Craftsman 917378422 Owner’s Manual

Owner's Manual

iCRnFTSMnN°I

ROTARY LAWN MOWER

6.75 Horsepower

Power-propelled

21" Rear Discharge

Model No.

917.378422

CAUTION: Read and follow all

Safety Rules and Instructions beforeoperatingthisequipment

Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

Visit ourCraftsman website:www.sears.com/craftsman

Warranty ............................................... 2

Safety Rules ...................................... 2-4

Assembly / Pre-Operation .................... 5

Operation ........................................... 6-9

Maintenance Schedule ...................... 10

Maintenance ................................. 10-13

Product Specifications ........................ 11

Service and Adjustments .............. 13-14

Storage ......................................... 15-16

Troubleshooting ........................... 16-17

Repair Parts .................................. 34-43

Sears Service ...................... Back Cover

LIMITED TWO YEAR WARRANTY ON CRAFTSMAN POWER MOWER For two years from date of purchase, when this Craftsman Lawn Mower is maintained,

lubricated, and tuned up according to the operating and maintenance instructions in the owner's manual, Sears will repair free of charge any defect in material or workman-

ship.

Ifthis Craftsman Lawn Mower is used for commercial or rental purposes, this warranty applies for only 90 days from the date of purchase.

This Warranty does not cover:

• Expendable items which become worn during normal use, such as rotary mower blades, blade adapters, belts, air cleaners and spark plug.

• Repairs necessary because of operator abuse or negligence, including bent crankshafts and the failure to maintain the equipment according to the instructions

contained in the owner's manual.

Warranty service is available by returning the Craftsman power mower to the nearest Sears Service Center/Department in the United States. This warranty applies only while this product is used 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

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.

_l_Look for this symbol to point out

important safety precautions. It means

CAUTIONE!! BECOMEALERT!!! YOUR SAFETY IS INVOLVED.

A 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.

AWARNING: 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 repro- ductive harm.

AWARNING: 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.

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.

I.GENERALOPERATION

• Read, understand, and follow all instructions on the machine and in the

manual(s) before starting. Be thor-

oughly familiar with the controls and the proper use of the machine before starting.

• Do not put hands or feet near or under rotating parts. Keep clear of the

discharge opening at all times.

• Only allow responsible individuals, who are familiar with the instructions, to operate the machine.

• Clear the area of objects such as

rocks, toys, wire, bones, sticks, etc., which could be picked up and thrown by the blade.

• Be sure the area is clear of other people before mowing. Stop machine if

anyone enters the area.

• Do not operate the mower when barefoot or wearing open sandals.

Always wear substantial foot wear.

• Do not pull mower backwards unless absolutely necessary. Always look

down and behind before and while

moving backwards.

• Do not operate the mower without proper guards, plates, grass catcher or other safety protective devices in place.

• See manufacturer's instructions for proper operation and installation of accessories. Only use accessories approved by the manufacturer.

• Stop the blade(s) when crossing gravel drives, walks, or roads.

• Stop the engine (motor) whenever you leave the equipment, before cleaning

the mower or unclogging the chute.

• Shut the engine (motor) off and wait until the blade comes to complete stop

before removing grass catcher.

• Mow only in daylight or good artificial light.

• Do not operate the machine while under the influence of alcohol or drugs.

• Never operate machine in wet grass. Always be sure of your footing: keep a

firm hold on the handle and walk; never run.

• Disengage the self-propelled mecha- nism or drive clutch on mowers so

equipped before starting the engine (motor).

• If the equipment should start to vibrate abnormally, stop the engine (motor)

and check immediately for the cause.

Vibration is generally a warning of trouble.

• Always wear safety goggles or safety glasses with side shields when

operating mower.

I1. 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 trim excessively steep slopes.

• Do not mow on wet grass. Reduced footing could cause slipping.

II1. CHILDREN

Tragic accidents can occur if the operator

is not alert to the presence of children.

Children are often attracted to the

machine and the mowing activity. Never

assume that children will remain where you last saw them.

• Keep children out of the trimming area and under the watchful care of another

responsible adult.

• Be alert and turn machine off if children enter the area.

• Before and while walking backwards, look behind and down for small

children.

• Never allow children to operate the machine.

• Use extra care when approaching blind corners, shrubs, trees, or other objects that may obscure vision.

IV. SERVICE

• Use extra care in handling gasoline and other fuels. They are flammable and vapors are explosive.

-Use only an approved container.

- Never remove gas cap or add fuel with the engine running. Allow

engine to cool before refueling. Do

not smoke.

-Never refuel the machine indoors.

- Never store the machine or fuel

container inside where there is an open flame, such as a water heater.

• Never run a machine inside a closed area.

• Never make adjustments or repairs with the engine (motor) running.

Disconnect the spark plug wire, and

keep the wire away from the plugto prevent accidental starting.

• Keep nuts and bolts, especially blade attachment bolts, tight and keep

equipment in good condition.

• Never tamper with safety devices.

Check their proper operation regularly.

• Keep machine free of grass, leaves, or other debris build-up. Clean oil or fuel

spillage. Allow machine to cool before storing.

• Stop and inspect the equipment if you strike an object. Repair, if necessary, before restarting.

• Never attempt to make wheel height adjustments while the engine (motor) is running.

• Grass catcher components are subject to wear, damage, and deterioration, which could expose moving parts or allow objects to be thrown. Frequently

check components and replace with manufacturer's recommended parts,

when necessary.

• Mower blades are sharp and can cut.

Wrap the blade(s) or wear gloves, and

use extra caution when servicing them.

• Do not change the engine governor setting or overspeed the engine.

These accessorieswere availablewhen thislawn mowerwas produced. They are not

shipped with your mower. They are alsoavailableat mostSears retailoutletsand service

centers. Most Sears storescan also orderrepairpartsfor you,whenyou providethemodel

numberofyourlawnmower. Some oftheseaccessoriesmay notapplyto yourlawnmower.

LAWN MOWER PERFORMANCE

CLIPPING DEFLECTOR

FOR REAR DISCHARGE LAWN MOWERS

GRASS CATCHERS

FOR

REAR DISCHARGE

LAWN MOWERS

LAWN MOWER MAINTENANCE

MUFFLERS

BELTS BLADES

MULCHER K_S

FOR

SIDE DISCHARGE

GRASS CATCHERS

LAWN MOWERS

AIR FILTERS

BLADE ADAPTERS WHEELS

STABILIZER

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 corners of carton and lay end panel down flat.

3. Remove all packing materials except padding between upper and lower

handle and padding holding operator presence control bar to upper handle.

4. Roll lawn mower out of carton and check carton thorougly for additional

loose parts.

HOW TO SET UP YOUR LAWN

MOWER

TO UNFOLD HANDLE IMPORTANT: Unfold handle carefully so

as not to pinch or damage control cables.

1. Raise handles until lower handle section locks into place in mowing

position.

2. Remove protective padding, raise upper handle section into place on

lower handle and tighten both handle knobs.

3. Remove handle padding holding

operator presence control bar to

upper handle.

Your lawn mower handle can be adjusted for your mowing comfort. Refer to UAD-

JUST HANDLE" in the Service and Adjustments section of this manual.

Operator I control bar

Mowing position

Lower handle

TO INSTALL ATTACHMENTS Your lawn mower was shipped ready to

be used as a mulcher. To convert to bagging, see "TO CONVERT MOWER" in

the Operation section of this manual).

KNOWYOUR LAWN MOWER

READ THIS OWNER'S MANUAL AND ALL 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.

A I' 1

CAUTION ENGINE ENGINE FAST SLOW CHOKE FUEL OIL DANGER, KEEP HANDS

OR WARNING ON OFF AND FEET AWAY

"Operator presence control bar

Drive control lever

Starter handle'

Grass catcher

Engine oil cap with dipstick

Housing

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

Handle knob

Gasoline filler cap

Air filter

cover

eel adjuster (on each wheel)

MEETS CPSC SAFETY REQUIREMENTS Sears rotary walk-behind power lawn mowers conform to the safety standards of the

American National Standards Institute and the U.S. Consumer Product Safety Commis- sion. The blade turns when the engine is running.

Operator presence control bar - must

be held down to the handle to start the

engine. Release to stop the engine.

Primer - pumps additional fuel from the carburetor to the cylinder for use when starting a cold engine.

Starter handle - used for starting the engine.

Drive control lever - used to engage power-propelled forward motion of lawn

mower.

The operation of any lawn

mower can result in foreign

objects thrown into the

eyes, which can result in severe eye damage.

Always wear safety glasses or eye shields while operating your lawn mower

or performingany adjustments or repairs. We recommend standard safety glasses

or a wide vision safety mask worn over spectacles.

HOWTO USE YOUR LAWN MOWER

ENGINE SPEED

The engine speed was set at the factory for optimum performance. Speed is not

adjustable. ENGINE ZONE CONTROL

ACAUTION: Federal regulations require an engine control to be installed on this

lawn mower in order to minimize the risk

of blade contact injury. Do not under any 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.

DRIVE CONTROL

• Self-propelling is controlled by holding

the operator presence control bar down to the handle and pushing the drive control lever forward until it clicks; then

releasing the lever.

• Forward motion will stop when the

operator presence control bar is released. To 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.

)resence control bar Drive

/_\\ control

TO ADJUST CUTFING 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, 9-position adjusters (if so equipped)

allow lever to be positioned between the

plate tabs.

LOWER WHEELS FOR HIGH CUT i

_ Plate tab _k-/_l_"

RAISE WHEELS FOR LOW CUT Lever

TO CONVERT MOWER

Your lawn mower was shipped ready to be used as a mulcher. To convert to bagging:

• Lift rear door of the lawn mower and place

the grass catcher frame hooks onto the door pivot pins.

• To convert to mulching operation, remove grass catcher and close rear door.

ACAUTION: Do not run your lawn mower without rear door closed, clipping

deflector or approved grass catcher in place. Never attempt to operate the lawn

mower with the rear door removed or

prepped open.

Pivot " Rear Grass

catcher

handle

Catcher frame hool_

TO ENGAGE DRIVE

DRIVE CONTROL

CONTROL DISENGAGED 7

TO EMPTY GRASS CATCHER

1. Uft 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

handle

Bag handle

BEFORE STARTING ENGINE ADD OIL

Your lawnmower is shipped without oil in the engine. For type and grade of oil to use, see "ENGINE" in the Maintenance section of this manual.

_1_CAUTION: DO NOT overfill engine with oil, or it will smoke on startup.

1. Be sure lawnmower is level and area around oil fill is clean.

2. Remove oil dipstick from oil fill spout. Make sure that rim of spout is clean.

3. You receive a container of oil with the

unit. Slowly pour 3/4 (15 oz.) of the oil

from the container down the oil fill spout into the engine.

4. Wait one minute to allow oil to settle.

Insert and tighten dipstick, then remove it to check oil level.

5. Continue adding small amounts of oil

and rechecking the dipstick until it reads full. DO NOT overfill, or engine

will smoke on startup.

6. Always be sure to retighten oil dipstick

before starting engine.

• Check oil level before each use. Add

oil if needed. Fill to full line on dipstick.

• Change the oil after every 25 hours of

operation or each season. You may need to change the oil more often

under dusty, dirty conditions.

ADD GASOLINE

• Fill fuel tank to bottom of tank filler

neck. Do not overfill. 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.

CAUTION: Wipe off any spilled oil or

fuel. Do not store, spill or use gasoline

near an open flame.

• i, CAUTION: 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.

- Gasoline filler cap

Engine

oil cap

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.

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 end engine will not start. If you do flood engine, wait a few minutes

before attempting to start and do not repeat priming steps.

MOWING TIPS

• Under certain conditions, such as very

tall grass, it may be necessary to raise the height of cut to reduce pushing

effort and to keep from overloading the engine and leaving clumps of grass

clippings. It may also be necessary to

reduce ground speed and/or run the 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 MOWING TIPS IMPORTANT: For best performance,

keep mower housing free of built-up grass and trash. See "CLEANING" in the

Maintenance section of this manual.

• The special mulching blade will recut

the grass clippings many times and reduce them in size so that as they fall

onto the lawn they will disperse into the grass and not be noticed. Also, the

mulched grass will biodegrade quickly

to provide nutrients for the lawn. Always mulch with your highest engine

(blade) speed as this will provide the best recutting action of the blades.

• Avoid cutting your lawn when it is wet. Wet grass tends to form clumps and

interferes with the mulching action. The best time to mow your lawn is the eady

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 grass, reduce your

width of cut by overlapping previously cut path and mow slowly.

MAXI_

• 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.

MA,NTENANCESC.EDULE

F'LL 'N DATES /__'l _:_'J,_

RE O RSE.V,CE SERWCEDATES

Check for Loose Fasteners ql/ If

Clean/Inspect Grass Catcher (If Equipped) I_ _

a Clean Lawn Mower

Clean Under Drive Cover

W IPower-Propelled Mowers) I_Check drive belt/pulleys

i_ B_

R Check/Sharpen/Replace Blade $

(Power-PropelledMowers)

LubricationChart If

Clean Batte_//Recharge IElectric Start Mowers! b/ 1_4

E Check Engine Oil Level qp_ I

N Change Engine Oil I_1.=

G Clean Air Filter I_ =

_ Inspect Muffler

Clean or Replace Spark Plug

E ReplaceAirFilterPaperCartridge I/2

1 - Change more often when operating under a heavy load or in high ambient temperatures. 2 -Service rnorooften when operating in dirtyor dusty conditions.

3 - Replace blades more often when mowing in sandy soil.

4-Cha,_e48hoursater_ofeea,on. LUBRICATION CHART

GENERAL RECOMMENDATIONS The warranty on this lawn mower does

not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain mower as instructed in this manual.

Some adjustments will need to be made periodically to properly maintain your

unit. All adjustments in the Service and

Adjustments section of this manual should be checked at least once each

season.

• Once a year, replace the spark plug, clean or replace air filter element and

check blade for wear. A new spark plug and clean/new air filter element

assure proper air-fuel mixture and help your engine run better and last longer.

• Follow the maintenance schedule in this manual.

BEFORE EACH USE

1. Check engine oil level.

2. Check for loose fasteners.

LUBRICATION Keep unit well lubricated (See "LUBRI-

CATION CHART").

(_) Handle bracket mounting pins (!) Spray lubricant

(_ See "ENGINE" in Maintenance section.

(!) Wheel adjuster

wheel)

(!)Brake

door hinge

IMPORTANT: Do not oil or grease plastic wheel bearings. Viscous

lubricants will attract dust and dirt that

will shorten the life of the self-lubricat-

ing bearings. If you feel they must be lubricated, use only a dry, powdered

graphite type lubricant sparingly.

spring

bracket

ine oil

Rear

PRODUCT SPECIFICATIONS

Serial number:

Date of purchase: Gasoline capacity / type: 1.5 quarts (unleaded regular)

Oil type (API-SF-SJ): SAE 30 (above 32°F); SAE 5W-30 (below 32°F)

Oil capacity: 20 ounces Spark plug (gap: .045") Champion RJ19LM4

Blade bolt torque: 35-40 ft. Ibs.

• The model and serial numbers will be found on a decal on the rear of the mower housing. Record both serial number and date of purchase in space provided above.

LAWNMOWER

Always observe safety rules when perform-

ing any maintenance.

TIRES

• Keep tires free of gasoline, oil, or insect control chemicals which can harm rubber.

• Avoid stumps, stones, deep ruts, sharp objects and other hazards that may cause tire damage.

BLADE CARE

For best results, mower blade must be kept sharp. Replace bent or damaged

blades.

TO REMOVE BLADE

1. Disconnect spark plug wire from spark plug and place wire where it cannot

come in contact with spark plug.

2. Turn lawn mower on its side. Make sure air filter and carburetor are up.

3. Use a wood block between blade and mower housing to prevent blade from

turning when removing blade bolt. NOTE: Protect your hands with gloves and/or wrap blade with heavy cloth.

4. Remove blade bolt by turning counter- clockwise.

5. Remove blade and attaching hard- ware (bolt, lock washer and hardened washer).

NOTE: Remove the blade adapter and

check the key inside hub of blade adapter. The key must be in good condi-

tion to work properly. Replace adapter if damaged.

TO REPLACE BLADE

1. Position the blade adapter on the engine crankshaft. Be sure key in

adapter and crankshaft keyway are aligned.

2. Position blade on the blade adapter aligning the two (2) holes in the blade

with the raised lugs on the adapter.

3. Be sure the trailing edge of blade

(opposite sharp edge) is up toward

the engine.

4. Install the blade bolt with the lock washer and hardened washer into

blade adapter and crankshaft.

5. Use block of wood between blade and

lawn mower housing and tighten the blade bolt, turning clockwise.

• The recommended tightening torque is

35-40 ft. Ibs.

IMPORTANT: Blade bolt is grade 8 heat

treated. TO SHARPEN BLADE

NOTE: We do not recommend sharpen- ing 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.

Blad_ Crankshaft

Blade

Blade bolt Hat shaft

washer Trailing edge Blade adapter

GRASS CATCHER

• The grass catcher may be hosed with water, but must be dry when used.

• Check your grass catcher often for damage or deterioration. Through

normal use it will wear. If catcher needs

replacing, replace only with a manufac-

turer approved replacement catcher.

Give the lawn mower model number

when ordering.

DRIVE WHEELS Check front drive wheels each time

before you mow to be sure they move freely.

The wheels not turning freely means trash, grass cuttings, etc. are in the drive

wheel area and must be cleaned to free drive wheels.

If necessary to clean the drive wheels, be sure to clean both front wheels.

1. Remove hubcaps, hairpin cotters and washers.

2. Remove wheels from wheel adjusters.

3. Remove any trash or grass cuttings

from inside the dust cover, pinion and/ or drive wheel gear teeth.

4. Put wheels back in place. NOTE: If after cleaning, the drive wheels do not turn freely, contact a Sears or other qualified service center. GEAR CASE

• To keep your drive system working properly, the gear case and area around the drive should be kept clean

and free of trash build-up. Clean under

the drive cover twice a season.

• The gear case is filled with lubricant to

the proper level at the factory. The only time the lubricant needs attention is if

service has been performed on the gear case.

• If lubricant is required, use only Texaco Starplex Premium 1 Grease, Part No.

750369. Do not substitute.

ENGINE

LUBRICATION Use only high quality detergent oil rated

with API service classification SF-SJ. Select the oil's SAE viscosity grade

according to your expected operating temperature.

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. 13ghten 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.

1. Disconnect spark plug wire from spark plug and place wire where it cannot

come in contact with spark plug.

2. Remove engine oil cap; lay aside on a clean surface.

3. Tip lawn mower on its side as shown and drain oil into a suitable container. Rock lawn mower back and forth to

remove any oil trapped inside of engine.

4. Wipe off any spilled oil from lawn mower or side of engine.

5. Fill engine with oil. (See "ADD OIL" in the Operation section of this manual).

6. Reconnect spark plug wire to spark plug.

Container

SAlE VISCOSITY' GRADES

TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OiL CHANGE

o ,o _ 3o

AIR FILTER Your engine will not run properly and may

be damaged by using a dirtyair filter. Replace the air filter every 100 hours of

operation or every season, whichever occurs first. Service air cleaner more

often under dusty conditions. Do not wash air filter.

TO CHANGE AIR FILTER

1. Remove the air filter by turning clockwise to the stop and pull away

from collar.

2. Remove filter from inside of cover.

3. Clean the inside of the cover and the

collar to remove any dirt accumula- tion.

4. Insert new filter into cover.

5. Put air filter cover and filter into collar aligning the tab with the slot.

6. Push in on cover and turn counter-

clockwise to tighten.

Co lar

Clip

Slot

Air filter J

Air filter cover

TURN CLOCKWISE

TURN

COUNTER-

CLOCKWISE TO TIGHTEN

MUFFLER Inspect and replace corroded muffler as it

could create a fire hazard and/or dam- age.

SPARK PLUG Replace spark plugs at the beginning of

each mowing season or after every 100

hours of operation, whichever occurs first.

Spark plug type and gap setting are shown in "PRODUCT SPECIFICATIONS"

in Maintenance section of this manual.

CLEANING

IMPORTANT: For best performance, keep mower housing free of built-up

grass and trash. Clean the underside of your mower after each use.

_I,CAUTION: Disconnect spark plug wire from spark plug and place wire where it

cannot come in contact with the spark plug.

• Clean the underside of your lawn mower by scraping to remove build-up

of grass and trash.

• Clean engine often to keep trash from accumulating. A clogged engine runs

hotter and shortens engine life.

• Keep finished surfaces and wheels free of all gasoline, oil, etc.

• We do not recommend using a garden hose to clean lawn mower unless the

electrical system, muffler, air filter and carburetor are covered to keep water

out. Water in engine can result in shortened engine life.

CLEAN UNDER DRIVE COVER Clean under drive cover at least twice a season. Scrape underside of cover with

putty knife or similar tool to remove any build-up of trash or grass on underside of

drive cover.

AWARNING: To avoid serious injury,

before performing any service or adjust- ments:

1. Release control bar and stop engine.

2. Make sure the blade and all moving parts have completely stopped.

3. Disconnect spark plug wire from spark plug and place where it cannot come in contact with plug.

LAWN MOWER

TO ADJUST CUTTING HEIGHT

See 'q'O ADJUST CUTTING HEIGHT" in the Operation section of this manual.

REAR DEFLECTOR

The rear deflector, attached between the

rear wheels of your mower, is provided to

minimize the possibility that objects will be thrown out of the rear of the mower

into the operator's mowing position. If the

deflector becomes damaged, it should be

replaced.

TO REMOVE DRIVE BELT

1. Remove drive cover. Remove belt

from geamase pulley by pushing

down on pulley and rolling belt off it.

2. Turn lawn mower on its side with air

filter and carburetor up.

3. Remove blade.

4. Remove debris shield.

5. Remove belt from engine pulley on

crankshaft.

TO REPLACE DRIVE BELT

1. Install new belt on engine pulley.

2. Reinstall debris shield and blade.

3. Return mower to upright position.

4. Install new belt on gearcase pulley,

5. Reinstall drive cover. NOTE: Always use factory approved belt

to assure fit and long life.

Drive

cover Belt

TO ADJUST HANDLE The upper handle may be adjusted to

four (4) different height positions.

1. Loosen both handle knobs only enough to allow the upper handle to

pivot to the desired adjustment position.

2. Tighten both handle knobs securely.

Handle

knob

TO ASSEMBLE GRASS CATCHER

1. Put grass catcher frame into grass bag with rigid part of bag on the bottom.

Make sure the frame handle is outside of the bag top.

2. Slip vinyl bindings over frame.

NOTE: If vinyl bindings are too stiff, hold them in warm water for a few minutes. If

bag gets wet, let it dry before using. ACAUTION: Do not run your lawn

mower without clipping deflector or approved grass catcher in place. Never

attempt to operate the lawn mower with the rear door removed or prepped open.

Catcher frame

handle

Frame

opening

ENGINE

ENGINE SPEED

Your engine speed has been factory set.

Do not attempt to increase engine speed

or it may result in personal injury. If you

believe that the engine is running too fast

or too slow, take your lawn mower to a

Sears or other qualified service center for repair and adjustment.

CARBURETOR

Your carburetor has a non-adjustable fixed main jet for mixture control. If your

engine does not operate properly due to suspected carburetor problems, take your

lawn mower to a Sears or other qualified

service center for repair and/or adjust-

ment. IMPORTANT: Never tamper with the

engine governor, which is factory set for proper engine speed. Overspeeding the

engine above the factory high speed

setting can be dangerous. If you think the engine-governed high speed needs adjusting, contact a Sears or other

qualified service center, which has proper equipment and experience to make any

necessary adjustments.

+ 30 hidden pages

Craftsman 917378422 Owner’s Manual

Specifications and Main Features

Frequently Asked Questions

User Manual