Craftsman 917388350 User Manual 6.25HP 21 ROTARY LAWN MOWE Manuals And Guides L0010030

CRAFTSMAN Walk Behind Lawnmower, Gas Manual L0010030 CRAFTSMAN Walk Behind Lawnmower, Gas Owner's Manual, CRAFTSMAN Walk Behind Lawnmower, Gas installation guides

User Manual: Craftsman 917388350 917388350 CRAFTSMAN CRAFTSMAN 6.25HP 21 ROTARY LAWN MOWE - Manuals and Guides View the owners manual for your CRAFTSMAN CRAFTSMAN 6.25HP 21 ROTARY LAWN MOWE #917388350. Home:Lawn & Garden Parts:Craftsman Parts:Craftsman CRAFTSMAN 6.25HP 21 ROTARY LAWN MOWE Manual

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Owner's Manual

[RRFTSMRN"
6.25 HORSEPOWER
21" MULTI-CUT
ROTARY LAWN MOWER

Model No.
917.388350

• 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: _.'_vw.sears.com/craftsman

Warranty ...............................................
Safety Rules ............... _.........................
Assembly .............. :.....: .........................
Operation ....... '.......................................
Maintenance Schedule ........................
Maintenance .._......................................

LIMITED

TWO YEAR WARRANTY

2
2
4
6
10
10

Product Specifications ..........................
1
Service and Adjustments.,
.......... :........ 1.
Storage .................................................
1
Troubleshooting
...................................
1
Repair Parts ..........................................
3
Parts Ordering ............. _........ Back Cove

ON CRAFTSMAN

POWER

MOWER

For two years from date of purchase, when this Craftsman Lawn Mower is maintainec
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 workma
ship.
If this Craftsman Lawn Mower is used for commercial
or rental purposes, this warrant_
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 whi(
vary from state to state,
SEARS, ROEBUCK AND CO., D/817 WA, HOFFMAN ESTATES, ILLINOIS 60179

Safety standards require operator
presence control to minimize the risk of
injury. Your unit is equipped with cuch
controls, do not attempt to defeat the
function of the operator presence controls
under any circumstances.
TRAINING:
• Read this operator's
manual carefully.
Become familiar with the controls and
know how to operate your mower
properly.
Learn how to quickly stop
mower.
• Do not allow children to use your
mower. Never allow adults to use
mower without proper instructions.
• Keep the area of operation clear of all
persons, especially small children and
pets.
• Use mower only as the manufacturer
intended and as described
in this
manual.

• Do not operate mower if it has been
dropped or damaged in any manner.
Always have damage repaired before
using your mower.
• Do not use accessory attachments tha,
are not recommended
by the manufac.
turer. Use of such attachments
may b_
hazardous.
• The blade turns when the engine is
running.
PREPARATION:
• Always thoroughly check the area to b
mowed and clear it of all stones, sticks
wires, bones, and other foreign object,'
These objects will be thrown by the
blade and can cause severe injury.
• Always wear safety glasses or eye
shields when starting and while using
your mower.
Dress properly. Do not operate mowe
when barefoot or wearing open

sandals. Wear only solid shoes with
good traction when mowing.
• Check fuel tank before starting engine.
Do not fill gas tank indoors, when the
engine is running or when the engine is
hot. 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 artificial
light.
OPERATION:
• Keep your eyes and mind on your
mower and the area being cut. Do not
let other interests distract you.
• Do not mow wet or slippery grass.
Never run while operating your mower.
Always be sure of your footing - keep a
firm hold on the handles and walk.
• Do not put hands or feet near or under
rotating parts. Keep clear of the
discharge opening at all times.
• Always stop the engine whenever you
leave or are not using your mower, or
before crossing driveways, walks,
roads, and any gravel-covered areas.
• Never direct discharge of material
toward bystanders nor allow anyone
near the mower while you are operating
it.
• Before cleaning, inspecting, or repairing your mower, stop the engine and
make absolutely sure the blade and all
moving parts have stopped. Then
disconnect the spark plug wire and
keep it away from the spark plug to
prevent accidental starting.
• Do not continue to run your mower if
you hit a foreign object. Follow the
procedure outlined above, then repair
any damage before restarting and
operating your mower.
• Do not change the governor settings or
overspeed the engine. Engine damage
or personal injury may result.
• Do not operate your mower if it vibrates
abnormally. Excessive vibration is an
indication of damage; stop the engine,
safely check for the cause of vibration
and repair as required.
• Do not run the engine indoors. Exhaust
fumes are dangerous.

• Never cut grass by pulling the mower
towards you. Mow across the face of
slopes, never up and down or you
might lose your footing. Do not mow
excessively steep slopes. Use caution
when operating 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 the blade and the engine
mounting bolts often to be sure they are
tightened properly.
• Check all bolts, nuts and screws at
frequent intervals for proper tightness to
be sure mower is in safe working
condition.
• Keep all safety devices in place and
working.
• To reduce fire hazard, keep the engine
free of grass, leaves or excessive
grease and oil.
• Check grass catcher often for deterioration and wear and replace worn bags.
Use only replacement
bags that are
recommended
by and comply with
specifications
of the 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 flame or an ignition
source such as a hot water heater,
space heater, clothes dryer, etc.
ALook for this symbol to point out
important safety precautions. It means
CAUTIONt!!
BECOMEALERT!!!
YOUR
SAFETY IS INVOLVED.
ACAUTION:
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.
AWARNING:
The engine exhaust from
this product contains chemicals known to
the State of California to cause cancer,
birth defects, or other reproductive harm.

These accessorieswere available when thislawn mowerwas produced. They are not
shipped with your mower, They are also availableat most Sears retailoutletsand service
centers. Most Sears storescan alsoorder repair partsfor you,when you providethe model
numberof your lawn mower. Some of these accessoriesmay notapplyto your lawn mower.
LAWN

MOWER

PERFORMANCE

CLIPPING DEFLECTOR
FOR REAR DISCHARGE LAWN MOWERS

MULCHER

GRASS CATCHERS
FOR
REAR DISCHARGE
LAWNMOWERS

KITS

STABILIZER

FOR
!

SIDE DISCHARGE
GRASS
LAWN CATCHERS
MOWERS
GAS CANS

LAWN

MOWER

MAINTENANCE

MUFFLERS

AIR FILTERS

SPARK PLUGS

£
BELTS

BLADES

BLADE ADAPTERS

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

WHEELS

ENGINE OIL

TO REMOVE LAWN MOWER FROM
CARTON
• Remove loose parts included with
mower.
• Cut down two end comers 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
parts.

engine.
Your new lawn mower has been assembled at the factory with the exception of
those parts 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.

HOW TO SET UP YOUR LAWN
MOWER
TO UNFOLD HANDLE
IMPORTANT: Unfold handle carefully so
as not to pinch or damage control cables.
• Raise handles until lower handle
section locks into place in mowing
position.
• Remove protective padding, raise
upper handle section into place on
lower handle and tighten both handle
knobs.
• 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
presenc_
controlbar
Upper
handle
Liftup
Lower
handle

Mowing
position

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.

K]_IOWYOUR LAWN MOWER
READTHIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR LAWN
MOWER. Compare the iflustrations
with your lawn mower to familiarizeyourselfwiththe
locationof variouscontrolsand adjustments. Save this manualforfuture reference.
These symbols may appear on your lawn mower or in literature supplied with the
product. Learn and understand their meaning,

CAUTION
OR WARNING

ENGINE
ON

ENGINE
OFF

FAST

SLOW

CHOKE

FUEL

OLL

DANGER, KEEP HANDS
AND FEET AWAY

Operator presence control
bar

G rass

filler cap

Engine
with dipstick
Mulcher door

Lawn mower housing

IMPORTANT:
This lawn mower is shipped
WITHOUT OIL OR GASOLINE
in the

Wheel adjuster

engine.
MEETS CPSC SAFETY REQUIREMENTS

(on each wheel)

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.

Primer - pumps add_ional fuel from the
carburetor to the cytinder for use when
starting a cold engine.
Starter Handle - used for starting the engine.

The operationof any lawn mower
can resultin foreign objectsthrown
ntothe eyes, whichcan resultin
severe eye damage. Alwayswear safety
glasses or eye shieldswhile operatingyour
lawn mower or performing any adjustments
or repairs. We recommenda wide vision
safety mask overspectaclesor standard
safety glasses.
HOW TO USE YOUR LAWN MOWER

REAR BAGGING
• Liftrear doorof the lawn mower and place
the grass catcherframe hooksonto the
doorpivot pins.
• To convert to mulchingor discharging
operation,remove grass catcher and close
rear door.

ENGINE SPEED CONTROL
The engine speed was set at the factory for
optimum performance. Speed is not adjustable.

Pivot pins
SIDE DISCHARGING

ENGINE ZONE CONTROL

• Rear door must be closed.

ACAUTION:
Federal regulations require
an engine control to be installed on this
lawn mower in order to minimize the risk

• Open mulcher door and install discbarge
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.

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 pesitioned
behind the lawn mower handle to start and

SIMPLE STEPS TO REMEMBER
WHEN CONVERTING YOUR LAWN
MOWER

operate the lawn mower.
TO ADJUST CU'I'rlNG HEIGHT
• Raise wheels for low cut and lower wheels

FOR MULCHING

• Rear door closed.
• Mulcher door dosed.

for high cut.
• Adjust cutting height to suit your requirements. Medium position is best for most
lawns.

FOR REAR BAGGING • Grass catcher installed.
• Mulcher door closed.

• 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

FOR SIDE DISCHARGING

• Rear door closed.
• Side discharge deflector installed.

ACAUTION:
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.

Lever
Raise Wheels for Low Cut

TO CONVERT MOWER
Your lawn mower was shipped ready to be
used as a mulcher. To convert to bagging or
discharging:

Mulcher
door

Open
Mulcher Door

Discharge
deflector

problems, the fuel system should be
emptied before storage of 30 days or
longer. Drain the fuel tank, start the
engine and let it run until 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 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.
Engine oil
cap

cap

BEFORE STARTING ENGINE
OIL
Your lawn mower is shipped without oil in the
engine.
• Be sure mower is level and area around oil
flu is clean.
• Remove engine oil cap and fill to the full
line on the dipstick.
NOTE: Allow oil to settle down into
engine for accurate dipstick reading,
• Engine holds 20 ozs. of oil. Fortype and
grade of oil to use, see =ENGINE" in
Maintenance section of this manual.
• Pour oil slowly. Do not over fill.
• Check oil level before each use. Add oil if

TO START ENGINE
• To start a cold engine, push pnmer three
(3) times before t_ng to start. Use a firm
push. This step is not usually necessary
when starting an engine which has alreedy
run for a few minutes.
• Hold operator presence control bar down
to the handle and pull starter handle
quickly. Do net allow starter rope to snap
back.
• To stop engine, release operator presence
control bar.

needed. Fdlto full line on dipstick.
• To read proper level, tighten engine oil cap
each tin_.

NOTE: In cooler weather it may be
necessary to repeat pdming steps. In
warmer weather ove_' priming may cause
flooding and engine will not start. If you do
flood engine, wait a few minutes before
attempting tostart and do not repeat
priming steps.

• Reinstall engine oil cap and tighten.
• 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.

ADDGASOUNE
• Fill fuel tank. Use fresh, clean, regular
unleaded gasoline with a minimum of
87 octane. Do not mix oil with gasoline.
Purchase fuel in quantities that can be
used within 30 days to assure fuel
freshness.
AWARNING:
Experience indicates that
alcohol blended fuels (called gasohoi 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

MOWINGTIPS

MULCHING

• Under certain conditions, such as very tall
grass, it may be necessery to raise the
height of cut to reduce pushing effort and to
keep from overloading the engine and
leaving dumps of grass clippings. It may
also be necessary to reduce ground speed
and/or run the lawn mower over the area a
second time.

IMPORTANT:
For best performance, keep
mower housing free of built-up grass and
trash. Clean UNDERSIDE
OF MOWER

MOWING'rIPS

HOUSING after each use. 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
biedegrade quickly to provide nutrients for
the lawn. Always mulch with your highest
engine (blade) speed as this will provide
the best reoutting action of the blades.
• Avoid cutting your lawn when it iswet. Wet
grass tends to form clumps and interferes
with the mulching action. The best time to
mow your lawn _the early aftemoon. At
this time the grass has dried and the newly
cut area will not be exposed to the direct

• 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.

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,

mowslowlyandraisetherear of thelawn
mower one wheel adjuster setting higher
than the front.
• Cert,_n types of grass and _
conditions
may require that an area be mulched a
second time to comple_
hide the

ctippings.
Whendeinga secondcut,mow
acroas or perpendta.dar to the flint cut path.
• Change your cutting pattem from weak to
weak. Mow north to south one week then
change to east to wast the next weak. This
will help prevent matting and graining of
the lawn.

MAINTENANCE

SCHEDULE

FILL IN DATES
AS YOU COMPLETE
REGULAR SERVICE
Check for Loose Fasteners

SERVICE DATES
_

Clean/InspectGrassCatcher
a

Clean Lawn Mower

_jO (Power-Propelled
CleanUnder DriveMowers)
Cover

(Power-Propelled Mowers)
E

Check/Sharpen/Replace Blade
Check ddvs belt/pulleys
Lubrication Chart
Clean Battery/Recharge
IElectdc Start Mowers)

If°4

E
N

Check Engine Oil Level
Change Engine Oil

1_1.2

Clean Air Filter

Ik/ =

Inspect Muffler
Clean or Replace Spark Plug

i_1

N
E Replece
AirFilter
PeparCadddge
I 234-

lit2

Change mo_eoften when operating under a ha_,'y lead or in high ambient temperatures,
Service
more often '/then operating in dirty or dusty conditk)ns.
Replace blades more often when mowingin sandy SOU.
Charge 48 hoursat end of season,

GENERAL

RECOMMENDATIONS

LUBRICATION

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.

CHART

Wheel
adjusters

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 yesr, replace the spark plug,
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
• Check engine oil level.
• Check for loose fasteners.
LUBRICATION
Keep unitwelllubricated
(See "LUBRICATION
CHART").

Brake spdng

ine oil
Rear
door
hinge
!_
t_

' Handle bracket
mounting pin

SPRAY LUBRICANT
SAE 30 MOTOR OIL. REFER TO ENGINE MAINTENANCE SECTION.

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.

PRODUCT
MODEL

SPECIFICATIONS

NUMBER

917.388350

SERIAL NUMBER
DATE OF PURCHASE
GASOLINE
OILTYPE

CAPACITY/TYPE:

i .5 QUARTS
UNLEADED

(API-SF/SG/SH):

REGULAR

SAE 30 (ABOVE 32°F)
SAE 5W-30 (BELOW 32°F)

)IL CAPACITY:

20 OZS.

SPARK PLUG(GAP:

.030")

CHAMPION

VALVE CLEARANCE:

RJ19LM

INTAKE:
EXHAUST:

SOLID STATE IGNITION
AIR GAP:

.0125 IN.

BLADE BOLT TORQUE:

35-40 FT. LBS.

• The model and serial numbers will be found
lawn mower housing.Record
provided above.

on a decal attached

to the rear of the

both serial number and date of purchase in space

LAWN MOWER
Always observesafety rules when performing
any maintenance.
TIRES
• Keep tiresfree of gasoline,oil,or insect
controlchemicalswhichcan harm rubber.
• Avoidstumps,stones,deep ruts,sharp
objectsand otherhazards that may cause
tire damage.
BLADE CARE
For best results, mower blade must be
kept sharp. Replace bent or damaged
blades.
TO REMOVE

OR J19LM

.004 - .008
.004 - .008

BLADE

• Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
• Turn lawn mower on its side. 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 turning counterclockwise.
• 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.
TO REPLACE

BLADE

• Position 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
blade bolt, turning clockwise.
• The recommended tightening torque is
35-40 ft. Ibs.
IMPORTANT:
Blade bolt is grade 8 heat
treated.

TO SHARPEN
NOTE:

BLADE

We do not recommend

sharpening 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.
Crank shaft
Blad_
keyway
Blade

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.
TO CHANGE

ENGINE

OIL

NOTE: Before tipping lawn mower to
drain oil, drain fuel tank by running
engine until fuel tank is empty.
• Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
• Remove engine oil cap; lay aside on a
clean surface.
• Tip lawn mower on its side and drain oil
into a suitable container. Rock lawn

Bo_
Lockwasher Hardened
washer

GRASS

Crank
Blade shaft
Trailing adapter
edge

CATCHER

• The grass catcher may be ho_3d 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
Use only high quality detergent oil rated
with API service classification SF, SH or
SG. Select the oil's SAE viscosity grade
according to your expected operating
SAE VISCOSITY

-20*

• Replace engine oil cap.
• Reconnect spark plug wire to spark
plug.

Container

AIR FILTER

LUBRICATION

*C -30"
.20*
TEMPERATURE

mower back and forth to remove any oil
trapped inside of engine.
• Wipe off any spilled oil on lawn mower
and on side of engine.
• Fill engine with oil. Fill only to the
"FULL" line on the dipstick. DO NOT
OVER FILL.

GRADES

o"
-10"
0.
RANGE ANTICIPATEC

10*
20* "
30*
BEFORE NEXT OIL CHANGE

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. Do not wash air filter.
TO CHANGEAIR

FILTER

• Remove the air filter cover by turning
counterclockwise to the stop and pull
away from collar.
° Remove filter from inside of cover.

CLEANING

• Clean the inside of the cover and the
collar to remove any dirt accumulation.
• Insert new filter into cover.
• Put air filter cover and filter into collar

IMPORTANT:
For best performance, kee
mower housing free of built---up grass
and trash. Clean underside of mower

aligning the tab with the slot.
• Push in on cover and turn clockwise to
tighten.
Collar

Ctip

Turn
to
re.move

Slot
Air filter

clockwise
Air filter cover

to tighten

MUFFLER
Inspect and replace corroded muffler as it
could create afire hazard and/or damage.

SPARK PLUG
Change your spark plug each year to
make your engine start easier and run
better. Set spark plug gap at .030 inch.

MOWER

TO ADJUST

CUTTING

See "TO ADJUST

HEIGHT

CUTTING

HEIGHT"

• Clean engine often to keep trash from
accumulating.
A clogged engine runs
hotter and shortens engine life.
• Keep finished surfaces and wheels fr_
of all gasoline, oil, etc.
• We DO NOT recommend
using a
garden hose to clean lawn mower
unless the electrical system, muffler, ai
filter and carburetor are covered to
keep water out. Water in engine can
result in shortened engine life.

_CAUTION:
Before performing any
service or adjustments:
• Release control barand 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

housing after each use.
_I, CAUTION:
Disconnect spark plug win
from spark plug and place wire where it
cannot come in contact with the spark
plug.
• Turn lawn mower on its side. Make su=
air filter and carburetor are up. Clean
the underside of your lawn mower by
scraping to remove build--up of grass
and trash.

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 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.
• Remove upper handle and all parts
attached to lower handle.
• Remove hairpin cotters from lower
handle bracket mounting pin.
• Squeeze lower handle in to remove it
from mounting pins.
• Turn lower handle over to raise or low
handle.
• Squeeze lower handle in and positior
holes onto mounting pins on handle
bracket.
• Reassemble
upper handle and all par
removed from lower handle.

Lower
Rotate

v ._;_andle--

TO ASSEMBLE GRASSCATCHER
• Putgrasscatcherframe into grass bag
with rigid part of bag on the bottom.
Makesure the frame handleis outside
of the bagtop.
• 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.
_,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

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.
• Clean entire lawn mower (Sea "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
_arts for damage, breakage and wear.
place if necessary.
• Touch up all rusted or chipped paint
surfaces; sand lightly before painting.
HANDLE

ENGINE
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 or
adjustment.
IMPORTANT:
Never tamper with the
engine governor, which is factory set for
proper engine speed. Overepeeding the
engine above the factory high speed
setting can be dangerous, if you think the
engine-governed
high speed needs
adjusting, contact your nearest authorized
service center, which has proper
equipment and experience to make any
necessary adjustments.
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.

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.
Operator Presence
Control Bar
_
Upper
_'/_
Handle ----'-_
Fold Forward

_
---_.'..:.::

For Storage __

Mowing
Position
Lower Handle

You can fold your lawn mower handle for
storage.
• Squeeze the bottom ends of the lower
handle toward each other until the lower
handle dears the handle bracket, then
move handle forward.

handle
Handle
bracket

• Loosen upper handle mounting bolts
enough to allow upper handle to be folded
back.

Squeeze
to fold

ENGINE OIL

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.
• Drain the fuel tank.
• Start the engine and let it run until the
fuel lines and carburetor are empty.
• Never use engine or carburetor cleaner
products in the fuel tank or permanent
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.

Drain oil (with engine warm! and replace
with clean engine oil. (See ENGINE' in
the Maintenance section of this manual).
CYLINDER
• Remove spark plug.
o Pour one ounce (29 ml) of oil through
spark plug hole into cylinder.
• Pull starter handle slowly a few times to
distribute oil.
• Replace with new spark plug.
OTHER
• Do not store gasoline from one season
to another.
• Replace your gasoline can if your can
starts to rust. Rust and/or dirt in your
gasoline will cause problems.
• If possible, store your unit indoors and
cover it to give protection from dust and
dirt.
• Cover your unit with a suitable protective cover that does not retain moisture.
Do not use plastic. Plastic cannot
breathe which allows condensation to
form and will cause your unit to rust.
IMPORTANT:
Never cover mower while
engine

and exhaust areas are still warm.

ACAUTION:
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.

TROUBLESHOOTINGCHART
PROBLEM
CAUSE
Does not start

CORRECTION

1.
2.
3.

Dirty air filter.
Out of fuel.
Stale fuel.

1.
2.
3.

Water in fuel.

Spark plug wire is
disconnected.

with fresh gasoline.
Connect wire to plug.

6.
7.

Bad spark plug.
6.
Loose blade or broken blade 7.

Replace spark plug.
Tighten blade bolt or

adapter.
Control bar in released

position.
Control bar defective.

replace blade adapter.
Depress control bar to
handle.

Replace control bar.

Clean/replace air filter.
Fill fuel tank.
Drain tank and refill with
fresh clean fuel.
Drain fuel tank and
carburetor and refill tank

TROUBLESHOOTINGCHART
PROBLEM
CAUSE
Loss of power

Poor cut- uneven

Excessive
vibration

CORRECTION

Rear of lawn mower housin( 1.
or cutting blade dragging
in heavy grass.
Cutting too much grass.
2.

Set to "Higher Cut"
position.

3.
4.

Dirty air filter.
Buildup of grass, leaves,
and trash under mower.

3.
4.

Set to "Higher Cut"
position.
Clean/replace air filter.
Clean underside of mower

5.
6.

Too much oil in engine.
Walking speed too fast.

housing.
Check oil level.

Cut at slower walking
speed.

Worn, bent or loose blade.

Wheel heights

Buildup of grass; leaves
end trash under mower.

Replace blade. "13ghten
blade belt.
Set allwheels at same
height
Clean underside of
mower housing.

Worn, bent or loose blade.

Bent engine crankshaft.

uneven.

Replace blade. "lighten
blade holt.
Contact an authorized
service center.

Starter rope hard
to pull

Grass catcher
not filling (if so
equipped)
Hard to push

Engine flywheel brake is on
when control bar is released.

Bent engine crankshaft.

3.
4.

Blade adapter broken.
Blade dragging in grass.

1.
2.

Cutting height too low.
Lift on blade wom off.

Catcher not venting air.

1.
2.

Grass is too high or wheal
height is too low.
Rear of lawn mower

housing or blade dragging
in grass.
Grass catcher too full.

Handle height position not
right for you.

1. Depress controlbar to
upper handle before
pullingstarterrope.
2. Contact an authorized
serVicecenter.
3.
' 4.

Replace blade adapter.
Move lawn mowerto cut
grass orto herd surface
to start engine

Raise cutting height.

2.
3.

Replace blade.
Clean grass catcher.

Raise cutting height.

Raise rear of lawn mower

3.
4.

housing one (1) setting
higher.
Emptygrasscatcher.
Adjusthandleheightto
suit.

CRAFTSMAN ROTARY LAWN MOWER-- MODEL NO. 917.388350

44
68
21

37
20

CRAFTSMAN ROTARY LAWN MOWER-KEY
NO.
1
2
3
4
5
6
7
9
10
11
12
13
14
15
16
17
18
19
2O
21
22
23
24
25
26
27
28
29
30

PART
NO.
869O2
169709)(479
169708X479
132001
636O1
131959
66426
154132
165754
156577
750097
850733X004
136376
51793
147286
165946X479
17600406
167132X004
167133X004
165858
168360X004
166875
751153
166111X479
166112)(479
851856
152124
160835X007
19112222

DESCRIPTION
Control Bar
Upper Handle
LowerHandle
Rope Guide
Locknut 1/4-20
Handle Bolt
Wire Tie
Hinge Bracket
MuicherDoor
Engine Zone ControlCable
Hex Washer Head Screw #10-24 x 1/2
Up-Stop Bracket
HandleKnob
HairpinCotter
Hinge Rod
Support Bracket
Screw
Axle Arm Assembly - LF
Axle Arm Assembly - RF
Rear Skirt
Selector Spdng - Front
Rear Door Assembly Kit (Incl. Springs)
Locknut 5/16-18
Handle Bracket Assembly (Left)
Handle Bracket Assembly (Right)
Screw 1/4-20 x 3/8
HingeSpdng
Wheel AdjustingBracket - Front
Spacer

KEY
NO.
31
32
33
34
36
37
39
40
41
42
43
44
45
46
48
52
53
54
55
56
57
67
68
70
---

PART
NO.
165760
169421X004
87877
165762X004
160828
151157
83923
77400
88652
165766
165767
165912
150406
85463
165761X004
166878
851084
850263
851074
165833
851514
166113
165755
......
161058
171177

MODEL NO. 917.388350

DESCRIPTION
Clip on DischargeGuard
Selector Spdng - Rear
Selector Knob
Axle Arm Assembly- LR
ShoulderBolt 5/16-18
Wheel Assembly
Flanged Locknut
Hubcap
HingeScrew
Spdng(LH)
Spdng(RH)
Door Bolt
Hex Head Thread Rolling Screw 3/8-16 x 1
DangerDecal
Axle Arm Assembly- RR
Housing Assembly (Incl. Ref. #17, 18 & 46)
Hex Head Screw 3/8-24 x 1-3/8 Grd. 8
HelicalLockwasher
HardenedWasher
21" Blade
Blade Adapter
Grass Bag
Catcher Frame
Engine- (See Breakdown) Craftsman 143.006200
Warning Decal (Not Shown)
Owner's Manual

Available accessories not included with lawn mower:
7133623
Gas Can (2.5 gal.)
7133500
Fuel Stabilizer
7133000
SAE 30W Oil (20 oz.)

CRAFTSMAN

4-CYCLE

ENGINE

MODEL NUMBER 143.006200

298

370C ""

4OO
135

130

101
120
119
125

_310

CRAFTSMAN

KEY
NO,
1
2
6
7
12
12A

PART
NO.
37266
26727
33734
36557
36775
36558

12B
14
15
16
17
18

36694
28277
30589
34839A
31335
651018

19
20
30
40

36281
32600
36776
40004
40005

36070
36071

40006

43
45

40007
20381
36777

46
48
50
52
69
70

32610A
27241
37460
29914
35261
34311E

72
73
75
80
81
82
83
86
89
90
92
93
100
101
103

30572
28833
27897
30574A
30590A
30591
30588A
650488
611004
611112
650815
650816
34443B
610118
651007

110

37047

119
120
125

36787
36825
37288

126
130
135
150
151
151A

37289
6021A
35395
31672
31673
40017

4-CYCLE

ENGINE

MODEL NUMBER 143.006200

KEY
NO.

DESCRIPTION
Cylinder (Incl. 2,20 & 150)
Dowel Pin
Breather Element
Breather Ass'y. (Incl. 6 & 12A)
Breather Tube
Breather Cover & Tube
(Incl. 12B)
Breather Tube Elbow
Washer
Governor Rod (incl. 14)
Governor Lever
Governor Lever Clamp
Screw, Torx T-15,
8-32 x 19/64"
Extension Spring
Oil Seal
Crankshaft
Piston, Pin & Ring Set (Std.)
Piston, Pin & Ring Set
(.010" OS)
Piston & Pin Ass'y. (Std.)
(Incl. 43)
Piston & Pin Ass'y.(.010"
OS)(incl, 43)
Ring Set (Std.)
Ring Set (.010" OS)
Piston Pin Retaining Ring
Connecting Rod Ass'y.
(Incl. 46)
Connecting Rod Bolt
Valve Lifter
Camshaft (MCR)
Oil PumpAss'y.
Mounting Flange Gasket
Mounting Flange
(Incl. 72 thru 83,306)
Oil Drain Plug (Incl. 73)
Drain Plug Gasket
Oil Seat
Governor Shaft
Washer
Governor GearAss'y. (Incl. 81)
Governor Spool
Screw, 1/4-20 x 1-1/4"
Flywheel Key
Flywheel
Belleville Washer
Flywheel Nut
Solid State Ignition
Spark Plug Cover
Screw, Torx T-15,
10-24 x 15/16"
Ground Wire
Cylinder Head Gasket
Cylinder Head
Exhaust Valve (Std,)
(Incl. 151)
Intake Valve (Std.) (Incl. 151)
Screw, 5/16-18 x 1-1/2"
Resistor Spark Plug (RJ19LM)
Valve Spring
Valve Spring Cap
Intake Valve Seal

PART
NO.

169
172

36783
36784

174
178
182
184

30200
29752
6201
26756

185
186
189
191
195
207
216
223
224
238
239
241

36785
32653
650839
36559A
610973
34336
33086
650451
36786
650932
34338
35797

245
250
260
261

35066
35065
36980
30200

262
275
277
285
287
290

650831
36790A
650988
35000A
650926
29774

292
298

26460
28763

300
301
305

36916
36246
35647

306
307
309
310
313
325
355
370A
370C
370K

36996
35499
650562
35648
34080
37152
590701
36261
37318
36695

370R
371
380
390
400

37317
37269
640262
590737
36792B

416

36085

417
900

650821

900

NOTE:
590694
NOTE:
inches

DESCRIPTION
Valve Cover Gasket
Valve Cover
Screw, 10-24 x 9/16"
Nut & Lock Washer, 1/4-28
Screw, 1/4-28 x 7/8"
Carburetor To Intake Pipe
Gasket
Intake Pipe
Governor Link
Screw, 1/4-20 x 3/8"
S.E. Brake Bracket (Incl. 195)
Terminal
Throttle Link
R.P.M. AdjustingLever
Screw, 1/4-20 x 1"
Intake Pipe Gasket
Screw, 10-32 x 49/64"
Air Cleaner Gasket
Air Cleaner Collar
Air Cleaner Filter
Air Cleaner Cover
Blower Housing
Screw, 10-24 x 9/16'
Screw, 1/4-20 x 1/2"
Muffler
Screw, 1/4-20 x 2-5/16"
Starter Cup
Screw, 8-32 x 21/64"
Fuel Line
Fuel Line Clamp
Screw, 10-32 x 35/64"
Fuel Tank (Incl. 292 & 301)
Fuel Cap
Oil Fill Tube
"O"-Ring
"O"-Ring
Screw, 10-32 x 1/2"
Dipstick
Spacer
Spring Clip
Starter Handle (Black)
Identification Decal
Primer Decal (3 X)
Starter Decal
Warning Decal
6.5 H.P. Craftsman Decal
Carburetor (Incl. 184)
Rewind Starter
Gasket Set
_ncl. Items Marked *)
park Arrestor Kit (Incl.
417)(Optional)
Screw, 10-32 x 1/2" (Optional)
Replacement Engine NONE
Replacement S/B 750860,
order from 71-999
RPM High 2900 to 3200

This engine could have been built with
starter).
All componentdimensionsgiven in U.S,
1 inch = 25.4 mm

For in-home major brand repair service:
Call 24 hours a day, 7 days a week
1-800-4-MY-Home
sM(1-800-469-4663)
Para pedir servicio de reparaci6n a domicilio
1-800-676-5811
In Canada for all your service and parts needs call
Au Canada pour tout le service ou les pi_ces
1-800-665-4455
For the repair or replacement parts you need:
Call 6 am-llpm CST, 7 days a week

PartsDirect
1-800-366-PART

(1-800-366-7278)

Para ordenar piezas con entrega a domicilio
1-800-659-7084
For the location of a Sears Parts and Repair Center
in your area:
Call 24 Hours a day, 7 days a week
1-800-488-1222
For information on purchasing a Sears Maintenance
Agreement or to inquire about an existing Agreement:
Call 9 am-5 pro, Monday - Saturday
1-800-827-6655

SEARS

171177

11.19.99

Printed in U.S.A.

Source Exif Data:

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Page Layout                     : SinglePage
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Create Date                     : Mon Apr 02 11:41:14 2007
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Subject                         :

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Craftsman 917388350 User Manual 6.25HP 21 ROTARY LAWN MOWE Manuals And Guides L0010030

CRAFTSMAN Walk Behind Lawnmower, Gas Manual L0010030 CRAFTSMAN Walk Behind Lawnmower, Gas Owner's Manual, CRAFTSMAN Walk Behind Lawnmower, Gas installation guides

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