Craftsman 536.884581 User manual

CRAFTSMRN ®
3 Horsepower
21 Inch Single Stage
Auger Propelled
SNOWTHROWER
ElectricStart
MODEL NO.
536.884581
Caution:
Readandfollow all Safety
Rulesand Operating
Instructionsbeforefirst use
of this product.
SEARS, ROEBUCK AND CO., Hoffman Estates 60179 U.S.A.
340850 08/23t96

Tableof Contents 2 ServiceandAdjustments 12-15
Warranty 2 Storage 16
SafetyRules 2-4 Troubleshooting 17
ContentsofShippingCarton 4 EdgerRepairParts t8-24
Assembty 5 EngineRepairParts 25-28
Operation 6-10 Spanish(Espaflo!) 29-45
Maintenance ! 1 PartsOrdering/Service BackCover
LIMITEDTWO-YEARWARRANTYONCRAFTSMAN SNOWTHROWER
Fortwoyearsfromthedateofpurchase,whenthisCraftsmanSnowThrowerismain-
tained,lubricated,andtunedupaccordingtotheoperatingandmaintenanceinstruc-
tionsintheowner'smanual,Searswillrepair,freeofcharge,anydetectinmaterialor
workmanship.
IfthisCraftsmanSnowThrowerisusedforcommercialorrentalpurposes,thiswar-
rantyappliesforonly90daysfromthedateofpurchase
Thiswarrantydoesnotcoverthefollowing:
• Itemswhichbecomewornduringnormaluse,suchassparkpkJgs,drivebeltsand
shearpins
• RepairsnecessarybecauseofoperatorabuseornegNgence,includingbentcrank
shaftsandthefailuretomaintaintheequipmentaccordingtotheinstructionscon-
tainedintheowner'smanual
WARRANTYSERVICEISAVAILABLEBYRETURNINGTHECRAFTSMANSNOW
THROWERTOTHENEARESTSEARSSERVICECENTER/DEPARTMENTINTHE
UNITEDSTATES.THISWARRANTYAPPLIESONLYWHILETHISPRODUCTISIN
USEINTHEUNITEDSTATES.
Thiswarrantygivesyouspecificlegalrights,andyoumayalsohaveotherrightswhich
mayvaryfromstatetostate.
Sears,RoebuckandCo.,D817WA,HoffmanEstates,IL60179
/k
Z_ CAUTION: Turn key to OFF position
and remove key to prevent accidental
starting when setting-tip, transporting,
adiusting or making repairs.
IMPORTANT: Safety standards require
operator presence controis to minimize the
risk of injury. Your snow thrower is
equipped with such controls Do not attempt
to defeat the function of the operator
presence control under any circumstances.
Look for this symbol to point out Important safety precautions. It means---
ATTENTION!!! Become alert!!! Your safety is involved°
BEFORE USE
• Read the owner's manual carefully. Be
thoroughly familiar with the controls and .
the proper use of the snow thrower. Know
how to stop the snow thrower and
disengage the controls quickly.
• Do not operate the snow thrower without .
wearing adequate outer garments Wear
footwear that wilt improve footing on
slippery surfaces
Keep the area of operation clear of all
persons, particularly small children and
pets.
Thoroughly inspect the area where the
snow thrower is to be used and remove
all foreign objects,
Use extension cords and receptacles as
specified by the manufacturer for all snow
throwers with electric drive motors or with
factoryqnstalled or optional starting
motors
Use only attachments and accessories
approved by the manufacturer of the
snow thrower (such as electric starter kits,
etc.).
Never operate the snow thrower without
good visibility or Iight Always be sure of

yourfooting,andkeepafirmholdonthe
handles.Walk;neverrun.
• Thissnowthrowerisforuseonside-
walks,driveways,andothergroundlevel
surfaces.CAUTION:shouldbeexercised
whileusingonsteepslopingsurfaces.DO
NOTUSESNOWTHROWERON
SURFACESABOVEGROUNDLEVEL
Suchasroofsofresidences,garages,
porchesorothersuchstructuresor
buildings,
• Checkallboltsatfrequentintervalsfor
propertightnesstobesurethesnow
throwerisinsafeworkingcondition.
• Disengageclutchbeforestartingthe
engine,
• Letengineandsnowthroweradjustto
outdoortemperaturesbeforestartingto
clearsnow,
FUEL SAFETY
• Handlefuelwithcare;itishighlyflam-
mable.
• Useanapprovedcontainer,
• Checkfuelsupplybeforeeachuse,
allowingspaceforexpansionastheheat
oftheengineand/orsuncancausefuel
toexpand.
• Fillfueltankoutdoorswithextremecare,
Neverfillfueltankindoors.Replacefuel
tankcapsecurelyandwipeupspilled
fuel.
• Neverremovethefueltankcaporadd
fueltoa runningorhotengine,
• Neverstorefuelorsnowthrowerwithfuel
inthetankinsideabuildingwherefumes
mayreachanopenflame.
OPERATING SAFETY
o Never allow children or young teenagers
to operate the snow thrower, Keep them
away while it is operating, Never allow
adults to operate the snow thrower
without proper instruction.
, Do not operate this machine if you are
taking drugs or other medication which
can cause drowsiness or affect your
ability to operate this machine.
• Do not use this machine if you are
mentally or physically unable to operate
this machine safely,
• Always wear safety glasses or eye
shields during operation or while perform-
ing an adjustment or repair to protect
your eyes from foreign objects that may
be thrown from the snow thrower,
• Do not put hands or feet near or under
rotating parts. Keep clear of the discharge
opening at all times.
• Exercise extreme cautbn to avoid
slipping or falling, especially when
operating in reverse or backing up.
• Do not clear snow across the face of
slopes. Excerctse caultion when changing
direction on slopes. Do not attempt to
clear steep slopes_
• Never operate the snow thrower without
proper guards, plates, or other safety
protective devices in place.
• Never operate the snow thrower near
glass enclosures, automobiles, window
wells, drop_offs, and the tike without
proper adjustment of the snow discharge
angle. Keep children and pets away.
• Never operate the snow thrower at high
transport speeds on slippery surfaces
Look behind and use care when backing.
• Never direct discharge at bystanders or
allow anyone in front of the snow thrower,
• Do not run the engine indoors, except
when starting the engine and for trans-
porting the snow thrower in or out of the
building. Open the outside doors; exhaust
fumes are dangerous, containing CAR-
BON MONOXIDE, an ODORLESS and
DEADLY GAS.
• Take all possible precautions when
leaving the snow thrower unattended.
Disengage the auger/impeller, stop
engine, and remove key°
• Do not overload the machine capacity by
attempting to clear snow at too fast a rate.
SAFE STORAGE
• Always refer to the owner's manual
instructions for important details if the
snow thrower is to be stored for an
extended period,
• Disengage power to the auger/impeller
when snow thrower is transported or not
in use.
• Never store the snow thrower with fuel in
the fuel tank inside a building where
ignition sources are present such as
water and space heaters, clothes dryers,
and the like. Allow the engine to cool
before storing in any enclosure.
REPAIR/ADJUSTMENTS SAFETY
• After striking a foreign object, stop the
engine (motor)_ Turn the ignition OFF to
prevent accidental starting.. Thoroughly
inspect the snow thrower for any damage,
and repair the damage before restarting
and operating ito
• If snow thrower should start to vibrate
abnormally, stop engine (motor) and

check immediately for the cause. Vibra-
tion is generally a warning of trouble.
• Stop the engine (motor) whenever you
leave the operating position_ Also, remove
the ignition key before unclogging the
auger/impeller housing or disch,_rge
chute, and when making any repairs,
adjustments, or inspections. Remove wire
from spark plug to prevent accidental
starting.
• When cleaning, repairing, or inspecting,
make certain the augedimpeller and all
moving parts have stopped. Remove the
ignition key to prevent accidental starting.
• Never attempt to make any adjustments
while the engine is running except when
specifically recommended by the manu-
facturer.
• Maintain or replace safety and instruction
labels, as necessary.
• Run the snow thrower a few minutes after
throwing snow to prevent freeze-up of the
.auger/impeller°
/Ik WARNING: The engine exhaust
from this product contains chemicals
known to the State of California to cause
cancer, birth defects or other reproductive
harm.
,t_ WARNING: This unit is equipped with
an internal combustion engine and should
not be used on or near any unimproved for-
est-covered, brush-covered or grass-cov-
ered land unless the engine's exhaust sys-
tem is equipped with a spark arrester meet-
ing applicable local or state taws (if any). if a
spark arrester is used, it should be main-
tained in effective working order by the op-
erator.
In the state of California the spark attester is
required by law (Section 4442 of the Califor-
nia Public Resources Code). Other states
may have similar taws. Federal laws appIy
on federal lands. A spark arrester/muffler is
available through your nearest Sears Autho-
rized Service Center (See ENGINE REPAIR
PARTS section in this manual).
Contents of Parts Bag
I-Owner's Manual (not shown)
1Paris Bag (not shown)
1-3°2 ouBce container
Craftsman 2-cycle otl 1-Electric Starter Cord
10 ft.

tk
/IkCAUTION: Always wear safety
glasses or eye shields while assembling
snow thrower,
TOOLS REQUIRED FOR ASSEMBLY
1 - Knife to cut carton
The figure to the right shows the snow
thrower completely assembled°
References to the right or left hand side
of the snow thrower are from the viewpoint
of the operator's position behind the unit.
TO REMOVE SNOW THROWER
FROM CARTON
• Locate and remove container of Crafts-
man 2-cycle oil,
• Remove the inserts positioned around the
unit and the packing material,
, Cut down all four corners of the carton
and lay the panels flat.
, Pull snow thrower out of the carton_
TO ASSEMBLE THE SNOW
THROWER
, Remove wrap on upper handle and along
the side of both handles, Discard wrap.
• Loosen the tee knobs on each side of the
upper handle. See figure on this page_
• Raise the upper handle to the operating
position as shown in figure. Hold upper
handle apart to prevent scratching lower
handle.
° Check to be sure the clutch cable is not
caught in the handle. Tighten the tee
knobs.
Auger Control Bar
Chute Control
Tee
Chute Deflector
Knob
i/' CHECKLIST
Before you operate your new snow thrower,
to ensure that you receive the best perfor-
mance and satisfaction from this quality
product, p_ease review the following
checklist:
,f All assembly instructions have been
completed.
#' The discharge chute rotates freely.
4' No remaining loose parts in carton.
While learning how to use your snow
thrower, pay extra attention to the following
important items:
,Z,I Make sure gas tank isfilled with the
correct mixture of gasoline and oil.
,/'4" Become familiar with a!l controls-their
location and function. Operate controls
before starting engine.

KNOW YOUR SNOW THROWER
READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR
SNOW THROWER. Compare the illustrations with your SNOW THROWER to familiarize
yourself with the location of various controls and adjustments. Save this manual for future
reference_
Electric Start ignition Off ignition On Oil/Fuel Mixture Primer Button Push to Engage
Electric Starter
Auger Control Bar
Chute Control
Handle
Chute !lector
Lower
Chute
REAR
!{)nttton Switch
Auger A., Roy !oke Control El
"Auger Housing Button
Box
Auger Control Bar - Starts and stops the
auger which propels the snow thrower.
Chute Control Rod - Changes the direc*
tion of snow discharge.
Chute Deflector - Changes the distance
the snow is thrown,
Dlscharge Chute - Changes the direction
the snow is thrown.
Ignttlon Switch Key - Must be inserted
and turned to the ON position to start the
engine_
Choke Control - Used 1o start a cold en-
gine
Primer Button - Injects fuel directly into the
carburetor manifold for fast starts in cold
weather,
Recoil Starter Handle - Starts the engine
manually_
Electric Starter Button - Used to start the
engine using the 120V electric starter,

HOW TO USE YOUR
SNOW THROWER
TO STOP YOUR SNOW THROWER
• To stop the auger, release the auger
control bar.
NOTE: If the auger continues to creep, refer
(To Adjust Auger Control Cable paragraph on
page !2).
• To stop the engine, turn key to the OFF
position.
TO CONTROL SNOW DISCHARGE
• Turn the chute control rod to set the
direction of the snow throwing.
•Loosen the wing knob on the chute
deflector and move the deflector to set
the distance. Move the deflector (UP) for
more distance, (DOWN) for less distance.
Then tighten the wing knob (See figure
below).
Knob
"TO USE AUGER PROPEL ACTION
• Squeeze the auger control bar down
against the upper handle to allow the
auger to turn.
• To propel forward, raise the handle to
allow the rubber auger blades to contact
the ground (See figure below).
Blades
NormaE ig
be_o CAUTION: Read owner's manual
re operating machine. Never direct
discharge toward bystanders, Release the
auger control bar and stop the engine
before unclogging discharge chute or auger
housing and before leaving the machine_
BEFORE STARTING ENGINE
WARNING: Experience indicates that
alcohol blended fuels (called gasoho_ or
those 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 for 30 days or
longer. Start engine and let it rununtil fuel
lines and carburetor are empty. Use
carburetor bowl drain to empty residual
gasoline from float chamber (See figure in
Storage section, page 16), Use fresh fuel
next season. (See Storage Instructions on
page 16 for additional information).
Never use engine or carl_uretor cleaner
products in the fuel tank or permanent
damage may occur
FILL GAS
The two cycle engine used on this snow
thrower requires a mixture of gasoline and
oil for lubrication of the bearings and other
moving parts_ The correct fuel mixture ratio
is 40:1 (3.2 oz. oil per gallon of gas -see
Fuel Mixture Chart). Gasoline and oil must
be pre-mixed in a clean gasoline container.
Always use fresh, clean, unleaded gasoline.
FUEL MIX CHART (Mlxture 40:1)
U.S. IMPERIA L S. L (METRIC)
o,,GAs OIL G sI OiL
i Gal 3,2 oz, 1Gal 3.7oz, 4 Liters 100ML
GASOLINE AND OIL MIXTURE
Mix gasoline and oil as follows:
• Pour 1 U.So cluart of fresh, dean,
unleaded automotive gasoline to a gallon
gasoline container.
. Add &2 oz of clean, high quality,
Craftsman two-cycle oil into the gasoline
container (One 3.2 ounces of oil pro-
vided)_

DO NOT FILL THE FUEL 'TANK WITH GASOLINE THAT DOES NOT HAVE OIL MIXED IN IT.
SHAKE THE GASOLINE CONTAINER BEFORE EACH FILLING OF THE FUEL TANK.
Oil
(1/2 cup or 3,2 oz,)
Gasoline (_
(1 u.so +
Quart)
1U.S. gallon container
Shake Can
IMPORTANT: Do not use outboard motor
oil or automobile oils, such as SAE 30 oil,
or multi-viscosity oils, such as 10W-30 or
10W-40.
•Reinstall the cap on the gasoline
container and shake container vigorously
so the oi_mixes with the gasoline
• Add an additional 3 U.S_ quarts of
gasoline to the gallon container and
shake the container again.
WARNING: Gasoline is flammable and
.caution must be used when handling or
storing it, Do not fill fuel tank while snow
thrower is running, hot, or when snow
thrower is in an enclosed area. Keep away
from open flame, electrica! spark, and do
not smoke while filling the fuel tank. Never
fill fuel tank completely; but fill the tank to
within 1/4-1/2 inch from the top to provide
space for expansion of fuel Always fill fuel
tank outdoors and use a funnel or spout to
prevent spilling. Make sure to wipe up any
spilled fuel before starting the engine. Store
gasoline in a clean, approved container,
and keep the cap in place on the container.
Keep gasoline in a cool, well ventilated
place; never in the house. Never buy more
than a 30 day supply of gasoline to ensure
volatility. Gasoline is intended to be used as
a fuel for internal combustion engines;
therefore, do not use gasoline for any other
purpose. Since many children like the smell
of gasoline, keep it out of their reach
because the fumes are dangerous to
inhale, as well as being explosive.
TO STOP ENGINE
• To stop the engine, turn the key to OFF
and remove key. Keep key in a safe
place, The engine wilt not start without the
key. See figure on next page,
TO START ENGINE (ELECTRIC
START)
The snow thrower engine is equipped with a
120 volt AC electric starter and recoil starter.
Before starting the engine, be certain that
you have read the following information:
COLD START
• Insert the key and turn ON,
• Move the choke control to the FULL
position,
• Connect the power cord to the switch box
on the snow thrower.
• Plug the other end of the power cord into
athree hole, grounded 120 volt AC
receptacle.
• Push the primer button while covering the
vent holes as follows: (Remove finger
from primer button between primes).
Do not prime iftemperature is above
50°F.
Two times if temperature is 50 ° F to 15°F.
Four times if temperature is below 15°F.
•Push down on the starter button until the
engine starts Do not crank for more than
10 seconds at a time. This electric starter
isthermally protected, If overheated it will
stop automatically and can be restarted
only when it has cooled to asafe tempera_
lure (a wait of about 5 to 10 minutes is
required.
• Disconnect the power cord from the
receptacle first and then from the switch
box on the snow thrower.
. As the engine warms up and begins to
operate evenly, move the choke control
slowly to the OFF position. If the engine

falters,returntoI/2 chokeuntilitruns
smoothly,thenmovetoOFFposition.
NOTE:Allowengine to warm up for a
few minutes before using snow thrower,
as the engine will not develop full power
until it reaches operating temperature_
WARM START
,, Be sure the choke is in the OFF posi-
tion and puli the starter handle until the
engine starts.
• Do not prime a warm engine. If the en-
gine fails to start, follow the Cold En-
gine Start instructions on page 8.
Primer Button Recoil Starter
Handle
Vent Hole
Starter
3ox
Choke _ -_rterButton
CAUTION: This starter is equipped to
operate on 120 volt AC household currenL
Follow all instructions carefully as set forth
in the "To Start Engine" section. When
connecting 120 volt AC power cord, always
connect the cord to the switch box on the
engine first, then plug the other end into the
household receptacle. When disconnecting
the 120 volt AC power cord, always unplug
from the household receptacle first.
TO STOP ENGINE
• To stop the engine, turn the key to OFF
and remove key. Keep key in a safe
place. The engine will not start without
the key. See figure above,
TO START ENGINE (RECOIL START)
Before starting the engine, be certain that
you have read and understood all the
instructions on the preceding pages.
COLD START
• insert the key and turn ON,
o Move the choke control to the FULL
position_
•Push the primer button while covering the
vent holes as follows: (Remove finger
from primer button between primes).
Do not prime if temperature is above
50°F.
Two times if temperature is 50 ° F to 15°F.
Four times if temperature is below 15°Fo
• Pull the starter handle with a smooth
rapid movement. Do not allow the starter
rope to snap back. Rewind smoothly
while holding the starter handle. If the
engine fires but does not start, pull the
starter handleuntit the engine starts.
• After three pulls, repeat the priming and
pulling steps again.
• As the engine warms up and begins to
operate evenly, move the choke control
slowly to the OFF position. If the engine
falters, return to 1/2 choke until it runs
smoothly, then move to OFF position.
NOTE: Allow engine to warm up for a
few minutes before using snow thrower,
as the engine will not develop ful! power
until it reaches operating temperature,
WARM START
• Do not prime a warm engine. If the en-
gine fails to start, follow the Cold En-
gine Start instructions on this page..
Z_ CAUTION: Never run engine indoors
or in enclosed, poorly ventilated areas.
Engine exhaust contains carbon monoxide,
an odorless and a deadly gas. Always stand
behind snow thrower(operator's position)
when starting engine. Do not put hands,
feet, hair or loose clothing in or near the
discharge chute deflector or auger housing
while the engine is running, The tempera-
ture of the muffler and neaby areas may
exceed 150 ° F,; avoid these areas also.
/_ WARNING: Objects such as gravel,
rocks or other debris, if struck by the auger,
may be thrown with sufficient force to cause
personal injury or property damage.
We recommend standard safety glasses or
Wide Vision Safety Mask for over your
glasses.

SNOW THROWING TIPS
• This snow thrower will propel itself
forward when the handle is raised'
enough to cause the auger blades to
contact the ground. The auger should
stop when auger control bar is released°
If it does not, refer to Adjust Auger
Control Cabfe paragraph on page 12.
• For most efficient snow throwing, turn the
discharge chute deflector to throw snow
downwind, and slightly overlap each
swath. In light snow take up to a full cut
and in heavy snow take less than a full
cut,
• The distance snow will be discharged can
be adjusted by moving the discharge
chute deflector. Raise the deflector for
more distance or lower the deflector for
less distance.
• In windy conditions, lower the chute
deflector to direct discharged snow close
to the ground where it is less likely to
blow into unwanted areas,
• Keep the area to be cleared free of
stones, toys and other foreign objects for
safety and to prevent damage to the
snow thrower.
• Do not use the auger propelfing feature
when clearing gravel or crushed rock
driveways° Move the handle down to
raise the auger slightly.
• The allowable forward speed of the snow
thrower is dependent on the depth and
weight of the snow. Experience wilt
establish the most effective method of
using the snow thrower under different
conditions.
DRY AND AVERAGE SNOW
,Snow up to eight inch depth can be
removed rapidly and easily by walking at
a moderate rate. For snow or drifts of a
greater depth you may find it desirable to
slow your pace to allow the discharge
chute 1o dispose of the snow as rapidly
as the auger receives the snow°
• Plan to have the snow discharged in the
direction the wind is blowing.
WET PACKED SNOW
• Move slowly into snow of this condition.
The greater the depth, the slower you 10
should goo When it appears that the wet,
packed snow is causing the auger to slow
down and the chute to clog, back off and
begin a series of short jabs into the snow°
These short back and forth, 4 to 6 inch,
jabbing motions will "belch" the snow
from the chute.
SNOW BANKS AND DRIFTS
• In snow of greater depth than the unit,
use the jabbing technique described
above. Turn the discharge chute away
from the snow bank. More time wil! be
required to remove snow of this type than
level snoW,
PRODUCT SPECIFICATIONS
HORSE POWER: 3HP
DISPLACEMENT: 6.0 cu. in,
GASOLINE CAPACITY: t quart
(unleaded)
FUEL/OIL MIX RATIO: 40:!
(3_2 oz. of air-
cooled engine 2
cycle oil specified
for 40:1 per 1 gaL of
gas)
SPARK PLUG: Champion RCJSY
(Gap ,030) or
Equivalent

CUSTOMER RESPONSIBILITIES
;SERVICE
RECORDS
Fill In dates as
you complete
regular service
i
TightenAil Screws&Nuts j
CheckSparkPlug
CheckDriveBelts
Lubricate ChuteControlFlang_
CheckFue!
DrainFuel
GENERAL RECOMMENDATIONS
The warranty on this snow thrower does not
cover items that have been subjected to op-
erator abuse or negligence. To receive full
value from the warranty, the operator must
maintain the snow thrower as instructed in
this manual. The above chart is provided to
assist the operator in properly maintaining
the snow thrower°
SNOW THROWER
AFTER FIRST USE
• Check for any loose or damaged parts
after each user
• Tighten any loose fasteners,
AFTER EACH USE
.Run the machine to clear the auger of
SNOW_
• Remove all snow and slush from the snow
thrower to prevent freezing of auger or
controls.
LUBRICATION - AS REQUIRED
, Lubricate the flange on the discharge
chute before storage. See To Remove
Top Cover instructions on page !2_
, See Lubrication Chart diagram for
lubrication points and type of lubricant,
SCHEDULE
Before After As IBefore Begin
Each firstt2 Needed ,Storage Each
Use Hours Season
i
LU BRICATION CHART
/
Lubricate chute conlro] flang e
Coat flange wilh a clinging lype
grease such as Lubdplate
ENGINE
SPARK PLUG
11
SERVICE
DATES
• Clean the spark plug and reset the gap
periodically. To service or replace spark
plug, see To Replace the Spark Plug
paragraph on page 15.
• Make sure that the spark plug is tightened
securely into the engine and the spark
plug wire is attached to the spark plug
• If a torque wrench is available, torque
plug to 18 to 23 foot pounds.
• Clean the area around the spark plug
base before removal to prevent dirt from
entering the engine,,

CARBURETOR ADJUSTMENT
The carburetor on this snow thrower is not
adjustable.
IMPORTANT: If you think the carburetor is
not operating properly, contact your
nearest Sears service center.
,_ CAUTION: Never tamper with the
engine governor which is factory set for
proper engine speed. Over speeding the
engine may increase the danger of
personal injury and will void the engine
warranty. If you think the engine governor
high speed needs adjusting, contact your
nearest Sears service center who has the
proper equipment and experience to
make any unnecessary adjustments.
TO ADJUST THE CHUTE CRANK
ASSEMBLY
If you cannot rotate the chute crank fully to the
left and to the right, you need to adjust the
chute crank. See first figure on this page.
•Remove the top cover. See To Remove
Top Cover instructions on this page
•Loosen both 1/2" nuts on the crank
adjusting bracket using I/2" wre.nches
, Swivel the crank adjusting bracket to
allow about 1/8" clearance between the
notch in the flange and the outer diameter
of the worm.
• Once this clearance is set, tighten the
nuts.
TO ADJUST THE AUGER CONTROL
CABLE
The auger control cable isset at the factory for
proper operation, tf you need to adjust the
cable, because the control bar does not prop-
erly engage or disengage the auger, do the
following:
• Remove "Z" hook from the auger control
bar, See second figure on this page.
• Slide the boot toward the loose end of the
cable, See last figure on this page,
• Push the cable down through the hole in
the top of the cable adjustment bracket to
provide slack in the cable. See last figure
on this page°
• Remove the "Z" hook from the top hole in
the cableadjustment bracket and move to
the next hole away from the top of the
bracket. See last figure on this page.
•Pull cable slack through cable adjustment
bracket and insert in the control bar. See
last figure on this page.
, Replace boot over cable adjustment
bracket.
• Insert "Z" hook in the auger control bar.
• Start the snow thrower and check that the
auger does not continue to turn when the
auger control bar is released,
Notch in
Flange
Adjustments
Nuts
:Adjust-
ment Bracket
"Worm
Auger Control
Bar
ook
Cable-._
TO REMOVE TOP COVER
• Follow these steps from operator's
position.
, Remove the T-knob and fasteners on the
discharge chute.

• Remove the gas cap.
•Remove the two bolts and nuts from the
front lip of the top cover, Use a flat head
screwdriver and a 3/8" wrench.
. Remove the bolt from the front right side°
Use a 5/16" and 3/8" wrench.
°Remove the four screws on the left side of
the top cover. Use a large flat head
screwdriver.
.Remove the bolt from the front left side,
Use a 5/16" and 3/8" wrench.
•Remove the four screws on the right side
of the top cover° Use a large flat head
screwdriver.
• Remove the three screws from the top
portion of the control panel.. Use a large
flat head screwdriver.
• Carefully pull up on the rear of top cover
making sure to clear gas tank.
•Carefully lift top cover over the three bolts
holding the lower chute to the chute ring_
NOTE: This area was designed to have a
tight fit, it will be necessary to rock top
cover carefully over these bolts.
° Remove top cover.
• Reinstall in reverse order_
TO REMOVE BELT COVER
•Follow these steps from operator's
position. See figure on this page.
,, Using alarge fiathead screwdriver,
remove the heat shield from the rear of
the belt cover.
•Remove the four bolts and nuts holding
the belt cover to the auger housing. Use
a 5/t6" and 3/8" wrench.
• Remove the two screws holding the belt
cover to the top cover. Use a large flat
head screwdriver. NOTE: tf the top cover
is already removed, omit this step.
•Remove the one screw holding the belt
cover to the bottom cover. Use a large flat
head screwdriver.
• Grasp the bottom portion of the belt cover
and pull down and out to remove.
° Using a large flathead screwdriver,
remove the heat shield from the rear of
the belt cover.
• Reinstall in reverse order.
Bolts to be
removed from
T__ Cover
Screws tobe
removed from Top
Chute Cover
Shield
T-KnoZband
Fasteners Belt rews
Bolts to be
removed from removed
Belt Cover from Belt
TO ADJUST BRAKE PAD Cover
The brake pad is adjusted at the factory and
no periodic adjustment is necessary.
IMPORTANT: Adjustment should only be
made to the brake if the brake pad has
become loose or has been removed. To
adjust proceed as follows:
NOTE: See figure on next page for proper
location of brake pad.
•Turn engine off°
•Remove belt cover, See To Remove Belt
Cover paragraph on this page..
• Remove the top cover. See To Remove
Top Cover instructions on page 12.
NOTE: Make sure the belt is in proper
position. See To Replace the Drive Belt
paragraph on page 14.
• Tie the control bail to the upper handle
with a piece of string. NOTE: This will
engage the pulley and belt system.
•Using a 7/16 wrench, 7/'16 socket, and a
rachet loosen screw and nut on brake
pad. See first figure on page 14 for
location of screw and nut°
•Adjust brake pad up or down to have a
1/8" gap between the bottom of the brake
pad and the belt,
, Tighten screw and nut°

ENGINE SERVICE
Unless the operator is fully qualified to
make engine repairs or adjustments, we
recommend that such work should be done
by technicians trained to work on 6now
thrower type engines. Take your snow
thrower to your nearest SEARS Service
Center for repair and adjustment,
ADJUST ENGINE SPEED
Your engine speed has been factory seL Do
not attempt to change engine speed or it may
result in personal injury° If you believe that the
engine is running too fast or too slow, take
your snow thrower to your nearest SEARS
Service Center for repair and adjustment.
Z_ WARNING: Never store yoursnow
thrower indoors or in an enclosed, poorly
ventilated area If gasoline remains in the
tank, fumes may reach an open flame,
spark or pilot light from a furnace, water
heater, clothes dryer, cigarette, etc.
To prevent engine damage (if snow thrower
is not used for more than 30 days) follow
the steps below.
SNOW THROWER STORAGE
•Thoroughly clean the snow thrower.
, Lubricate all the lubrication points° See
the Maintenance section, page 11.
•Be sure that all nuts, bolts and screws are
securely fastened. Inspect all visible
moving parts for damage, breakage and
wear. Replace if necessary.
•Touch up all rusted or chipped paint
surfaces; sand lightly before painting.
• Cover the bare metal parts of the b!ower
housing and auger with rust preventative,
such as a spray lubricant.
ENGINE STORAGE
Gasoline must be removed or treated to
prevent gum deposits from forming in the
tank, filter, hose, and carburetor during
storage. Also during storage, alcohol
blended gasoline that uses ethanol or
methanol (sometimes called gasohol)
attracts water. It acts on the gasoline to
form acids which damage the engine.
• To remove gasoline, run the engine until
the tank is empty and the engine stops.
Then drain remaining gasoline from
carburetor by pressing upward on bow!
drain located on the bottom of carburetor,
See next figure.
• If you do not want to remove gasoline, a
fuel stabilizer (such as Craftsman fuel
stabilizer No. 33500) may be added to
any gasoline left in the tank to minimize
gum deposits and acids If the tank is
almost empty, mix stabilizer with fresh
gasoline in a separate container and add
some to the tank. Always follow instruc-
tions on stabilizer container. Instructions
on stabilizer container, Then run engine at
least 10 minutes after stabilizer is added
to allow mixture to reach carburetor. Store
snow thrower in a safe place. See
Warning under STORAGE.
OTHER
• If possible, store your snow thrower
indoors with the gas removed and cover it
to give protection from dust and dirt.
, If the machine must be stored outdoors,
block up the snow thrower to be sure the
entire machine is off the ground.
• Cover the snow thrower with a suitable
protective cover that does not retain
moisture_ Do not use plastic or vinyl.
NOTE: A yearly checkup or tune-up at a
SEARS Service Center is a good way of
ensuring that your snow thrower will provide
maximum performance for the next season.
Carburetor
Carbl Drain Right side view of
engine
16

TROUBLE CAUSE CORRECTION
)lfflcult starting Defective spark plug Replace defective plug
Engine stalls Unit running on CHOKE
Blocked fuel line or low on fuel
Water or dirt in fuel system
Carburetor out of adjustment
Englne runs
erractlcally
or
Loss of power
Excessive
,lbration
Units falls to
0ropel itself
Unit fails to
discharge snow
Loose parts; damaged impeller
Damaged auger
Drive belt loose or damaged
Incorrect adjustment of auger con-
trol cable
Auger drive belt loose or damaged
Auger control cable not adjusted
correctly
Discharge chute clogged
Foreign object lodged in auger
Move choke lever to OFF positon
Clean fuel line; check fuel sup-
ply; add fresh gasoline (gaso-
line/oil mixture if 2-cycle engine)
Use carburetor bowl drain to
flush and refill with fresh fuel
See carburetor adjustment sec-
tion in this manual
Stop engine immediately and
remove key, Tighten all bolts
and make all necessary repairs.
if vibration continues, have the
unit serviced by a Sears service
repairman
Repair or replace auger assem _
b!Y
Replace drive belt
Adjust auger control cable
Adjust auger drive belt; replace
if damaged
Adjust auger control cable
Stop engine immediately and re-
move key, Clean discharge
chute and inside of auger hous-
ing
Stop engine immediately and
remove key° Remove object
from auger.
t7

CRAFTSMAN 21" -3H.P. SNOW THROWER 536.884581
ELECTRIC START ASSEMBLY
13
ITEM 1O,
PAGE 19
REF. ITEM 120
PAGE 20
J
930
313944A
Note: Always use original equipment
parts, Use of servicelreplacement paris
other than original pads may void your
warranty,
All unnumbered items are
interchangeable wtth opposite
side
REF
NO,
13
14
15
16
17
18
19 .
93011
PART NO.i
560701
305607
56026
302267
414106
271482
57444
56023
340850
PART NAME
Starter, Engine
Screw, 1t4-20x.86
Clamp, Strap-hinge
Screw, #6-32x250
Flatwasher.188x38x.040
Nut, #6-32 Hexkeps
Cable Tie
Cord, Extension 10 feet
Owner's Manual Eng/Sp
18

CRAFTSMAN 2'1" -3H.P. SNOW THROWER 536.884581
ENGINE/DRIVE ASSEMBLY
32
REF:
NO,
I0
11
12
20
21
22
23
24
25
26
27
28
30
31
32
33
40
PART NO.
ENGINE
180077
120638
333970
180077
120638
18o018
1502
313440
120393
120638
180079
313444
333594
1498
313473
320077
PART NAME
Engine, Model 143 973091
(See Engine pages}
Screw, 5/16-18x 75
Washer, Hvsptik
Brake Pad
Screw, 5/16-18x 75
Washer, Hvspflk
Screw, 1/4-20× 62
Nut, 114-20Reghexctrtk
Belt Guide
Flatwasher. 344x 69x 065
Washer, Hvspttk
Screw, 5/t8-18xl O0
idler Pivot Arm
Shoulder Bolt, 5116-18
Nut, 5116-18Reghexctrtk
Extension Spring
Idler Arm
m
REF
NO.
41
42
45
46
47
50
51
52
53
6O
61
62
70
71
72
75
lg
3343108
PART NO_
333594
1498
48924
302637
41529
180034
120392
313443
t502
313436
414106
121223
48921
'2t25
191956
3_9596
PART NAME
Shoulder Bolt, 5/16-18
Nut, 5/16-18 Reghexctrtk
idler Pulley
Screw, 3/8-16X1-r50
Nut, 3/8-16Hexjam
Screw. 1/4-20xl.50 In
Flatwasher, ,28lx 63x065
Roller, Belt Pinch
Nut, 1/4-20 Reghexctrlk
Rod, Clutch Linkage
Flatwasher, i88x 38x 040
Cotter Pin .062x 75
Engine Pulley
Woodruff Key
Screw, t/4-20x 388qsetcp
Bell Poiy V

CRAFTSMAN 21" - 3H.P. SNOW THROWER 536.884581
FRAME ASSEMBLY
'REF.
rNO,
60
81
90
91
92
I00
t01
io2j
1071
108 I
109 I
1101
1121
1131
1141
1151
1161
1171
118!i
'PART NO.
333769.853
333767
333987
180044
1502
333749-853
180020
t502
180020
120392
1502
333739
340300
323363
47345
335351
323387
56679
335906
PART NAME
Frame,Side RH
Frame, Side LH
Channel, Frame Support
Screw, 1t4-20x2.00
Nut, 114_20Reghexctrik
Bracket, Fuel Tank 15 Qt
Screw, 1/4-20x.75
Nut, :1/4-20Reghexctrtk
Screw, 1/4-20x 75
Flatwasher .281x 63x 065
Nut, 1/4-20 Reghexctdk
Fuel Tank 15 Qt.
Fuel Cap 40:1
Gas Tubing 8 Inches
Hose Clamp
Plate, Boiling Support
Hose Clamp
Filter, In-Line
Tub|ng, 6 inches
333966E
2O
REF.
NO.
120
12!
124
125 I
_26 I
t27 ]
!28 I
130 I
PART NO.
340088
56021
578109
334298-853
180024
120392
1502
57587
PART NAME
Bottom Cover
Screw, 1/4-14x 75 Stwatap
Nut, t/4-20 Speed J Type
Panel, Control
Screw, 1/4-20x1.25
Flatwasher, 2811x 63x.085
Nut, 1/4-20 Reghexctdk
Grommet & Washer
131 1333643
140 156992
141 1138557
142 148140
143 149643
145 154601
146 13355O7
147 1271172
Knob, Stand Tee
Switch,Ignition
Washer, Regintlk
Nut, 5/8-32, Ign Switch
2 Keys &Ring Assy
Primer, Enginer
Hose, Primer 950Lg
Nul, t/4-20 Reghexkeps
333968E

CRAFTSMAN 21" -3H.P. SNOW THROWER 536.884581
BELT COVER ASSEM BLY
174
170
REF,
NO. i
150
151
152
157
159
160
16t
162
PART NO,
340089
274707
997316
56021
578109
335855-853
56021
578109
PART NAME
BettCover
Screw 10-24x.50 Wahhma
Nut, #!0+24 Reghexctdk
Screw 1/4-I4x.75 Slwatap
Nut, t/4-10 Speed J Type
Heat Shield
Screw, 1/4+!4x,75 SIwatap
Nut, 1/4+10Speed J Type
REF.
NO,
170
171
172
173
174
176
181
182
i
182 33431ll
PART NO.
340087
274707
997316
56021
55380
578109
56021
578109
PART NAME
Cover, Top
Screw, tO-24xSWahhma
Nut,#10-24 Reghexctrik
Screw, 1/4+14x.75Slwalal:
Sea!, Strip Aug Chute Foa
Nut, 1/4-10 Speed J Type
Screw, 1/4-14x.75 Slwataf:
Nut, 1/4+10Speed J Type
DISCHARGE CHUTE ASSEMBLY
X
603
-590
-601 tREF.
NO.
580
581
582
583
590
591
592
600
601
602
603
6O4
6O5
606
6071
6o8 i
21
PART NO.
333859
300302
577021
337166
334234
180016
46931
325847
308931
302843
120393
13527
120376
578088
120393
1498
PART NAM E
Ring,Chute
Screw, #I0x50 Tap
Guide, Chute
Seal Strip
Lower Chute
Nut, 1/4+20x,50
Nut, 1/4+20Mac-lock
Upper Chute
Wire, Hinge
Carriage Bolt 5t16-18x1.25
Ffatwasher +344x+69x,065
Knob, T
Nut, 5/16-18 Reghex
Screw, 5/16-t 8x.75
Flatwasher +344x.69x.065
Nut, 5/16-!8 Reghexctdk
337341A