Craftsman 917.377960 User manual

Owner's Manual
CRAFTZMAIi°
6.75 HORSEPOWER
21" MULTI-CUT
POWER PROPELLED
ROTARY LAWN MOWER
Model No.
917.377960
• Safety
• Assembly
•Operation
•Maintenance
•EspaSol
•: Repair Parts
CAUTION:
Read and follow all
Safety Rules and Instructions
before operating this equipment
i
Se_rs, Roebuck and Co., Hoffman Estates, IL 60179
Visit'our Craftsman website: www.sears.com/craftsman

Warranty 2 Product Specifications 11
Safety Rules 2 Service and Adjustments 14
Assembly 4 Storage 14
Operation 6 Troubleshooting 16
Maintenance Schedule 10 Repair Parts 34
Maintenance 10 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 workmanship.
If this Craftsman Lawn Mower is used for commemial or rental purposes, this warranty
applies for only 90 days from the date of purchase.
This Warranty does notcover:.
•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 crank-
shafts and the failure to maintain the equipment according to the instructions con-
tained in the owner's manual.
Warranty service is available by retuming 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, ROEBUCK AND CO., D/817 WA, HOFFMAN ESTATES, ILLINOIS 60179
Safety standards require operator pres-
ence controls to minimize the dsk of injury.
Your unit isequipped with such controls.
Do not attempt to defeat the function ofthe
operator presence controlsunder any
circumstances.
TRAINING:
•Read thisoperator'smanualcarefully.
Becomefamiliarwiththe controlsandknow
howto operateyourmower properly.Leam
howtoquicklystopmower.
•Do notallowchildrentouseyourmower.
Never allow adultsto usemowerwithout
properinstrucUons.
•Keep the area ofoperationclearofall
persons,especiallysmallchildren and pets.
•Use moweronlyas the manufacturer
intendedand asdescribedinthis manual.
•Do notoperate mowerif ithasbeen
droppedor damagedinany manner.
Alwayshave damage repairedbefore using
yourmower.
• DOnotuseaccesso_ attachmentsthatare
notrecommendedbythe manufacturer.
Useofsuchattachmentsmay be hazard-
OUS.
•The bladeturnswhen the engine is running.
PREPARATION:
•Alwaysthoroughlycheckthe area tobe
mowedand clearitofall stones, sticks,
wires,bones,and otherforeignol_jects.
These objectswillbe thrown by the blade
and cancause severe injury.
•Alwayswear safetyglassesor eye shields
when startingand while usingyourmower.
•Dressproperly. DOnot operate mower
when barefootor wearingopen sandals.
Wear onlysolidshoeswithgoodtraction
when mowing.
2

• Check fuel tank before starting engine. Do
not fillgas tank indoors, when the er_jine is
running or when the engine is hoL Allow the
engine to cool for several minutes before
filling the gas tank. Clean off any spilled
gasoline before starting the engine.
•Always make wheel height adjustments
before starting your mower. Never attempt
to do this while the engine is running.
•Mow only in daylight or good artificiallight.
OPERATION:
•Keepyoureyes andmindonyourmower
and thearea beingcut. Do notletother
interestsdistractyou.
•Do notmowwet or src)perygrass. Never
runwhileoperatingyourmower. Alwayshe
sureofyourfooting- keep a firmholdon the
handlesandwaJk.
• Do notputhandsorfeet near or under
rotatingparts. Ksep dear ofthe dmcharge
openingat alltimes.
•Alwaysstopthe enginewhenever you leave
or are notusing yourmower,or before
crossingdriveways,walks, roads,and any
gravel-coveredareas.
•Neverdirectd'mchargeof materialtoward
bystandersnorallow anyone nearthe
mower while you are operatingit.
•Beforecleaning,inspecting,or repairing
yourmower,stopthe engine andmake
absolutelysure the blade and allmoving
partshavestopped. Then d'_connectthe
sparkplugwireand keep itaway fromthe
sparkplugtopreventaccidentalstarting.
• DOnotcontinueto runyourmowerifyouhit
a foreignobjecL Followthe procedure
outlinedabove,then repairanydamage
hefore restartingand operatingyourmower.
•Donotchangethe governorsettingsor
overspeedthe engine. Enginedamage or
personalinjurymay resulL
• DOnotoperateyourmowerifitvibrates
abnormally, Excessivevibrationisan
indicationofdamage; stop the engine,
safelycheckforthe causeofvibrationand
repairas required.
•DOnot runthe engineindoors.Exhaust
fumesare dangerous.
•Never cut grass by pulling the mower
towards you. Mow asross the face of
slopes, never up and down or you might
lose your footing. DOnot mow excessively
steepslopes.Use caution when opa_
the mower on uneven terrain or when
changing directions - maintain good footing.
•Never operate your mower without proper
guards, plates, grass catcher or other safety
devices in place.
MAINTENANCE AND STORAGE:
•Check _blade and the engine mounting
boltsoftentobesuretheyaretightened
propedy.
• Check all bolts, nuts and screws at frequent
intervals for proper lightness to be sure
mower is in safe working condition.
•KsepaJsafetydev_es_plecaand
woddng.
•To reducefirehazard,keeptheanginefrse
of grass, leaves or excessive grease and Oil.
•Check grass catcher often for deterioration
andwearandreplacawornbags.Useody
replacementbegsthat arerecommended
byandcomptyw_ spedr_Uonsofthe
manufacturer of your mower.
•Always keep a sharp blade on your mower.
•Allow engine to cool before storing in any
enclosure.
•Never store mower with fuel in the tank
inside a building where fumes may reach an
open tiame or an ignitionsource such as a
hot water heater, space heater, clothes
dryer, etc.
Look forthis symbol to point out important
safety precautions. It means CAUTION!II
BECOME ALERTff! 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: The engine exhaust from this
product contains chemicals known to the
State of California to cause cancer, birth
defects, or other reproductive harm.
3

accessorieswereavailablewhenthislawnmowerwasproduced.Theyarenot
shippedwithyour mower.TheyarealsoavailableatmostSearsretailoutletsandservice
centers.MostSears storescan alsoorderrepairpartsfor you,when youprovidethe model
numberofyourlawn mower. Some ofthese accessoriesmay notapplytoyourlawn mower.
LAWN MOWER PERFORMANCE
CUPPING DEFLECTOR
FOR REAR DISCHARGE LAWN MOWERS
GRASS CATCHERS
FOR
REAR DISCHARGE
LAWN MOWERS
LAWN MOWER MAINTENANCE
MULCNER K_S
GRASS CATCHERS
FOR
I_ SlOE DISCHARGE
LAWN MOWERS
MUFFLERS AIR FILTERS
STABlUZER
GAS CANS
SPARK PLUGS
ENGINE OIL
Read these instructionsand 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 pads left unassembled for
shipping purposes. 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.
All parts such as nuts, washers, bolts, etc.,
necessary to complete the assembly have
been placed in the parts bag.
TO REMOVE LAWN MOWER FROM
CARTON
• Remove loose parts included with
mower.
•Cut down two end corners of carton and
lay end panel down flat.
• Remove all packing materials except
padding between upper and lower
handle and padding holding operator
presence control bar to upper handle.
•Roll lawn mower out of carton and check
carton thoroughly for additional loose
pads.
HOW TO SET UP YOUR LAWN
MOWER
TO UNFOLD HANDLE
IMPORTANT: Unfold handle carefully so
as not to pinch or damage control cables.
•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.
•Remove protective padding, raise upper
handle section into place on lower
handle and tighten both handle knobs.
•Remove any packing material from
around control bar.
4

• Yourhandlesmaybeadjustedforyour
mowingcomfort. Referto Serviceand
Adjustmentssectionofthismanual.
Operator presence
control bar Lift up
Lift up
TO INSTALL ATTACHMENTS
Your lawn mower was shipped ready to be
used as a mulcher. To convert to bagging
or discharging; See OPERATION section
of this manual.
Lower
handle
Mowing
position
3-position
Handle
adjustment
bracket
Handle
pin
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 their meaning.
CAUTION ENGINE ENGINE FAST SLOW CHOKE FUEL OIL DANGER, KEEP HANDS
OR WARNING (_, OFF AND FEET AWAY
Drive Operator presence control
Speed controllever
Starter handk Cable clip
Grass catcher
Wheel adjuster
lever
Engine oilcap w/dipstick
Mulcher
plug Gasoline cap
Mulcher door
IMPORTANT: This lawn mower is shipped
without oil or gasoline in the en_line. Housing
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 -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 bar - used to engage
power-propelled foward motion of lawn
mower.
Mulcher plug -Located at the rear
discharge opening must be removed when
converting to bagging operation.
6

The operationofany lawnmowercan resultin
foreign objectsthrownintothe eyes, whichcan
resultinsevere eye damage. Alwayswear
safetyglassesor eye shieldswhileoperating
yourlawn moweror performinganyadjust-
meritsor repairs. We recommenda wide
visionsafetymask overthe spectaclesor
standardsafety glasses.
HOW TO USE YOUR LAWN MOWER
ENGINE SPEED
The enginespeed was setat the factoryfor
optimumperformance. Speed isnotadjust-
able.
ENGINE ZONE CONTROL
CAUTION: Federalregulationsrequirean
enginecontreltobe installedonthis lawn
mowerinorderto m'mirnizethe riskofblade
contactinjury.Do notunderanycircumstances
attempttodefeatthe funcUonof the operator
contrel.The bladeturnswhenthe engineis
running.
•Yourlawn mowerisequippedwi_ an
operatorpresencecontrolbar which
requiresthe operatortobe pos_
behind the lawnmowerhandletostartand
operatethe lawn mower.
TO ADJUST cUTrlNG HEIGHT
•Allfourwheels are adjustedby a single
lever.
•Pulladjusterlevertowardwheel.To raise
mower, moveleverforwardtodesired
position.To lowermower,move the lever
towardthe rear.
Lower Wheels for high cut
Raise Wheels for low cut
GROUND DRIVE SPEEDS
Your lawn mower provides multiple speeds
to let you select the speed that suits you
best.
•Lower speeds are for slow, heavy/thick
grass cutting or trimming.
•Medium speeds are for normal grass
cutting or trimming.
•High isfor lightcutting and for ground
transport.
NOTE: Do not move speed control lever
unless the engine is running
TO OPERATE DRIVE SYSTEM
•With engine running, select ground
speed by moving speed control lever to
desired position.
•To start forward motion, pull drive
control bar back against handle.
•To stop forward motion, release drive
control bar.
IMPORTANT: Always keep drive control
bar fully engaged against handle when in
use.
Speed control_ "
lever ; ..
Drive control
engaged
Operatorpresence
control bar
Ddve control
disengaged
TO CONVERT MOWER
Yourlawnmowerwasshippedreadytobe
usedasamulcher.Toconvedtobaggingor
discharging:
REAR BAGGING-
•Open reardoorand removemulcherplug.
Storemulcharplugina safe place.
•You can now installgrasscatcher.
•Toconverttomulchingorcr_t_ging
operation,installmulcherplugintorear
dischargeopeningofmower.
SIDE DISCHARGING-
•Mulcherplug mustbe installedintorear
dischargeopeningof mower (see above
instructions).
•Open mulcherdoor and installdischarge
deflector underguardas shown.
•Mower isnow readyfor discharging
operation.
•To convertto mulchingor baggingopera-
tion,dischargedeflectormustbe removed
and mulcherdoormust be closed.
7

SIMPLE STEPS TO REMEMBER
WHEN CONVERTING YOUR LAWN
MOWER
FOR MULCHING -
• Rear mulcherplug installed.
•Mulcherdoorclosed.
FOR REAR BAGGING -
•Rear mulcher plug removed.
•Grass catcher installed.
•Mulcher door dosed.
FOR SIDE DISCHARGING -
•Rearmulcherplug installed.
•Sidedischargedeflectorinstalled.
CAUTION: Do net runyourlawn mower
withoutrearmulcherplug in placeor approved
grasscatcherinplace.
Never attempttooperatethe lawn mower with
the reardoorremovedorproppedopen.
CAUTION: Do net run your lawn mower
without rear mulcher plug or approved grass
catcher in place. Never attempt to operate the
lawn mower with the rear door removed or
propped open.
door
slots Grass
handle
hook
TO EMPTY GRASS CATCHER
•Lift up on gress catcher using the frame
handle.
•Remove grass catcher with clippings from
under lawn mower handle.
•Empty clippingsfrom beg using both frame
handle end bag handle.
NOTE: DO net drag the beg when emptying;
itwill cause unnecessary wear.
Mulcher plug
BEFORE STARTING ENGINE
OIL
Mulcher door
Open
mulcher door
Discharge deflector
TO ATTACH GRASS CATCHER
•Liftthe rear door.of the lawn mower and
place the grass catcher frame hooks intothe
slots of the rear door.
•The grass catcher issecured to the lawn
mower housing when the rear door is
lowered onto the grass catcher frame.
Your lawn mower is shipped without oilin the
engine.
•Be sure mower is level and area around oil
fillis dean.
• Remove engine oil cap and tillto _full line
onthedips_,k.
NOTE: Allow oil to settle down into engine
for accuratedipstickreading.
•Engine holds 27 ozs. of oil. For type and
grade of offto use, see "ENGINE' in
Maintenance section of this manual.
•Pour oil slowly. Do not over till.
•Check oillevel before each use. Add oil if
needed. RII to full line on dipstick.
•To read proper level, tighten engine oilcap
each time.
• Reinstall engine oil cap end lighten.
•Chenge the oil after every 25 hours of
operation or each season. You may need
to change the oil more often under dusty,
dirtyconditions.
GAS
•Fillfuel tank. Use fresh, clean, regular
unleaded gasoline with a minimum lof 87
8

octane. (Use of leaded gasoline will
increase carbon and load oxide deposits
and reduce valve I'Ve). Do not mix oil with
gasoline. 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 loads
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 addlti_, information.
Never use engine or carburetor cleaner
products in the fuel tank or permanent
damage may occur.
Gasoline
filler cap
TO START ENGINE
• 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.
•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, release operator
presence control bar.
NOTE: In cooler weather it may be
necessary to repeat pdmingsteps. In
warmer weather over priming may cause
flooding and engine willnot start. Ifyou do
flood engine, wait a few minutes before
attempting to start and do not repeat
priming steps.
MOWING TIPS
•Formostcuttingconditionsand better
baggingperformance,the enginespeed
shouldbe set inthe fast position.
•Undercertainconditions,suchas when
mowingverytallgrass,raisethe mower
heightonthe firstcutto reducepushing
effort,to avoidoverheatingthe engine,and
toavoidleavingclumpsofgrass clippings.
Make the second cut to the desired height.
For extremely heaw cutting, reduce the
width ofcut.
Pores in cloth grass catchers can become
filledwith dirtand dust with use and the
catcher willcollect less grass. To prevent
this, regularly hose catcher off with water
and lot dry before use.
MULCHING MOWING TIPS
IMPORTANT: Forbestperfo_, keep
mowerhousingfreeof built-upgrassand
trash.See "Cleaning"in MAINTENANCE
sectionofthis manual.
• The specialmulchingbladewillrecurthe
grassclippingsmanytimes and reduce
theminsize sothatas they fallontothe
lawnthey willdisperseintothe grassand
notbe noticed.Also,the mulchedgrasswill
biodegrade quicklyto providenutrients for
the lawn. Alwaysmulchwithyourhighest
engine(blade)speedas this willprovidethe
bestrecuttingactionofthe blades.
•Avoidcuttingyourlawnwhen itisweL Wet
grasstendstoform clumpsand interferes
withthe mulchingaction. The besttime to
mowyourlawnis the earlyaftemnon. At
this time the grasshas driedand the newly
cut areawillnot be exposedtothe direct
sun.
•Forbestresults,adjustthe lawn mower
cuttingheightso thatthe lawnmower cuts
offonlythetopone-thirdofthe grassblades.
Ifthe lawnisovergrownitwillbe necessary
to raisetheheightof cutto reducepushing
effortandtokeep from overloadingthe
engineand leavingdumps ofmulched
grass.Forextremelyheavymulching,
reduceyourwidthofcutbyoverlapping
previouslycutpathand mowslowly.
•Certaintypesofgrassand grassconditions
may requirethatan area be mulcheda
secondtimetocompletelyhidethe
clippings.When doinga secondcut,mow
acrossorpeqoendloulartothe firstcut path.
•Change your cuttingpatternfrom week to
week. Mow north tosouth oneweek than
changetoeastto westthe nextweek. This
will helppreventmattingand grainingofthe
lawn.

MAINTENANCESCHEDULE
FILL IN DATES
AS YOU COMPLETE
REGULAR SERVICE
Checkfor LooseFasteners !_' t/
Clean/InspectGrass Catcher
(IfEquipped) _/ _
M Clean Lawn Mower
Clean Under Drive Cover
{Power-PropelledMowers)
W Check drive belt/puUeys
(Power-PropelledMowers) If
RCheck/ShaqoeniReplaceBlade I/3
LubdcationChart II_ I_
Clean Battery/Recharge
_l=!m'tricStart Mowers1 II_ I_4
E Check En_lineOilLevel €_1
Change EngineOil a
GI Clean Air Filter
InspectMuffler
N Clean or Replace Spark Plug
ReplaceAir FilterPaper Cartridge =
I-Ch_,ge more often when operating under a heavy load or in high ambient temperatures.
SERVICE DATES
2-Sefvlce more ol_enwhen operating Indirty or dusty condi_ns.
3 - Replace blades more often when mowing in sandy soil.
4 - Charge 48 hours at end of season,
GENERAL RECOMMENDATIONS
The warranty on this lawn mower does not
coveritemsthathavebeensubjectedto
operator abuse or negligence. To receive full
value from _ wananty, operator must
maintain mower as instructed in this manual.
Some adjustments will need to be made
pedodicagy to properly maintain your unit.
All aGrjustrnentsin the Service end Adjjust-
ments section ofthis manual should be
checked at least once each season.
•Once a year, replace the spark plug,
replace air filterelement and check blade for
wear. A new spark plug and cleaR/new air
fiitsrelement assures proper air-fuel mixture
and hellOSyour engine run better and last
longer.
•Follow the maintenance schedule in this
manual.
BEFORE EACH USE
• Check engineoillevel.
•Checkforloosefasteners.
LUBRICATION
Keep unitwell lubricated(See "LUBRICATION
CHART").
LUBRICATION CHART
(_ Wheel
\
(_ Drive pins
I adjuster
\(_ Engine oil
(_) Spray lubricant
(_) Refer to MAINTENANCE
"ENGINE" section.
IMPORTANT: Do net oilor grease plastic
wheel bearings. Viscous lubricants will
attract dust and dirt that will shorten the
life of the self lubricating bearings. Ifyou
feel they must be lubricated, use only a
dry, powdered graphite type lubricant
sparingly."
10

=RODUCT SPECIFICATIONS
MODEL NUMBER 917.377960
SERIAL NUMBER
)ATE OF PURCHASE
HORSEPOWER:
GASOLINE CAPACITY/TYPE:
OIL TYPE (API-SF/SG/SH):
6.75
1.5 QUARTS
UNLEADED REGULAR
SAE 30 (ABOVE 32°F)
SAE 5W-30 (BELOW 32°F)
OIL CAPACITY: 27 OZS.
SPARK PLUG(GAP: .030") CHAMPION RJ19LM or J19LM
VALVE CLEARANCE: INTAKE: .004 - .008
EXHAUST: .004 - .008
;OLID 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 •Remove blade and attaching hardware
(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.
Always obsewe safety rules when performing
any maintenance.
TIRES
•Keep tiresfree ofgasoline,oil,or insect
controlchemicalswhich canharm robber.
•Avoidstumps,stones,deep ruts,sharp
objectsandotherhazardsthat may cause
tiredamage.
BLADE CARE
For best results, mower blade must be
kept sharp. Replace bent or damaged
blades.
TO REMOVE BLADE
•Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
•Turn lawn mower on itsside. Make sure
air filter and carburetor are up.
•Use a wood block between blade and
mower housing to prevent blade from
turning when removing blade bolt.
•Protect your hands with gloves and/or
wrap blade with heavy cloth.
•Remove blade bolt by turningcounter-
clockwise.
TO REPLACE BLADE
•Posit:Ion the blade adapter on the engine
crankshaft. Be sure key in adapter and
crankshaft keyway are aligned.
•Position blade on the blade adapter
aligning the two (2) holes in the blade
with the raised lugs on the adapter.
•Be sure the trailing edge of blade
(opposite sharp edge) is up toward the
engine.
•Install the blade bolt with the lock
washer and hardened washer into blade
adapter and crankshaft.
•Use block of wood between blade and
lawn mower housing and tighten the
bladebolt, turning clockwise.
•The recommended tightening torque is
35-40 ft. Ibs.
IMPORTANT: BLADE BOLT IS GRADE 8
HEAT TREATED.
11

SHARPENBLADE
_TE: We do not recommend sharpening
de - but if you do, be sure the blade is
anced.
re should be taken to keep the blade
anced. An unbalanced blade will cause
mtual damage to lawn mower or
line.
"he blade can be sharpened with a file
)r on a grinding wheel. Do not attempt
o sharpen while on the mower.
"o chock blade balance, drive a nail into
Ibeam or wall. Leave about one inch of
he straight nail exposed. Place center
lole of blade over the head of the nail.
fblade is balanced, it should remain in
thodzontal position. If either end of the
)lade moves downward, sharpen the
)eavy end until the blade is balanced.
Blade Crank-
shaft
keyway
Blade
.de
,\
•If you remove the drive pinions, wipe
clean with dry cloth. Reassemble dry.
Do not lubricate. Do not use oil or
grease.
•The pinion gear, on both sides of the
mower, are the same, however, they
must be installed correctly. If installed
incorrectly, the drive system will not
work.
•There are arrows embossed on both
sides of the pinion gear. With the arrow
at the top of the pinion, the arrow must
pointtowards front of mower. If the
arrow points to the rear, turn the pinion
around and assemble to mower.
•Place wheels back on adjuster axles.
•Replace Iocknuts and hubcaps.
Correct
Pinion
Locknut
sher Crank-
Hardened Trailing shaft
washer edge adaptor
]ASS CATCHER
The grass catcher may be hosed with
Nater, but must be dry when used,
Check your grass catcher often for
damage or detedoration. Through
normal use itwill wear. If catcher needs
replacing, replace only with a manufac:
lurerapproved replacement catcher.
Give the lawn mower model number
when ordering.
:lIVE WHEELS
lock rear drive wheels each time you
_w to be sure they move freely. The
1eels not turning freely means trash,
asscuttings, etc., may be inside the
ive wheel and dust cover area and must
Jcleaned outto free drive wheels.
necessary to clean the drive wheels,
_ockboth rear wheels.
Dustcover
Washer
Hubcap
ENGINE
LUBRICATION
Useonlyhighqualitydetergentoilratedwith
API serviceclassificationSF, SG orSH.
Selectthe oil'sSAE viscositygrade according
to yourexpectedoperatingtemperature.
SAE VISCOSITY GRADES
-2O"
40" "20" -IO' 0" 20" 30"
T_MFIERATURE RANGE ANTK_PATED BEFORE NEXT OfL CHANGE
NOTE: Althoughmulti-viscosityoils(5W30,
10W30 etc.) improvestartingincoldweather,
thesemulti-viscosityoilswillresultin increased
oilconsumption when usedabove 32°F.
Check yourengine oillevel more frequent_ to
avoid possible engine damage from running
Remove hubcaps and Iocknuts. :low on o
Remove wheel_ from wheel adjuster _ Change the o after every 25 hours of
axles. _ operation or at least once a year if the lawn
Remove any trash or grass cuttings froth mower ls net used for 25 hours in one year.
inside the dust cover, pinion and/or dd_,e
wheel gear teeth. ! 12

Check the crankcase oil level before starting
the engine and after each fk,e (5) hours of
continuous use. Ttghten o'dplug securely each
time you check the oil level.
TO CHANGE ENGINE OIL
NOTE: Before tipping lawn mower to drain oil,
drain fuel tank by running engine until fuel tank
isempty.
•Disconnect spark plug wire from spark plug
and place wire where it cannot come in
contact with spark plug.
•Remove engine oilcap; lay aside on a clean
surface.
•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.
•Wipe off any spilled oilon lawn mower and
onsideofengine.
•Fillengine with oil. Fillonly tothe =FULL"
line on the d'_ostk:k.DO NOT OVER FILL
•Replace engine oilcap.
• 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 fitter every year, more
often if you mow in very dusty, dirty
conditions. Do not wash air filter.
TO CHANGE AIR FILTER
•Loosen cover knob.
•Swing cover down and remove from
hinge.
•Pull paper filter out of air cleaner body.
•Clean air cleaner cover and body.
• install a new paper fitter.
•Reinstall cover to air cleaner body. Be
sure hinge is assembled properly.
•Swing cover up and tighten cover knob.
(Do not overtighten).
Airfilter cover
Cover knob
Hinge
Paper filter
MUFFLER
Inspectand replacecorroded muffler as it
could createafirehazardand]or damage.
SPARK PLUG
Change yoursparkplug each yeartomake
yourenginestarteasierand runbetter. Set
sparkpluggap at .030 inch.
CLEANING
IMPORTAN'£: For best performance, keep
mower housing free of built-up grass and trash.
Clean underside of mower housing after each
use.
CAUTION: Disconnect spark plug wire from
sparkplugand place wire where itcannot
come incontactwiththesparkplug.
•Clean the underside ofyour lawn mower
by scraping to remove build-upofgrass
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.
13

CAUTION: BEFORE PERFORMING ANY
SERVICE OR ADJUSTMENTS:
•Release controlbar.
•Make surethe bladeand all moving
parts have completelystopped.
•Disconnectsparkplugwirefrom
sparkplugand placewhere itcannot
comeincontactwithplug.
LAWN MOWER
TO ADJUST CU'I'rlNG HEIGHT
See 'TO ADJUST CUTI'ING HEIGHT" inthe
Operationsectionofthismanual.
REAR DEFLECTOR
The reardeflector,attachedbetweenthe rear
wheeisofyourlawn mower,isprovidedto
minimizethe possibilitythatobjectswillbe
thrownoutthe rearof the lawnmowerintothe
operator'smowingposition.Ifthe rear
deflector becomesdamaged, itshouldbe
replaced.
TO ADJUST HANDLE
The handieonyourlawn mowerhasthree (3)
height pesitions -adjusttoheightthatsuits
yOU.
•Squeezethe bottomends oflowerhandle
towardseachotheruntilthe pinin handle
can be insertedintoone ofthe three height
adjustmenthofes.
Hi
Med.-
Low
Handle pin
J3-position
Handle
adjustment
bracket
ENGINE
ENGINE SPEED
Yourengine speedhasbeen factory set. Do
not attempttoincreaseenginespeed or it
may resultinpersonalinjury.Ifyou believe
that the engineis runningtoofast ortooslow,
take yourlawnmowerto an authorized
servicecenter/departmentforrepairand
adjustment.
CARBURETOR
Yourcarburetor has a non-adjustablefixed
mainjetformixturecontrol. Ifyourengine
doesnotoperate properlydue tosuspected
carburetor problems,take yourlawn mowarto
an authorizedservice center/department for
repairand adjustment.
IMPORTANT: Never tamper withthe engine
governor,whichisfactory setfor properengine
speed. Overspeecingthe engineabove the
factoryhighspeedsettingcan be dangerous.
it youthink the engine-governedhighspeed
needs adjusting,contactyournearest
AUTHORIZED servicecenter,whichhas
properequipmentand experiencetomake
any neceesarya_stments.
14

Immediatelyprepareyourlawnmowerfor
storageattheendoftheseasonoriftheunit
willnotbeusedfor 30 days or more.
LAWN MOWER
When lawn mower isto be stored for a period
of time, clean itthoroughly, remove all dirt,
grease, leaves, etc. Store in a dean, dry area.
•Clean entire lawn mower (See "CLEANING"
in the Maintenance section of this manual).
•Lubricate as shown in the Maintenance
section of this manual.
•Be sure that all nuts, bolts, screws, and pins
are securely fastened. Inspect moving
parts for damage, breakage end wear.
Replace ifnecessary.
•Touch up all rusted or chipped paint
surfaces; sand lightlybefore painting.
HANDLE
•You can fold your lawn mower handle for
storage.
•Loosen the two (2) handle knobs on sides of
the upper handle and allow handle to fold
down to the rear.
•Squeeze the bottom ends of lower handle
toward each other untilpins in handle clear
the brackets and pivot entire handle
assembly forward and allow itto rest on
mower.
• When setting up your handle from the
storageposition,the lower handle will
require manually locking intothe mowing
position.
IMPORTANT: When folding the handle for
storage or trar_tion be sure to fold the
handle as shown oryou may damage the
control cables.
Operator presence
controlbar
Upper handle
Lower position
handle
ENGINE
FUEL SYSTEM
IMPORTANT: Itisimportanttopreventgum
depositsfromforminginessentialfuelsystem
partssuchas carburetor,fuelfilter,fuelhose,
ortankduringstorage.Also,experience
indicatesthat alcoholblendedfuels(called
gasoholor usingethanolor methanol) can
attractmoisturewhichleadstoseparationand
formation of acidsduring storage.Acidicgas
candamage the fuel systemofan engine
whileinstorage.
•Drainthe fueltank.
•Stadthe engineand letitrun untilthefuel
linesand carburetorare empty.
•Neveruse engineor carburetorcleaner
productsinthefueltank or permanent
damage may occur.
•Usefreshfuelnextseason.
NOTE: Fuelstabilizerisan acceptable
alternativein minimizingthe formation offuel
gumdepositsduring storage. Addstabilizerto
gasolineinfueltankorstoragecontainer.
Alwaysfollow the mixratiofoundon stabilizer
container. Runengineat least 10 minutes
afteraddingstabilizerto allow the stabilizerto
reachthecarburetor. Do notdrainthe gas
tankand carburetor ifusingfuel stabilizer.
ENGINE OIL
Drainoil (withenginewarm) and replacewith
cleanengineoil. (See "ENGINE" inthe
Maintenancesectionofthis manual).
CYUNDER
•Remove sparkplug.
• Pourone ounce(29 mi) ofoil through spark
plugholeintocylinder.
•Pullstaderhandle slowlya few times to
distributeoil.
•Replacewithnewsparkplug.
OTHER
•Do notstore gasolinefrom one seasonto
another.
• Replace yourgasoline can ifyourcan starts
torusL Rustend/or dirtinyourgasoline will
cause problems.
•Ifpossible,storeyourunitindoorsand cover
ittogiveprotectionfromdustand dirL
•Coveryour unitwitha suitableprotective
coverthatdoesnot retainmoisture. Do not
useplastic. Plasticcannotbreathe which
allows condensationtoform andwillcause
your unit to rust.
15

IMPORTANT: Nevercovermowerwhile
engine andexhaustareas are stillwarm. 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.
TROUBLESHOOTING CHART
PROBLEM CORRECTION
Will not start
Loss of power
Poor cut
- uneven
CAUSE
Dirtyair filter.
Out of fuel.
Stale fuel.
Water in fuel.
Spark plug wire is disconnected.
Bad spark plug.
Loose blade or broken blade
adapter.
Control bar in released position
Control bar defective
1.
2.
3.
4.
5.
6.
7.
8.
9.
1. Rear of lawn mower
housing/blade dragging
in heavy grass.
2. Cutting too much grass.
3. Dirty air filter.
4. Buildupof grass, leaves
and trash under mower.
5. Too much oil in engine.
6. Walking speed too fast.
1. Worn, bent or loose blade.
2. Low engine speed.
1,
2.
3.
4.
5.
6.
7.
8.
9.
1.
Clean/replace air filter.
Fill fuel tank.
Drain tank and refillwith fresh
clean fuel.
Drain fuel tank and carburetor
and refilltank with fresh gasoline.
Connect wire to plug.
Replace spark plug.
Tighten blade boltor replace blade
adapter.
Depress controlbar to handle.
Engine flywheel brake is
on when control bar is released.
Bent engine crankshaft
Replace control bar.
Set in "Higher Cut"position.
2. Set in "Higher Cut" position.
3. Clean/replace air filter.
4. Clean underside of mower housing
5. Check oillevel.
6. Cut at slower walking speed.
.
2.
!3. Buildupof grass, leaves, and 3.
trash under mower.
Excessive 1. Worn, bent or loose blade. 1. Replace blade. Tighten blade bolt.
vibration 2. Bent engine crankshaft. 2. Contact an authorized service
center/departmant.
iStarter rope
hard to pull
Blade adapter broken.
Blade dragging in grass.
1,
2.
3.
4.
Replace blade. Tighten blade bolt.
Set engine speed control in fast
position.
Clean underside of mower housing
1. Depress control bar to upper
handle before pullingstarter rope.
2. Contact an authorized service
centerldepartment.
3. Replace blade adapter.
4. Move lawn mower tocut grass or
to hard surface to start engine.
16

TROUBLESH( OTING CHART
PROBLEM CAUSE CORRECTION
Grass catcher
not filling
(If so equipped)
Hard to push
Loss of drive
1. Cutling height too low.
2. Uft on blade wom off.
3. Catcher not venting air.
4. Low engine speed.
1. Grass is too high or
wheel height is too low.
2. Rear of lawn mower
housing/blade dragging
in grass.
3. Grass catcher too full.
4. Handle height position
not right for you.
1. Belt wear.
2. Belt off of pulley.
3. Drive cable worn or broken.
4. Dirt in drive pinions.
1. Raise cutting height.
2. Replace blade.
3. Clean grass catcher.
4. Set engine speed controlin
fast position.
1. Raise cutting height.
2. Raise rear of lawn mower
housing one (1)setting higher.
3. Empty grass catcher.
4. Adjust handle heightto suit.
1. Check/replace ddve belt.
2. Check/reinstall ddve belt.
3. Replace drivecable.
4, Clean ddve pinions,
17

ROTARY LAWN MOWER - - MODEL NO. 917.377960
CO
(3)

ROTARY LAWN MOWER - - MODEL NO. 917.377960
co
KEY PART
NO. NO
1 167163
2161105X479
3 131036
4 132001
5 63601
6 66426
7 131959
8 87692
9 164265
10 161551
11 73990500
12 51793
13 162949
14 850733X004
15 83816
16 162085
17 161548
19 165261
19 166907
20 161568X479
21 168227X479
22 150078
23 163183
24 63124
25 161333
25 163409
27 161550
28 88652
29 166036X479
30 851514
31 159267
32 851074
33 850263
34 851084
35 166032
36 166385
37 150406
DESCRIPTION
Handle, Upper DIx Comf. (Includes Gdp)
Handle, Lower
Bail, Cont. Wire DIx Comf. BIk
Guide, Rope, Side
Nut, Hex Lockwasher 1/4-20
Wire, Tie
Bolt,Handle 5/16-18 x 1.75
Knob, Handle
Grip, Hdl Foam Smooth
Bolt,Sq. Neck
Nut, Hex Lockwasher Ins. 5/16-18 UNC
Cotter, Hairpin
Engine control
Bracket, Upstop
Screw, Hex Washer Head Tapping 10-2
Kit, Door Rear
Seal, Door
Plug, Mulcher
Kit, Housing
Handle, Bracket Asm. Left
Handle, Bracket Asm. Right
Screw, Hex Wshd
Bolt,Hex Head 5/16-18 x5/8
Nut, Hex LockWshr 5/16-18
Baffle, Side
Screw 12 x 5/8
Skirt
Screw, Hinge 1/4-20 x 1.25
Belt Cover, Top
Adapter, Blade w/key Longer
Blade, 21"
Washer, Hardened
Lockwasher, Helical Spring 3/8
Screw, Hax Head 3/8-24 x 1.38
Pulley, Fixed
Bearing SupportAssy.
Bolt,Engine
KEY PART
NO. NO DESCRIPTION
38 ..... Engine (See Breakdown)
Craftsman 143.996710
39 169294 Grass Catcher Bag
40 161358 Grass Catcher Frame
41 85463 Danger Decal
45 166034 Rod, Pulley Engage
46 166041 Bushing
47 1200014 E-ring
48 85179 Retainer Clip
49 166039X007 Clamp
50 54583 Screw
51 166045 Spacer
52 166115 Sallevilla Washer
53 166037 Belt Cover, Bottom
54 750097 Screw
55 166383X479 Cable SupportBracket
56 68038 Nut
57 166391X004 Bracket Assy.
58 57808 Screw
59 166042 V-Groove Pulley
60 166050 IdlerArm Spacer
61 145212 Range Nut
62 155552 Locknut
63 166022X007 IdlerArm
64 166043 Idler Pulley
65 160829 ShoulderBolt
66 166885 Door Assy.
67 166028 MultiCut Guard
68 88349 Nut
- - 161058 Warning Decal (Not Shown)
- - 169206 Owner's Manual
Available accessories not includedwith lawn mower:.
71 33623 Gas Can (2.5 gal.)
71 33500 Fuel Stabilizer
71 33300 SAE 30W Oil (27 oz.)

ROTARY LAWN MOWER --MODEL NO. 917.377960
11, 23
r.o
24
41