, Grass is too high or wheel
height is too low.
2. Rear of lawn mower
housing or blade dragging
in grass,
3. Grass catcher too full.
4. Handle height position not
right for you.
CORRECTION
1. Adjust or replace drive
control cable.
2. Put belt on pulleys or
replace belts if broken.
1. Raise cutting height.
2. Replace blade.
3. Clean grass catcher.
1. Raise cutting height.
2. Raise rear of lawn mower
housing one (1) setting
higher.
3. Empty grass catcher.
4. Adjust handle height to
suit.
18

36

ROTARY LAWN MOWER -- MODEL NO. 917.377151
GEAR CASE ASSEMBLY PART NUMBER 702511
17
15
14
i
10
KEY PART
NO. NO.
1 17490416
2137055X004
3 137053
457072
6 48373
7 77881
8137051
9 137074
10 57079
DESCRIPTION
Tapping Screw 1/4-20 x 1-1/4
Engagement Bracket
Shifter
Seal
Gear Case Halves Kit
(Includes Key Nos. 4, and 7)
Bearing
WormShaft
Drive Shaft
HardenedWasher
KEY PART
NO. NO. DESCRIPTION
11 131484 ClutchYoke
12 700343 Bushing
13 86447 Plug
14 137050 HelicalGear
15 750436X ClutchJaw
16 750369 Grease
17 12000003 E-Ring
18 _50848 Hi-ProKey
19 81585X004 Spring Bracket
NOTE: Allcomponentdimensionsgiven inU.S.
inches. 1 inch = 25.4 mm
37