Craftsman 917378780 Owner’s Manual

Owner's Manual

ICRIIFTSMAN°I

ROTARY LAWN MOWER

7.0 Horsepower

Power-propelled

21" Rear discharge

Model No.

917.378780

CAUTION:

Read and follow all

Safety Rulesand Instructions beforeoperatingthis equipment

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

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.

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

Service and Adjustments .............. 13-15

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

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

Repair Parts .................................. 35-43

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

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

This Warranty does not cover:

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

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

contained in the owner's manual.

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

while this product is 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, Ulinois 60179

IMPORTANT: This cutting machine is capable of amputating hands and feet and throwing objects. Failure to observe the following safety instructionscould result in serious injury or death.

ALook for this symbol to point out

important safety precautions. It means

CAUTION!!! BECOMEALERT!!I YOUR SAFETY IS INVOLVED.

_I_WARNING: Battery posts, terminals and

related accessories contain lead and lead compounds, chemicals known to the

State of California to cause cancer and birthdefects or other reproductive harm.

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

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.

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.

I.GENERAL OPERATION

• Read,understand,andfollow 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.

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 trim excessively steep slopes.

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

Ill. CHILDREN

Tragic accidents can occur if the operator

is not alert to the presence of children.

Children are often attracted to the

machine and the mowing activity. Never

assume that children will remain where you last saw them.

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

responsible adult.

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

• Before and while walking backwards,

look behind and down for small

children.

• Never allow children to operate the

machine.

• Use extra care when approaching blind

corners, shrubs, trees, or other objects that may obscure vision.

IV. SERVICE

• Use extra care in handling gasoline

and other fuels. They are flammable and vapors are explosive.

-Use only an approved container.

- Never remove gas cap or add fuel

with the engine running. Allow

engine to cool before refueling. Do

not smoke.

- Never refuel the machine indoors.

- Never store the machine or fuel

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

• Never run a machine inside a closed • area.

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

Disconnect the spark plug wire, and keep the wire away from the plug to

prevent accidental starting. •

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

equipment in good condition.

• Never tamper with safety devices. Check their proper operation regularly.

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

spillage. Allow machine to cool before storing.

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

before restarting. Never attempt to make wheel height

adjustments while the engine (motor) is running.

Grass catcher components are subject to wear, damage, and deterioration,

which could expose moving parts or allow objects to be thrown. Frequently

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 accessories were available when this lawn mower was produced. They are not shipped with your mower. They are also available at most Sears retail outlets and service centers. Most Sears stores can also order repair parts for you, when you provide the model

number of your lawn mower. Some of these accessories may not apply to your lawn mower.

LAWN MOWER PERFORMANCE

CLIPPING DEFLECTOR

FOR REAR DISCHARGE LAWN MOWERS

GRASS CATCHERS

FOR

REAR DISCHARGE

LAWN MOWERS

LAWN MOWER MAINTENANCE

MUFFLERS AIR FILTERS

BELTS BLADES BLADE ADAPTERS

MULCHER KITS

GRASS CATCHERS

LAWN MOWERS

SIDE DISCHARGE

FOR

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.

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 "AD- JUST HANDLE" in the Service and

Adjustments section of this manual. Operator I

control bar Upper handl UP

LIFT UI

Mowing position

Lower handle

TO INSTALL ATrACHMENTS

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).

KNOW YOUR 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.

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

OR WARNING ON OFF AND FEET AWAY

Operator presence control bar

Throttle

Drive control lever

Starter handle

Handle knob

oil cap with dipstick

Grass catcher

Muffler

Housing

cover

Primer adjuster (on each wheel)

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

Starter handle - used for starting the engine.

Primer- pumps additional fuel from the

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

mower. Throttle control - used for starting the engine and allows you to select either

FAST or SLOW engine speed.

carburetor to the cylinder for use when starting a cold engine.

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 performing any 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 is controlled by a

throttle control located on the side of the upper handle. FAST position is for

starting, normal cutting, trimming and better grass bagging. SLOW position is

for light cutting, trimming and fuel economy.

SLOW

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.

Operator )resence control bar Drive

control

FAST

I II I | I

II #

/ I

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

TO ENGAGE

DRIVE CONTROL

CONTROL

DISENGAGED

TO ADJUST cu'n'ING 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.

RAISE WHEELS FOR LOW CUT Lever

TOCONVERTMOWER

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 propped open.

Pivot pins Rear

Catcher frame hool__

TO EMPTY GRASS CATCHER

1. Lift up on grass catcher using the frame handle.

2. Remove grass catcher with clippings from under lawn mower handle.

3. Empty clippings from bag using both frame handle and bag handle.

NOTE: Do not drag the bag when emptying; it will cause unnecessary wear.

Bag handle

Grass

catcher

handle

Grass

catcher

frame

handle

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 starfup.

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,

re.gular unleaded gasoline with a ram=mum of 87 octane. Do not mix oil

with gasoline. Purchase fuel in quantities that can be used within 30

Adays to assure fuel freshness.

CAUTION: Wipe off any spilled oil or

fuel. Do not store, spill or use gasoline

near an open flame.

A 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.

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. A 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.

oil cap

oline filler 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. Move throttle control lever to FAST position.

3. Hold operator presence control bar down to the handle and pul! starter

handle quickly. Do not allow starter rope to snap back.

TO STOP ENGINE

• To stop engine, release operator presence control bar.

NOTE: In cooler weather it may be necessary to repeat priming steps. In

warmer weather over priming may cause flooding and engine will not start. If you

do flood engine, wait a few minutes

before attempting to start and do not repeat priming steps.

MOWING TIPS

• Under certain conditions, such as very tall grass, it may be necessary to raise

the height of cut to reduce pushing effort and to keep from overloading the

engine and leaving clumps of grass clippings. It may also be necessary to

reduce ground speed and/or run the

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.

• 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 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 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.

MAINTENANCE SCHEDULE ._

FILLINDATES _*"/'9..-_.,_I

REGULAR SERVICE

Check for Loose Fasteners I,f Clean/Inspect Grass Catcher (If Equipped) If If

Clean Lawn Mower

Power-Propelled Mowers)

O Clean Under Drive Cover

Check drive belt,/pulleys

RE Power-Propelled Mowers)

Check/Sharpen/Replace Blade

Lubrication Chart

Clean Battery/Recharge

Electric Start Mowerst

E Check Engine Oil Level

N Change Engine Oil

G Clean Air Filter

I Inspect Muffler

N clean or Replace Spark Plug

E Replace Air Filter Paper Cartridge

1 - Change more often when operating under a heaW load or in high ambient temperatures. 2 - Service more often when operating in dirty or dusty condilions,

3 - Replace blades more often when mowing in sar_y soil. 4 - Charge 48 hours at end of season,

t/M

1_1,2

V'2

RV,OE

V°2

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 adjust-

ments will need to be made pedodically 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").

LUBRICATION CHART

eadl_.._ (_) Wheel

_, ;lineoil

l/ I\

-- -- J Rear door

(!) Handle bracket mounting pins

(_) Spray lubricant

(_) See "ENGINE" in 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-lubricat-

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

graphite type lubricant sparingly.

juster (on ch wheel)

hinge

PRODUCT SPECIFICATIONS

Serial number: Date of purchase:

Gasoline capacity / type: 1.6 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: .020") Champion RC12YC

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

LAWN MOWER 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.

Crankshaft

Blade

Blade shaft

bolt

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 whee[s 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.

SAE VISCOSITY GRADES

0 3O 8O

-20 .10 0 t0 20 40

TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE

NOTE: Although multi-viscosity oils (5W30, 10W30 etc.) improve starting in

cold weather, these multi-viscosity oils

will result in increased oil consumption

when used above 32°R Check your

engine oil level more frequently to avoid possible engine damage from running

low on oil. Change the oil after every 25 hours of

operation or at least once a year if the

lawn mower is not used for 25 hours in

one year. Check the crankcase oil level before

starting the engine and after each five (5) hours of continuous use. Tighten oil plug

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.

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.

Container

AIR FILTER

Your engine will not run properly using a dirty air filter. Clean the foam pre-cleaner

after every 25 hours of operation or every season. Replace paper cartridge every

100 hours of operation or every season,

whichever occurs first. Service air

cleaner more often under dusty condi-

tions.

1. Loosen screws and remove cover.

2. Carefully remove cartridge.

3. Clean by gently tapping on a flat surface. If very dirty, replace cartridge.

_LCAUTION: Petroleum solvents, such

as kerosene, are not to be used to clean

cartridge. They may cause deterioration of the cartridge. Do not oil cartridge. Do not

use pressurized air to clean or dry

cartridge.

4. Install cartridge, then replace cover.

Base

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. _,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.

_I=WARNING: 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 "TO ADJUST CUTTING HEIGHT" in

the Operation section of this manual. REAR DEFLECTOR

The rear deflector, attached between the rear wheels of your mower, is provided to

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

into the operator's mowing position. If the deflector becomes damaged, it should be

replaced.

TO REMOVE DRIVE BELT

1. Remove drive cover. Remove belt from gearcase pulley by pushing

down on pulley and rolling belt off it.

2. Turn lawn mower on its side with air filter and carburetor up.

3. Remove blade.

4. Remove debris shield.

5. Remove belt from engine pulley on

crankshaft.

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 geamase pulley.

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

to assure fit and long life.

Drive

cover Belt

TO ADJUST HANDLE The handle can be mounted in a high or

tow position. The mounting holes in the bottom of lower handle are off center for

raising or lowering the handle.

1. Remove upper handle and all parts attached to lower handle.

2. Remove hairpin cotters from lower handle bracket mounting pin.

3. Squeeze lower handle in to remove it from mounting pins.

4. Turn lower handle over to raise or lower handle.

5. Squeeze lower handle in and position holes onto mounting pins on handle

bracket.

6. Reassemble upper handle and all

parts removed from lower handle.

Mowing

Hairpin

Mounting-

LOW POSITION HIGH POSITIO

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.

_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

FralT

openin

+ 30 hidden pages

Craftsman 917378780 Owner’s Manual

Specifications and Main Features

Frequently Asked Questions

User Manual