Craftsman 917.378590 User Manual

SEARS

/:RBFTZ

®

MODEL NUMBER 917.378590

oAssembly

• Operation

• Customer
Responsibilities

• Service

OWNER'S MANUAL

,,,--t _,,d,__.d ,tj d,d dd_,,,.*t d L,w,,,_

• Repair Parts

Caution:

Read and Follow

all Safety Rules
and Instructions

Before Operating

This Equipment

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III II

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SAFETY RULES

PLUGTO PREVENTACCIDENTALSTARTINGWHENSETTING UP,TRANSPORTING,ADJUSTINGORMAKING
CAUTION:ALWAYSDISCONNECTSPARKPLUGWIREANDPLACEWIREWHEREITCANNOTCONTACTSPARK

REPAIRS IMPORTANT

SAFETY STANDARDSREQUIRE OPERATORPRESENCECONTROLSTO MINIMIZETHERISK OFINJURY. YOURUNIT ISEQUIPPED WITH
SUCH CONTROLS. DO NOT ATTEMPT TO DEFEAT THE FUNCTION OF THE OPERATORPRESENCE CONTROLS UNDER ANY CIRCUM-

STANCES.

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 de-
scribed 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 notuse accessory attachments that are not recommended
by the manufacturer. Use of such attachments may be

hazardous_

The blade turns when the engine is running.

PREPARATION:

• Always thoroughly check the area to be mowed and clear it of
all stones, sticks, wires, bones, and other foreign objects.

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 mower when barefoot or

wearing open sandals. Wear only solid shoes with good
traction when mowing,

• Check fuel +_nk before startina engine. Oo not fitf _.as t_nk

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 firmhold

on the handles and walk.
Do not put hands or feet near or under rotating parts. Keep

clear of the discharge opening at alf times.

Always step the engine whenever you leave or are not using
your mowe r,orbefore 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 discon nect the spa rk plug

wire and keep it away from the spark plug to prevent
accidental starting.

• Do not continue to run yourmower if you hit a foreign object.

Follow the procedure outlined above, then repair any dam-
age before restarting and operating you mower.

• Do not change the governor settings or overspeed the
engine. Engine damage or personal injury may result,

• Do not operate your mower if itvibrates abnormally. Exces-
sive vibration is an indication of damage; stop the engine,

safely check for the cause ofvibration and repair as required.

• Do not run the engine indoors. Exhaust fumes are danger-

ous.

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 blaae 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 insafe working condi-
tion.

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 coot 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 ignitionsource

such as a hot water heater, space heater, clothes dryer, etc.

LOOK FOR THIS SYMBOL TO POINT OUT IMPORTANT SAFETY PRECAUTIONS.
IT MEANS - ATTENTION!!! BECOME ALERT!!! YOUR SAFETY IS INVOLVED.

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CONGRATULATIONS on your purchase ofa Sears Lawn

Mower. It has been designed, engineered and manufac-
tured to give you the best possible dependability and
performance.

Should you experience any problem you cannot easily

remedy, please contact your nearest Sears Authorized
Service Center/Department. We have competent, well-

trained technicians and the proper tools to service or repair

this lawn mower.

Please read and retain this manual. The instructions will

enable you to assemble and maintain your lawn mower
properly. Always observe the "SAFETY RULES".

MODEL
NUMBER 917.378590

SERIAL
NUMBER

DATEOFPURCHASE

THE MODELAND SERIAL NUMBERSWtLL BEFOUND
ON A DECAL A-I-rACHED TO THE REAR OF THE
LAWN MOWER HOUSING

YOUSHOULDRECORDBOTHSERIALNUMBERAND
DATE OF PURCHASE AND KEEP IN A SAFE PLACE

FOR FUTURE REFERENCE.

PRODUCT SPECIFICATIONS

HORSEPOWER: 5.5
DISPLACEMENT: 9.0 CU.IN.
GASOLINECAPACITY 1.6 QUARTS

ANDTYPE: UNLEADEDREGULAR
OILTYPE(APFSG): SAE 30 (ABOVE32°F)

SAE 5W-30(below 32°F)

OIL CAPACITY: 20 OZS.
SPARKPLUG: CHAMPION RJ19-LM

(GAP: .030") STD361458
VALVECLEARANCE: INTAKE: .008"

EXHAUST: .008"

SOLID STATE IGNITION

AIRGAP: .0125IN.
BLADEBOLTTORQUE: 35-40 FT.LBS.

MAINTENANCE AGREEMENT

A Sears Maintenance Agreement is available on this product. Contact your nearest Sears store for details.

CUSTOMER RESPONSIBILITIES

• Read and observe the safety rules.

• Follow a regular schedule inmaintaining, caring for and using your lawn mower.

• Follow the instructions under "Customer Responsibilities" and "Storage" sections of this owner's manual.

LIMITED TWO YEAR WARRANTY ON CRAFTSMAN POWER MOWER

For two years from date of purchase, when this Craftsman Lawn Mower is maintained, lubricated, and tuned up
according to the operating and maintenance instructions in the owner's manual, Sears will repair free of charge any

defect in material or workmanship.
If this Craftsman Lawn Mower is used for 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 INTHE UNITED STATES. THIS WARRANTY APPLIES ONLYWHILE

THIS PRODUCT IS IN USE INTHE 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

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TABLE OF CONTENTS

SAFETY RULES ............................................................ 2

PRODUCT SPECIFICATIONS ....................................... 3

CUSTOMER RESPONSIBILITIES ....................... 3, 9-11

WARRANTY ................................................................... 3

ASSEMBLY ................................................................... 5

OPERATION .................................................................. 6

INDEX

A

Accessories ..................................... 5

Adjustments:

Carburetor .............................. 14

Drive Control Cable ................ 12

Engine Speed ......................... 14

Handle Height ......................... 13

Height of Cut ............................. 7

Air Filter:

Replacement .......................... 11

Service .................................... 11

Assembly ......................................... 5

B

Blade:

Sharpening ............................. 10

Replacement .......................... 10

C

Controls:

Drive Control ............................. 6

Engine Zone Control ................. 6

Engine Speed Control .............. 6

Operator Presence

Control Bar ............................... 6

Customer Responsibilities.....3, 9-11

Air Filter .................................. 11

Blade Care/Replacement ....... 10

DriveWheels .......................... 10

Engine .................................... 11

Lubrication.............................. 11

Spark Plug .............................. 11

Cutting Levels ................................. 7

Engine:

Air Filter .................................. 11

Oil Change .............................. 12

Oil Level .................................. 12

Oil Type .................................. 12

Starting ..................................... 8

Stopping ................................... 8

Storage ................................... 15

Fuel:

Capacity .................................... 3

Storage ................................... 15

Type .......................................... 8

Handle Adjustment:

Assembly .................................. 5

Cutting Height ........................... 7

Lubrication:

Engine .................................... 11

Lawn Mower ............................. 9

Maintenance Agreement ................. 3

Maintenance Schedule ................... 9

Mowing Tips .................................... 8

Oil:

Engine .................................... 11

Storage ................................... 15

MAINTENANCE SCHEDULE ........................................ 9

SERVICE AND ADJUSTMENTS ................................. 12

STORAGE .................................................................... 15

TROUBLESHOOTING ................................................. 27

REPAIR PARTS- LAWN MOWER ........................ 16-20

REPAIR PARTS- ENGINE .................................... 21-26

PARTS ORDERING/SERVICE ................ BACK COVER

E

F

H

L

M

O

Operation:

Drive Control ............................. 7

Engine Control .......................... 7

Grass Catcher ........................ 10

Mower ....................................... 7

Operator Presence

Control Bar ............................... 7

Options:

Accessories .............................. 5

R

Repair Parts:

Engine ............................... 21-26

Lawn Mower ...................... 16-20

Responsibilities, Customer ....3, 9-11

s

Safety Rules .................................... 2

Service and Adjustments .............. 12

Carburetor .............................. 14

DischargeGuard .................... 12

Drive Belt................................ 12

Engine Speed ......................... 14

Handle .................................... 13

Spark Plug..................................... 11

Specifications.................................. 3

Speed Control:

Engine .................................... 14

Starting the Engine .......................... 8

Stopping the Engine ........................ 8

Storage .......................................... 15

T

Trouble Shooting Chart ................. 27

W

Warranty .......................................... 3

4

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LAWN MOWER RIES

These accessories were available when thislawnmower was produced. 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.

ENGINE

SPARK PLUG MUFFLER AIR FILTER GAS CAN ENGINE OIL STABILIZER

...... •......... •I• iii i ii i i i IIHI,I Illll

LAWN MOWER PERFORMANCE

LAWN MOWER MAINTENANCE i

BELT

BLADE

MULCHER KIT

WHEELS

LAWN MOWER

COVER

.......... EMBLY

=llIHH I HJ==| Hm|HH I lll l IH II I I

Read these instructions and this :manual in its entirety _PPERATOR PRESENCE

before you attempt to assemble or operate your new lawn
mower. 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 opera-
tion 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 partsbag.

TO REMOVE LAWN MOWER FROM

CARTON

• Remove loose parts includedw!th mower.

• Cut down two end corners of carton and laYend panel

down flat. .....

• Remove all packing materials except padding between
upper and lower handle and padding holding opera*or

presence control bar to upper handle.

• Roll lawn mower out of carton and check carton thor-

oughly for additional loose parts. •

HOW TO SET UP YOUR LAWN

MOWER

TO UNFOLD HANDLE (See Fig. 1)

IMPORTANT: UNFOLD HANDLE CAREFULLY SO AS
NOT TO PINCH OR DAMAGE CONTROL CABLES.

CONTROL BAR

UPPER HANDLE

LIFT UP

LOWER HANDLE

Raise handles until lower handle section locks inte
place in mowing position.

Raise upper handle section into place on lower handle,
remove protective padding 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

5 Service and Adjustments section of this manual.

MOWING POSITION

FIG. 1

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KNOW YOUR LAWN MOWER

READ THIS OWNER'S MANUAL AND SAFEr/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.

OPERATOR PRESENCE

ZONE CONTROL CABLE

STARTER HANDLE

HANDLE KNOB

GASOLINE RLL CAP,

ENGINE SPEED
CONTROL LEVER

CONTROL BAR

DRIVE CONTROL LEVER

,ENGINE OIL CAP WITH DIPSTICK

: i¸

DRIVE COVER

DISCHARGEGUARD

H

WHEEL ADJUSTER .... HOUSING

(ON EACH WHEEL)

FIG. 2

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MEETS CPSC SAFETY REQUIREMENTS

Sears rotary walk-behindpower lawnmowers 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 -must be helddown
to the handle to start the engine. Release to stop the

engine.

STARTER HANDLE - usedfor starting the engine.

DRIVE CONTROL LEVER - used to engage power-pro-

PRIMER - pumps additional fuel from the carburetor to the

cylinder for use when starting a cold engine.
ENGINE SPEED CONTROL LEVER - locatedon the side
of the engine which allows you to select either fast (_)or

slow (_) engine speed ..........

pel!ed forward motion of lawn mower. ....

6

m,,HIHIIlll IIIllll III

ATION

HOW TO USE YOUR LAWN MOWER

ENGINE SPEED (See Fig. 3)

The engine speed iscontrolled bya lever locatedon the
side ofthe engine. Fast (_Bi)positionisfor startingengine,

normal cutting and better grass bagging. _Slow (-_m_)

positionis for light cuttingltr!mmingand fuel economy.

ENGINE ZONE CONTROL

risk of blade contact injury. Do not
under any circumstances attempt to

lawn mower in order to minimize the
defeat the function of the operator con-

trol. The blade turns when the engine is

running.

IIIIIIIUIIIII II iiiiiiiii iiiii i ii i/ i i iiiiiiiii i II

• Your lawn mower is equipped with an operator pres-
ence control bar which requires the operator to be
positioned behind the lawnmower handle to start and

operate the lawn mower.

DRIVE CONTROL (See Fig. 4)

° Self-propelling is controlledby holding the operator

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

release the lever.

• Forward motionwili stop whenthe operatorpresence
controlbar is released. To stopforward motionwithout

stopping engine,releasethe operatorpresencecontrol
bar slightly untl the :drive control disengages. Hold

operator presence control bar downto handleto con-
tinue mowingwithoutself-propelling, ':

• To keep drive controlengaged when turningcomers,
push down on handle and liftfront wheels off ground
whileturning lawn mower.

TO ADJUST CUTTING HEIGHT (See Fig. 5)

• Raisewheels for lowcutand lowerwheelsfor highcut.

• Wheels are set in lowcutfor shipping. Adjust cutting

height to suit your requirements. Medium position is
bestfor most lawns.

To change cutting height, squeeze adjusterlever to-

ward wheel. Move wheel up or down to suit your
requirements. Be sure all wheels are in the same

setting.

ENGINE SPEED CONTROL LEVER

lIVER

FIG. 3

OPERATOR PRESENCE
CONTROL BAR

CONTROL

TO ENGAGE DRIVE CONTROL
DRIVE CONTROL DISENGAGED

FIG. 4

LOWER WHEELS RAISE WHEELS
FOR HIGH CUT FOR LOW CUT

FIG. 5

7

BEFORE STARTING ENGINE

OIL (See Fig. 6)

Your lawn mower isshipped withoutoil inthe engine.

Be sure mower is level and area around oilfill is clean.

o

Remove engine oilcap w/dipstickand fillto the full line

on the dipstick.

• Use 20 ozs. of oi!. Fortypeandgradeofoiltouse, see
"ENGINE" in Customer Responsibilities section ofthis
manual.

• Pour oil slowly. Do not over fill.

• Check oil level before each use. Add oil if needed. Fill
to full line on dipstick.

• To read proper level, tighten engine oil cap each time.

• Reinstall engine oil cap and tighten.

= After the first two (2) hours of mowing, change the oil,

and every 25 hours thereafter. You may need to

change the oil more often under dusty, dirtyconditions.

GAS (See Fig, 6)

• Fillgasolinetank withfresh, clean, unleadedgasoline.

DO NOT USE PREMIUM GASOLINE. BE CAREFUL
NOT TO OVER FILL TANK.

WARNING: Experience ndicates that alcohol blended
fuels (called gasohol or using ethanol or methanol) can

attractmoisturewhich leadsto separationand 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 emptiedbefore stor-
age of 30 days or longer. Drain thefuel tank, start the

engine and let it run until fuel linesand carburetor are
empty. Use freshfuel next season. See Storage Instruc-

tions for additional information. Never use engine or
carburetor cleaner products in fuel tank or permanent

damage may occur.

TO START ENGINE

To start a cold engine, push primer three (3) times

before tryingto start. Use-.afirm push. Thisstep is not
usually necessary when startingan engine which has
already run for a few minutes.

Push engine speed controllever to fast (_) position.
Holdoperatorpresence controlbar downto thehandle

and pul!starter handle quickly. DO NOT allowstarter

rope tosnap back.

To STOP engine, release operator presence control

bar.

NOTE: In cooler weather it may be necessary to repeat

priming steps. Inwarmer 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.

GASOLINE RLLER CAP

FIG, 6

ENGINE OIL CAP
W/DIPSTICK

MOWING TIPS

• Undercertain conditions,suchas verytatt grass, itmay
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.

• 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 inthe fast (_) position,

• For side discharge !awn mowers, cutting in a counter-
clockwise direction, starting at the outside of the area
to be cut, spreads grass clippings more evenly and

puts Iess load on the engine. To keep clippings off of

walkways, flower beds, etc., make the first cuts in a
clockwise direction.

• Pores incloth grass catcherscan 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 airflow
and extend engine life.

8

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BILITIES

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MAINTENANCE SCHEDULE _ _ _ ___,,_o_ __ _O_

F,L,,NOATES

AS YOU COMPLETE

REGULAR SERVICE ............ E,,,,,,,,DATES

Check for,,Lo0se Fasteners b_'.... If

Clean/inspect Grass Catch'er(if Equipp.ed ) .. .. _ !_ if ....... tf ....

Inspect!Clean 'D'rive"Wheels

Clean Lawn Mower tk/ I_

(Self-Propelled Mowers) V'

R SharPen/aep.!ace.Mower Blade _ S

Lubrication Chart V' If ......

.........Ci'ean BatterylRecharge'

(EIe.ct.r.!cStart Mowers) If t_4

E ..Check Engine Oil Level :........ Ill/ ""

N Change Engine Oil .. tf I/1.2

G Clean.....Air Filter V'2

I lnspec.t Muff!er ..... .V'.

N Replace spa.rk. P!ug ....... t/'

!E Replace Air Filter Paper,,Cartridge ........................................ I/'2 .. '....

1 - Change mere often when operating under a heavy load er in high ambient temperatures.
2 - Service more often when operatfng _n dirty or dusty conditions,

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

4 - Charge 48 hours at end of season.

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 fiiterelement and checkblade forwear. A newspark

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 unit well lubricated (See "LUBRICATION CHART!').

LUBRICATION CHART

(_) WHEEL

ADJUSTER

!_ DISCHARGE

GUARD
HINGE PIN

/

(_ HANDLE BRACKET

MOUNTING PIN

(_) SPRAY LUBRICANT
(_ REFER TO CUSTOMER RESPONSIBILITIES "ENGINE"

SECTION,

IMPORTANT: DO NOT OIL OR GREASE PLASTIC WHEEL

BEARINGS. VISCOUS LUBRICANTS WILL ATTRACT

DUST AND DIRT THAT WtLL SHORTEN THE LIFE OF

THE SELF-LUBRICATING BEARINGS. IF YOU FEEL
THEY MUST BE LUBRICATED, USE ONLY A DRY,

POWERED GRAPHITE TYPE LUBRICANT SPARINGLY.

9

ENGINE OIL

i,i i i i i i ill,ll ,IIHII, ,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,, , ...................................

lUTIES

Ill ii I IIIIII II iii I I I ii iiiiii iii

LAWN MOWER

Always observe safety rules when performing any mainte-

nance.

TIRES

• Keep tires free of gasoline, oil, or insectcontrot chemi-

cals 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. Re-
place bent or damaged blades.

TO REMOVE BLADE (See Fig. 7)

• ::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 awood 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 counter-clockwise. Use

a 9/16' box or open-end wrench.

• 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 (See Fig. 7)

• 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 withthe Iockwasher 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: BLADEBOLT 1SGRADE 8 HEATTREATED.

NOTE: We do not recommend sharpening blade - but if
you do, be sure the blade is balanced.

TO SHARPEN BLADE

Care should be taken to keep the blade balanced. An
unbalanced blade will cause eventual damage to lawn

mower or engine.

• The bladecan be sharpened with afile or on agdnding

wheel. Do not attempt to sharpen whileonthe mower.

• To check blade balance, drive a nail into a beam or

:walt. Leave about one inch of the straight nail ex-

posed. 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.

BLADE
ADAPTER

KEY

BLADE

CRANK-
KEYWAY

\

LOCI( WASHER EDGE BLADE ADAPTER

TRAILING

FIG. 7

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 inthe drive wheel area and must becleaned tofree
drive wheels.

If necessary to clean the ddve wheels, check both front
wheels.

• Remove hubcaps, hairpin cotters and washers.

• Remove wheels from wheel adjusters.

• Remove any trash or grass cuttings from inside the
dust cover, pinionand!or drive wheel gear teeth.

• Put wheels back in place.

• If after cleaning, the drive wheels do not turn freely,
contact your nearest authorized 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 gearcase isfilled with lubricantto the proper level
at the factory. The only time the lubricant needs

attention is if service has been performed on the gear

CaSe.

• If lubricantis required, useonly Texaco Starplex Pre-

mium 1 Grease, Part No. 750369. Do not substitute.

GRASS CATCHER

(If purchased as an accessory)

• The grass catcher may be hosed with water, but must

be dry when used.

• Check your grass catcher often for damage or deterio-
ration. 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.

10

"CRANK-

:SHAFT

CUSTOMER R

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service
classification SG. Select the oil's SAE viscosity grade
according to your expected operating temperature.

SAE VISCOSITY GRADES

H

°F -_° 0o _° _s2L_, _0o 80.... 10oo

<'C -30_ -2_0° -I0_ O° I0_ 20_ 40•

TEMPERATURE RANGE ANTICIPkTED BEFORE NEXT OiL CH_GE

NOTE: Although multi-viscosity oils (5W30,1! 0W30 etc.)
improve starting incold weather, these multi-viscosityoils
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.
Changethe oil after the first two :hours of operation and

every 25 hours thereafter or atleast once ayear 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. Add SAE
30 motor oil or equivalent. Tighten oil plug securely each

time you check the oil level.
TO CHANGE ENGINE OIL (See Fig. 8)

NOTE: Before tipping lawn mower to drain oil, drain fuei

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 aclean surface.

• Tip lawn mower on itsside and drain oil intoa suitable

container. Rock lawn mower back and forth to remove
any oil trapped insideof 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.

• Replace engine oil cap.

- Reconnect spark plug wire to spark plug.

AIR FILTER

Your engine will not run properly and may be damaged by
using a dirty air fitter.

Replace the air filter every year, more often if you mow in

very dusty, dirty conditions.
TO SERVICE AIR FILTER (See Fig. 9)

• Loosen screw and tilt cover as shown.

• Carefully remove cartridge.

• Clean by tapping gently on a flat surface. If very dirty,

replace cartridge or clean as follows:

• Wash in a low or non-sudsing detergent and warm
water solution. Rinse thoroughly with flowing water

from mesh side until water runsclear, Let cartridge air

dry thoroughly before using.

CAUTION: Petroleum solvents, such
cartridge. They may cause deteriora-

tion of the cartridge. Do not oil car-

as kerosene, are nottobe used to clean

tridge, Do not use pressurized air to

clean or dry cartridge.

Install cartridge, then replace cover making sure the

tabs are aligned with the slots in back plate. Fasten
screw securely.

, , J

ES

CONTAINER

FIG. 8

CARTRIDGE

LIP

SCREW

FIG. 9

MUFFLER

Inspect and replace corroded muffler as it could create a
fire 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.

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.

Turn iawn mower on its side. Make sure air filter and
carburetor are up. Clean the underside of your }awn
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.

• Keepfinished 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 simitartool to remove

any build-up of trash or grass on underside of drive cover.

11

BACK PLATE

TABS

COVER

SERVICE AND ADJUSTM

,i,, , ,, ,,,,i,iiii1,,i, iii , , ,i ,,11,1111,,111 ,,

CAUTION: BEFORE PERFORMING ANY SERVICE OR ADJUSTMENTS:

&_ elease control bar. _

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 MOWER

TO ADJUST CUTTING HEIGHT

See "TO ADJUST CUTTING HEIGHT" in the Operation
section of this manual.

DISCHARGE GUARD

The discharge guard, attached to the discharge opening of
your lawn mower, is provided to prevent the possibility of

injury resulting from objects being thrown out of,the dis-

charge opening into the operator mowing position, tf the

discharge guard becomes damaged, itshould be replaced.

TO REMOVE/REPLACE DRIVE BELT

(See Fig. 10)

• Remove ddve cover. Remove be tby push ngdownon
gear case pulley.

• Turn lawn mower on its side with carburetor and fuel
cap up.

• Remove blade.

• Remove debris shield.

• Remove belt from engine pulley on crankshaft.

• Install new belt by reversing above steps.

• Always use factory approved belt to assure fitand long

life. ..... _

¸¸¸¸/::2¸i ¸¸ /

DRIVE
COVER

_:: BELT

PRESS

FIG. 10

12

SERVICE AND ADJUSTMENTS

TO ADJUST HANDLE (See Figs. 11 Thru 13)

Your lawn mower handle can be raised or lowered for you r
mowing comfort. Four (4) positions are available: high,
medium high, medium low and low. Handles are shipped
mounted in the medium low position.

° To change from medium low to medium high position,

the upper and lower handle sections will have to be

turned over (See Fig. 11B).

• Remove the controls and operator presence control

bar from the upper handle. :.....

• Remove the starter rope guide from the lower handle.

- :Remove hairpin cotters.

• _Disconnect the lower handle from the handle brackets

(See Fig. 13).

° Turn the handle over and reassemble the hairpin

cotters that have been removed.

o

Reassemble the starter rope guide.

o

Reassemble the controls and the operator presence

control bar to the upper handle.

i CAUTION: The operator presence con-

trol bar must pivot freely to permit blade

• • :brake engagement when control bar is

released. Do not overtighten the fas-

teners holding the controls to the up-

per handle. .....

• To change from medium low to high position only the

upper handle section will have to beturned over (See

Fig. 12A).

° To change from medium low to low position, only the

lower handle section will have to be turned over (See
Fig. 12B).

ill ill

SHIPPING POSITION

MEDIUM LOW MEDIUM HIGH

FIG. 11A

\

FIG. 11B

LOW

GH

13

FIG. 12A

\

SQUEEZE

TO REMOVE

HAIRPIN COTTER HANDLE BRACKET

FIG. 12B

LOWER HANDLE

FIG. 13

SERVICE AND ADJUSTMENTS

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 engine is running too fast or too slow, take
your mower to an authorized service center for repair and
adjustment.

TO ADJUST CARBURETOR (See Fig. 14)

Minor carburetor adjustments may be required to compen-
sate for differences in fuel, temperature, altitude or load.
The air cleaner and air cleaner cover must be assembled
to carburetor when running.

INITIAL ADJUSTMENT-

With the engine not running, gently turn idle mixture screw
clockwise until it just closes. Screw may be damaged by

turning it in too far.
Next open the screw one turn counter-clockwise. This

initial adjustment will permit the engine to be started and
warmed up (approximately 5 minutes) pdor to final adjust-

ment,
NOTE: DO NOT adjusttop no load adjusting screw, ttwas

pre-set at the factory,
FINAL ADJUSTMENT-
Place engine speed control leverin "IDLE" or"SLOW" (.il)

position. Adjust idle RPM by turning idle speed adjusting
screw to obtain 1700 RPM. Next, turn idle mixture screw in

(clockwise - lean mixture) until engine just starts to slow.
Then turn idle mixture screw out (counter-clockwise - rich

TOP NO
LOAD

SCREW

IDLE SPEED
ADJUSTING
SCREW

IDLE
MIXTURE

SCREW

FIG. 14

mixture) until engine runs unevenly. Now turn idle mixture
screw midway between rich and lean. Engine should
accelerate smoothly. If engine does not accelerate prop-
erly, the carburetor should be readjusted, usuallyto a richer

mixture, by turning the idle mixture screw counter-clock-
wise t/8 turn more.

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. IFYOU THINK THE ENGINE-GOVERNED
HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR

NEAREST AUTHORIZED SERVICE CENTER, WHICH HAS
PROPER EQUIPMENTAND EXPERIENCE TO MAKE ANY

NECESSARY ADJUSTMENTS.

14

ii iiiiiii iiii, iiiiiiiii i i iiiii1,1

STORAGE

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 isto bestored for a period of time, clean

itthoroughly, remove all dirt, grease, leaves, etc. Store in
a clean, dry area.

• Clean entire lawn mower (See "CLEANING" in the

Customers Responsibilities section of this manual).

• Lubricate as shown in the Customers Responsibilities

section of this manual.

J Be sure that all nuts, bolts, screws, and pins are

securely fastened. Inspect moving parts for damage,
breakage and wear. Replace if necessary.

• Touch up all rusted or chipped paint surfaces; sand

lightly before painting,

HANDLE (See Fig. 15)

You can fold your lawn mower handle for storage.

• Squeeze the bottom ends of the lower handle toward

each other until the lower handle clears the handle
bracket, then move handle forward.

° Loosen upper handle mounting bolts enough to allow

upper handle to be folded back.

IMPORTANT: WHEN FOLDING THE HANDLE FOR
STORAGE OR TRANSPORTATION, BE SURE TO FOLD

THE HANDLE AS SHOWNOR YOU MAY DAMAGE THE
CONTROL CABLES.

• When setting up your handlefrom the storage position,

the lower handle will automatically lock into the mowing

position.

LOWER HANDLE

SQUEEZE TO FOLD

HAIRPIN

COTI'ER

OPERATOR PRESENCE

CONTROL BAR

UPPER HANDLE_

FOLD FORWARD _._,
FORSTORAGE '_.

LOWER HANDLE

FIG. 15

i

D BACKWARD

MOWING

POSITION

MOUNTING
PIN

ENGINE

FUEL SYSTEM

IMPORTANT: IT 1S 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 fue! lines and
carburetor are empty.

• Never useengine 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 stor-

age. 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 ifusing fuel stabilizer.

ENGINE OIL

Drain oil (with engine warm) and replace with clean engine
oil. (See "ENGINE" in the Customers Responsibilities
section of this manual).

CYLINDER

• Remove spark plug.

• Pour one ounce (29 ml) of oil through spark plug hole

into cylinder.

l

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 andio r dirt in your gasoline will cause problems.

• If possible, store your unit indoors and cover itto 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.

CAUTION: Never store the lawn mower
ing where fumes may reach an open

with gasoline in the tank inside a build-

flame or spark. :Allow the engine to
cool before storing in any enclosure.

ill i i

:15

]

REPAIR PARTS

CRAFTSMAN 22" ROTARY LAWN MOWER - MODEL NO. 917.378590

43

45

,43

16

39

I

18

31

49

45

4O

42

38

1

36

62

51

56

38

52

REPAIR PARTS

CRAFTSMAN 22" ROTARY LAWN MOWER - MODEL NO. 917.378590

KEY PART
NO. NO.

1 133088X479
2 STD541425
3 130861
4 128415
5 103672X
7 131959
8 85827

9 51793
10 136376
11 88348
12 84676X479
13 74350424
16 54583

,.J.

"4

17 750157
18 701971X479
19 701969X479
22 128797

23 750097
24 87584X004
25 750149
26 12000014
27 87590
28 87593
29 87589
30 751592
31 750388X459

32 750386X459
33 74760612
35 750085X007
36 84920
38 850855X004
39 87877
40 750913X004

41 61651

DESCRIPTION KEY PART DESCRIPTION

Upper Handle
Locknut

Zone Control Cable

Pop Rivet
Rope Guide

Handle Bolt

Cable Clip

Hairpin Cotter
Handle Knob

Flat Washer 3/8
Lower Handle
Hex Head Screw 1/4-20 x 1-1/2

Hex Tapping Screw 1/4-20 x 1/2
Support Rod

Handle Bracket Assembly (Left)
Handle Bracket Assembly (Right)

Rear Deflector

Hex Washer Head Screw #10-24 x 1/2

Deflector Bracket
Discharge Guard

E-Ring
Hinge Rod
Housing Bracket

Torsion Spring

Locknut

NO. NO.

42 84921
43 88017
44 57143

45 83923
46 85463

47 59289
48 55187

49 STD541425
50 851201X004
51 134612
52 850998
53 851084

54 850263

55 851074

56 850973
57 851514
59 700869X479

62 48324
63 84596

64 87677
68 141131

134027X479
141192
141193

Shoulder Bolt
Wheel & Tire Assembly

Wave Washer
Locknut 3/18-16

Danger Decal
Flat Washer

Thread Cutting Screw 5/16-18 x 3/4

Locknut

Washer

Debris Shield
Hex Head Thread Rolling Screw 3/8-16 x 1-1/8

Hex Head Screw 3/8-24 x 1-3/8 (Grd. 8)
Helical Lock Washer

Hardened Washer
Blade 22"

Blade Adapter

Front Baffle
Lawn Mower Housing (Incl. Ref. #46,59)
Engine Pulley

Hi-Pro Key #HP 505
Engine - Briggs & Stratton - Model No. 128802,

Type No. 0519-21

Rear Baffle (Not Shown)
Owner's Manual (English)
Owner's Manual (Spanish)

Support Bracket (Left)
SupportBracket (Right)

Available accessories not includedwith lawn mower:

Hex Head Bolt 3/8-16 x 3/4
Wheel Adjusting Bracket

Spacer
Selector Spring

Selector Knob
Axle Arm Assembly
Rear Spring Washer H/W

7133072 Grass Catcher

71 33201 Mutcher Kit

7_!33623 Gas Can (2.5 gal.)
71 33500 Fuel Stabilizer
71 33300 SAE 30W Oil (20oz.)

71 33316 Mower Cover

REPAIR PARTS

CRAFTSMAN 22" ROTARY LAWN MOWER - MODEL NO. 917.378590

o_

26

i

24

,%

29

21 1

30

13

REPAIR PARTS

CRAFTSMAN 22" ROTARY LAWN MOWER - MODEL NO, 917,378590

_D

KEY PART DESCRIPTION KEY PART
NO. NO. NO. NO.

1 851509 Control Bar 26 52160

2 STD541425 Locknut 1/4-20 27 85179
3 48029 Control Head Kit 28 77400

4 750029 Screw #10-24 x 2 29 702182
5 137076 Control Cable Assembly 30 87866

6 137078 V-Belt 32 137088
7 750097 Hex Washer Head Screw #10-24 x 1/2 34 77881
8 87930 Clip Guide (Housing) 35 48323

9 700875 Carriage Bolt 1/4-20 x 2 36 132010

10 4802 Washer 37 137052
12 69180 Locknut #10-24 39 75192

I3 88118 Fett Washer 40 850848
14 67725 Washer 1/2 x 1-1/2x.134 41 137090

15 87877 Selector Knob 42 702511
21 88080 Dust Cover 43 751809

22 137054 Pinion 44 751810
23 12000058 E-Ring 45 86012

24 700953 Wheel & Tire Assembly 46 851552
25 86960 Wheel Bushing

DESCRIPTION

Flat Washer
Retainer Clip
Hubcap

Drive Cover Decal
Pan Head Tapping Screw #10-24 x 2-3/4

Drive Cover

Spacer

Drive Control Cable Kit
Flanged Locknut 3/8-16

Drive Pulley

Spring
Hi-Pro Key

Spring
Gear Case Assembly (Complete)

Wheel Adjuster Assembly (Left)

Wheel Adjuster Assembly (Right)
Drive Shaft Cover

Pan Head Hi Lo Screw #10-16 x .63

REPAIR PARTS

22" CRAFTSMAN ROTARY LAWN MOWER - - MODEL NO. 917,378590

GEAR CASE ASSEMBLY PART NUMBER 702511

7

17

15

14

KEY PART
NO. NO. DESCRIPTION

1 17490416 Tapping Screw 1/4-20x 1-1/4

2 137055X004 Engagement Bracket
3 137053 Shifter

4 57072 Seal
5 702710 Grooved Pin 1/8 x 5/8
6 48373 Gear Case Halves Kit (Includes Key

Noso4, 5, and 7)

7 77881 Bearing
8 137051 Worm Shaft

9 137074 Drive Shaft

10 57079 Hardened Washer
11 131484 Clutch Yoke

12 700343 Bushing

I

KEY PART
NO. NO. DESCRIPTION

13 86447 Plug
14 137050 Helical Gear

15 750436X Clutch Jaw
16 750369 Grease
17 12000003 E-Ring
18 850848 Hi-Pro Key
19 81585X004 Spring Bracket

NOTE:

To reseal housing halves use Locktite No. 515,

Part No. 77923

NOTE:

All component dimensions given in U.S. inches.

1 inch = 25.4 mm

2O

BRIGGS & STRATrON
4-CYCLE ENGINE

96_ 968

621

MODEL NO. 128802

TYPE NO. 0519-21

21

BRIGGS & STRATTON
4-CYCLE ENGINE

MODEL NO. 128802

TYPE NO. 0519-21

22

9A

572

5

7

3O7

8

307

842 <_ 8_

306

-k REQUIRES SPECIAL TOOLS
TO INSTALL. SEE REPAIR

INSTRUCTION MANUAL.

22

BRIGGS & STRATTON

4-CYCLE ENGINE

MODEL NO. 128802

TYPE NO. 0519-21

9

842_

524 0

116

Q 634

977 CARBURETOR GASKET SET

"_ 613

617

883

104

851

843 @

r rl Ii 33_3

134

121 CARBURETOR KIT

334

188A

127 116

617 634

23

670A

BRIGGS & STRATTON

4-CYCLE ENGINE

os!

I

I

MODEL NO. 128802

TYPE NO. 0519-21

19721

_ _/_ 670

949

1016

57

L

456 (_

515

69A

69

304

363

f r

_332

455

24

BRIGGS & STRATTON

4-CYCLE ENGINE

KEY PART
NO. NO. DESCRIPTION

MODEL NO. 128802

TYPE NO. 0519-21

KEY PART
NO. NO. DESCRIPTION

1 493260

2 293708
3 299819

5 214193
7 272200
8 495786

9 272481

9A 272238

10 94650
11 231685

12 272198
13 94547

15 94720
16 493362

94388

18 493279
20 399781
22 94220

94612

23

492177

24

222698

25

493262
493385

493386
493387

26

493261
493388

493389
493390

27

26026

28

298909
298908

29

49O566
490743

94699

32
33

262651

34

262652

35

262224

40

93312

45

262204

46

492830

Cylinder Assembly
Bushing, Cylinder

* Seal, Oil

Head, Cylinder

* Gasket, Cytinder Head

Breather Assembly

* Gasket, Valve Cover
* Gasket, Baffle Plate

Screw, Hex Head
Tube, Breather

* Gasket, Crankcase

Screw, Cylinder Head
Plug, Oil Drain

Crankshaft
Timing Gear Key

Sump, Engine

* Seal, Oil

Screw, Hex Head
Screw, Hex Head

(Used in Hole Nearest Breather)

Flywheel

Key, Flywheel
Piston Assembly, Standard Size

Piston Assembly, .010" Oversize
Piston Assembly, .020" Oversize

Piston Assembly, .030" Oversize
Ring Set, Piston, Standard Size

Ring Set, Piston, .010" Oversize
Ring Set, Piston, .020" Oversize

Ring Set, Piston, .030" Oversize
Lock, Piston Pin

Pin, Piston, Standard Size
Pin, Piston, .005" Oversize
Rod, Connecting

Rod, Connecting, .020" Undersize
Screw, Connecting Rod

Valve, Exhaust
Valve, Intake
Spring, Valve

Retainer, Valve Spring

Tappet, Valve

Gear, Cam

47 493737 Slinger, Oil
52 272199 * Gasket, Intake Elbow
54 94526 Screw, Hex Head

55 492831 Housing, Rewind Starter
56 493824 Pulley, Rewind Starter
57 262594 Spring, Rewind Starter

58 280399 Rope, Rewind Starter

(Cut To 88-5/8")

59 396892 Insert, Starter Grip
60 393152 Grip, Starter Rope

65 94696 Screw, Hex Head
69 280973 Washer, Spring

69A 224322 Washer, Flat

81 223664 Lock, Muffler Screw

95 94098 Screw, Round Head
98 398185 Screw, Idle Adjustment

98A 493280 Screw, Speed Adjustment

104 231371 ** Pin, Float Hinge
116 - - - *** Gasket, Sealing (Sold in Kit Only)

118 493765 ** Valve Kit, Needle
121 493762 Carburetor Kit

124 94525 Screw, Carburetor Mounting
125 496625 Carburetor
127 - - - ** Plug, Welch (Sold in Kit Only)

130 223470 Valve, Throttle
131 493267 Shaft, Throttle
133 398187 Float, Carburetor

134 398188 Valve, Inlet (Includes Seat)
137 - - - *** Gasket, Bowl (Sold in Kit Only)

163 272653 * Gasket, Air Cleaner
187 492790 Hose, Fuel

188 398540 Screw, Hex Head
188A 94644 Screw, Hex Head

201 262579 Link, Governor

* Included in Gasket Set (496117)

** Included in Carburetor Kit (493762)

*** Included in both Carburetor Kit (493762),

and Carburetor Gasket Set (490937)

NOTE: Allcomponent dimensionsgiven in U.S. inches

1 inch = 25.4 mm

25

BRIGGS & STRA'n'ON
4-CYCLE ENGINE

MODEL NO. 128802

TYPE NO. 0519-21

KEY PART
NO. NO. DESCRIPTION

209 262660
227 492349

230 67072
258 94512

284 94511
300 496106
304 493293

305 94786
306 224324
307 94515

332 92284
333 802574

334 94731
337 802592
356 398808

358 496117
363 19069

383 89838
387 496115

455 224250
456 224321
459 492833

461 262626
515 262625
523 495264
524 280393

525 495265
529 281299

562 92613
572 224328

592 231082
601 93807

606 224815
608 493295

Includes:

Spring, Governor

Lever, Governor

Washer, Thrust
Screw, Hex Head

Screw, Hex Head

Muffler, Exhaust
Housing, Blower

Screw, Seres
Shield, Cylinder

Screw, Hex Head
Nut, Flywheel

Armature, Magneto

Screw, Sems
Plug, Spark

Wire, Ground

Gasket Set
Puller, Flywheel

Wrench, Spark Plug

Primer, Carburetor
Cup, Starter

Retainer, Starter
Pawl, Rachet

Pin, Shaft
Spring, Retainer
Cap, Oil Filler

* Seal, Filler Tube

Tube, Oil Fill

Grommet
Bolt, Governor Lever
Baffle, Cylinder

Nut, Hex
Clamp, Hose
Strap, Bracket

Starter, Rewind
94128 Screw, Sems

92987 Nut, Hex

613 94231
615 94474

616 262578

617 270344

620 495976
621 396847

Screw, Hex Head
Fastener

Crank, Governor

*** Seal, Intake Elbow

Bracket, Carburetor
Switch, Stop

KEY PART

NO. NO. DESCRIPTION
625 281025 Tube, Fuel Intake

634 - - - *** Washer, Shaft (Sold in Kit Only)

635 66538 Elbow, Spark Plug

670 280512 Spacer, Fuel Tank
670A 493823 Spacer, Bracket

741 262598 Gear, Timing
842 280966 *Seal, O-Ring

843 272616 Sleeve, Lever
847 495263 Tube Assembly, Oil

851 221798 Terminal, Ignition Cable
869 213512 Seat, Intake Valve

870 213513 Seat, Exhaust Valve
871 262001 Guide, Exhaust Vaive

63709 Guide, Intake Valve
883 272253 Gasket, Muffler
922 262640 Spring, Brake
923 493442 Brake Assembly

949 496642 Guard, Finger
955 493637 Screw, Fuel Bowl

957 397974 Cap, Fuel Tank
966 496116 Base, Air Cleaner

967 491588 Filter, Air
968 281340 Cover, Air Cleaner

969 94120 Screw, Hex Head
971 94121 Screw, Hex Head
971A 94749 Screw, Hex Head

972 495224 Tank, Fuel
975 493640 Bowl, Float

977 490937 Gasket Set, Carburetor
1016 224278 Cover, Pulley

1019 496658 Label Kit

RPM Settings: Low Speed: 1900-2100

High Speed: 3000-3200

* Included in Gasket Set (496117)

** Included in Carburetor Kit (493762)

*** Included in both Carburetor Kit (493762),

and Carburetor Gasket Set (490937)

NOTE: AIIcomponent dimensions given in U.S. inches

1 inch = 25.4 mm

26

TROUBLESHOOTING POINTS

PROBLEM

Doesnot start

Loss of power

Poor cut - uneven

Excessive vibration

Starter rope hard to pull

CAUSE

1. Dirty air filter.

2. Out offuel.

3. Stale fuel.

4. Water in fuel.

5. Spark plug w=re is disconnected.

6. Bad spark plug.

7. Loose blade or broken blade adapter.

8. Control bar in released posit_on

9. Control bar defective

1. Rear of lawn mower housing/blade dragging
in heavy grass.

2. Cutting too much grass.

3. Dirty air filter.

4. Buildup of grass, leaves and trash under mower.

5. Too much oil in engine.

6. Walking speed too fast.

1. Worn, bent or loose blade

2. Wheel heights uneven.

3. Low engine speed.

4. Buildup of grass, leaves, and trash under mower.

1. Worn, bent or loose blade.

2. Bent engine crankshaft.

I. Engine flywheel brake is on when control bar is

released.

2. Bent engine crankshaft

3. Blade adapter broken.

4. Blade dragging in grass.

CORRECTION

1. Clean/replace air filter.

2. Fill fuel tank.

3. Drain tank and refill with fresh clean fuel_

4. Drain fuel tank and carburetorand refill tank with fresh
gasoline_

5. Connect wire to plug.

6_ Replace spark plug.

7. Tighten blade bolt or replace blade adapter_

8. Depress control bar to handle.

9. Replace control bar.

1. Set in "Higher Cut" position.

2. Set in "Higher Cut" position.

3. Clean/replace air filter.

4. Clean underside of mower housing.

5. Check oil level.

6. Cut at slower walking speed.

1, Replace blade. Tighten blade bolt,

2. Set all wheels at same height.

3. Set engine speed control in fast position.

4. Clean underside of mower housing.

1. Replace blade, Tighten blade bolt,

2. Contact an authorized service center/department_

1. Depress control bar to upper handle before
pulling starter rope.

2. Contact an authorized service center/department.

3. Replace blade adapter.

4. Move lawn mower to cut grass or to hard surface
to start engine.

(Self-Propelled Mowing)

Grass catcher not filling
(If so equipped)

Hard to push

2, Belt not ddving.

1. Cutting height too tow.

2. Lift on blade worn off.

3. Catcher not venting air.

4. Low engine speed.

1. Grass is too high or wheel he=ght istoo low.

2. Rear of lawn mower housing/blade dragging
in grass.

3. Grass catcher too full.

4. Handle height position not right for you.

2. Put belt on pulleys or replace belts if broken.

I. Raise cutting height.

2, Replace blade.

3. Clean grass catcher.
4, Set eng{ne speed control in fast position.

1. Raise cutting height.

2. Raise rear of lawn mower housing one (l)
setting higher.

3. Empty grass catcher.

4. Adjust handle height to suit.

I:RRFTZMRN®

OWNER'S

MANUAL

MODEL NO.

917.378590

HOW TO ORDER

REPAIR PARTS

5.5 HORSEPOWER
22" SIDE DISCHARGE

POWER PROPELLED
ROTARY LAWN MOWER

Each lawn mower has its own model number. Each en-

gine has its own model number.

The mode! number for your lawn mower witi be found on a
decal attached to the rear of the lawn mower housing.

The model number for your engine wi{l be found on the
blower housing of the engine.

All parts listed herein may be ordered from any Sears,
Roebuck and Co. Service Center/Department and most

Retail Stores.

WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE
FOLLOWING INFORMATION:

• PRODUCT- LAWN MOWER

• MODEL NUMBER - 9!7.378590
* ENGINE - BRIGGS & STRATTON - MODEL

NO. 128802, TYPE NO. 0519-21

• PART NUMBER

• PART DESCRIPTION

141192 08/20/93

consider Sears has service units nationwide staffed with
Sears trained technicians.., professional technicians
specifically trained to _nsurethat we meet our pledge to
you, we service what we sell.

Printed in U.S.A.

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