Craftsman 917.379610 User Manual
Owner's Manual
ICRRFTSMRN°J
6.75 HORSEPOWER
21" REAR DISCHARGE
POWER PROPELLED
ROTARY LAWN MOWER
Model No.
917.379610
• Safety
• Assembly
• Operation
• Maintenance
• Espa_ol
• Repair Parts
NOTE: Engines which are cedffied to comply with California and U.S. EPA emission regulations
for SORE (Smatl Off Road Equipment), are certified to operate on regular unleadedgasoline,
and include the following emission control systems: Engine Modification (EM), and Three-way
Catalyst (TWC) (If so equipped).
AVISO: Los motores homologados para cumplir con la reglamentaci6n sobre emisiones de
California y de la Agencia de Protecci6n Ambiental estadounidense (EPA) para equipos
pequefios no cimulantes (SORE) funcionan con gasolina normal sin plomo, e incluyen los
siguientes sistemas de control de emisiones: modificaci6n del motor (EM) y catalizador de triple
acci6n (TWC) (en caso de tenet/o).
The D.O.M. decal includes engine life specifications for the emissions-related useful life period of
your engine. This period relates to the emission compliance life as certified by EPNCARB. To
find theiifa period specification for your engine, please match one of the following letters with the
letter printed on your D.O.M. decal: (C) 125 hours, (B) 250 hours, (A) 500 hours.
La calcomanfa D.O.M. incluya especiflcaciones sobre la duraci6n del motor para el perfodo de
vida util de su motor relaccionado con emisiones, Este periodo se relaciona con la duraci6n en
conformidad con las emisiones seg0n Io cerUficado por EPNCARB. Para hallar la especificaci6n
del perfodo de vida de su motor, mire cudl de las siguientes letras viene impresa en su
calcomanfa D.O.M.: (C) 125 horas, (B) 250 horas, (A) 500 horas.
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.corn/craftsman
Warranty ................................................ 2
Safety Rules ...................................... 2-4
Assembly ............................................... 5
Operation ........................................... 6-9
Maintenance Schedule ....................... 10
Maintenance .................................. 10o13
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 dudng 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, Roebuck and Co., D/817 WA, Hoffman Estates, Illinois 60179
Product Specifications ......................... 11
Service and Adjustments ..................... 14
Storage .......................................... 15-16
Troubleshooting .................................. 17
Repair Parts ......................................... 35
Parts Ordering ...................... Back Cover
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 indNiduaJs,
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 be[ore mowing. Stop machine if
anyone enters the area.
• Do not operate the mower when
barefoot or wearing open sandals.
Always wear substantial foot wear.
• Do not pull mower backwards unless
absolutely necessary. Always look
down and behind before and while
moving backwards.
• Do not operate the mower without
proper guards, plates, grass catcher or
other safety protective devices in place.
• See manufacturer's instructions for
proper operation and installation of
accessories. Only use accessodes
2 approved by the manufacturer.
• Stop the blade(s) when crossing gravel
drives, walks, or roads.
• Stop the engine (motor) whenever you
I_ave the equipment, before cleaning
the mower or unclogging the chute.
• Shut the engine (motor) off and wait
until the blade comes to complete stop
before removing grass catcher,
• Mow only in daylight or good artificial
light.
• Do not operate the machine while
under the influence of alcohol or drugs.
• Never operate machine in wet grass.
Always be sure of your footing: keep a
firm hold on the handle and walk; never
run.
• Disengage the self-propelled mecha-
nism or drive clutch on mowers so
equipped before starting the engine
(motor),
• If the equipment should start to vibrate
abnormally, stop the engine (motor)
and check immediately for the cause.
Vibration is generally a warning of
trouble.
• Always wear safety goggles or safety
glasses with side shields when
operating mower.
II. SLOPE OPERATION
Slopes are a major factor related to slip
and fall accidents which can result in
severe injury. All slopes require extra
caution. If you feel uneasy on a slope, do
not mow it.
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 tdm 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 watchfut 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 sma_l
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 acciden-
tal starting,
• Keep nuts and bolts, especially blade
attachment bolts, tight and keep
equipment in good condition.
• Never tamper with safety devices.
Check their proper operation regularly.
• Keep machine free of grass, leaves, or
other debris build-up. Clean oil or fuel
spillage. Allow machine to cool before
storing.
• Stop and inspect the equipment if you
strike an object. Repair, if necessary,
before restarting.
• Never attempt to make wheel height
adjustments while the engine (motor) is
running.
• Grass catcher components are subject
to wear, damage, and deterioration,
which could expose moving parts or
allow objects to be thrown. Frequently
check components and replace with
manufacturer's recommended parts,
when necessary.
3
• Mower blades are sharp and can cut.
Wrap the blade(s) or wear gloves, and
[_seextra caution when servicing them.
• Do not change the engine governor
setting or overspeed the engine.
4$Look for this symbol to point out
important safety precautions: it means
CAUTION!!! BECOMEALERT!H YOUR
SAFETY IS INVOLVED.
CAUTION: 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.
A CAUTION: Muffler and other engine
parts become extremely hot during
operation and remain hot after engine
has stopped. To avoid severe burns on
contact, stay away from these areas.
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
_WARNING: Engine exhaust, some of its
constituents, and certain vehicle
components contain or emit chemicals
known to the State of California to cause
cancer and birth defects or other
reproductive harm.
_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.
CLIPPING DEFLECTOR
FOR REAR DISCHARGE LAWN MOWERS
FOR
REAR DISCHARGE
GRASS CATCHERS
LAWN MOWERS
LAWN MOWER MAINTENANCE
MUFFLERS
BELTS aLADES
MULCHER KITS
FOR
SIDE DISCHARGE
GRASS CATCHERS
LAWN MOWERS
AIR FILTERS
BLADE ADAPTERS WHEELS
4
STABILIZER
<U
GAS CANS
SPARK PLUGS
ENGINE OIL
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 comers 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.
HOWTO SET UPYOUR 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
control bar
Lift u
Mowing
position
Lower handle
5
KNOWYOUR LAWN MOWER
READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR .
LAWN MOWER, Compare the illustrations with your lawn mower to familiarize yourself
with the location of various controls and adjustments. Save this manual for future
reference.
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 ON OFF ANO FEET AWAY
Engine zone
control cable
Starter handle
Grass catcher
Engine oil cap Housing
w/dipstick
Primer
Operator presence control bar
Drive gontrol lever
Handle knob
Gasoline cap
Drive cover
IMPORTANT: This lawn mower is
shipped WITHOUT OIL OR GASOLINE Wheel adjuster
in the engine. (oneach 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 stad the
engine. Release to stop the engine.
Primer - pumps additional fuel from the
carburetor to the cylinder for use when
stading a cold engine.
Starter handle - used for starting the
engine.
Drive control lever - used to engage
power-propelled forward motion of lawn
mower.
6
Theoperationofanylawn
. S,_"rf 0L_SU
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.
HOWTO USEYOUR LAWN MOWER
ENGINE SPEED
The engine speed was set at the factory
for optimum performance. Speed is not
adjustable.
ENGINE ZONE CONTROL
_I,CAUTION: Federal regulations require
an engine control to be installed on this
lawn mower in order to minimize the risk
of blade contact injury. Do not under any
circumstances attempt to defeat the
function of the operator control. The blade
turns when the engine is running.
• Your lawn mower is equipped with an
operator presence control bar which
requires the operator to be positioned
behind the lawn mower handle to start
and operate the lawn mower.
TO ADJUST CUTTING HEIGHT
Raise wheels for low cut and lower
wheels for high cut, adjust cutting height
to suit your requirements. Medium
position is best for most lawns.
• To change cutting height, squeeze
adjuster lever toward wheel. Move
wheel up or down to suit your require-
ments. Be sure all wheels are in the
same setting.
NOTE: Adjuster is properly positioned
when plate tab inserts into hole in lever.
Also, g-position adjusters (if so equipped)
allow lever to be positioned between the
plate tabs.
Lowe_.._rWheelsforHighCut r._ _.._
mowercanresultin
foreign objects thrown into
the eyes, which can result
in severe eye damage.
PlateTab
TO CONVERT MOWER
Yourlawn mower was shipped readyto be
used as a mulcher. To convert to bagging :
REAR BAGGING
• Lift reardoor ofthe lawn mower and place
the grasscatcherframe hooks ontothe
door pivotpins.
• To convertto mulchingoperation,remove
grass catcher and close rear door.
_,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 prepped open.
.._ Pivot pins
Grass
catcher
handle
Catcher frame hoar i _-.
TO EMPTY GRASS CATCHER
1. Open door and 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.
Grass
catcher
frame
handle
Bag
handle
RaiseWheels for Low Cut Lever
7
DRIVE CONTROL
• _elf-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 stop 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.
Drive
Operator presence controlbar control
To engage control
drive control disengaged
ADD GASOLINE
• 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
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 oilto use, see
"ENGINE" in Maintenance section of this
manual.
1. Be sure lawnmower is level and area
around oil fill is clean.
2. Remove engine oil cap and fill to the
full line on the dipstick. Pour oil slowly.
Do not over fill.
NOTE: Allow oil to settle down into engine
for accurate reading. To read proper level,
tighten engine oil cap, then remove it to
read the dipstick.
3. Reinstall engine oil cap and tighten.
• Check oil level before each use. Add
oil if needed. Fill to full line on dipstick.
• Change the oit after every 25 hours of
operation or each season. You may
need to change the oil more often
under dusty, dirty conditions.
Engine
c_Icap
TO START ENGINE
NOTE: Due to protective coatings on the
engine, a small amount of smoke may be
present during the initial use of the
product and should be considered
normal.
1. To start a cold engine, push primer
three (3) times before trying to start.
Use a firm push. This step is not
usually necessary when starting an
engine which has already run for a
few minutes.
2. Hold operator presence control bar
down to the handle and pull starter
handle quickly. Do not allow starter
rope to snap back.
8
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.
MOWlNGTIPS
• 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 a small
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 MOWINGTIPS
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
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