To Replace Auger Shear Bolt; To Adjust Carburetor; Auger Shaft; Engine - Craftsman 536.886531 Owner's Manual

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SERVICE A DADJUST TS
TO REPLACE AUGER SHEAR BOLT ................................
The augers are secured lo the auger shaft with special
bolls (See Fig 34) that are designed to break (to protect
the r0achine) if an object becomes lodged in the auger
housing Use of a harder bolt will destroy the protection
provided by the shear bolt
IMPORTANT: TO iNSURE SAFETY AND
PERFORMANCE LEVELS, ONLY
ORIGINAL EQUIPMENT SHEAR
BOLTS SHOULD BE USED WHEN
REPLACING SHEAR BOLTS, BE SURE
TO REPLACE SHEAR BOLT
SPACERS
To replace a broken shear boll, proceed as follows:
• Move the throttle to STOP and turn off al_controls
• Disconnect the spark plug wire Be sure all moving
parts have stopped
e Remove the broken shear bot{
= Lubricate the auger shaft by squirting oil into the
shear bolt hote in the auger shaft. Then rotate the
auger to distribute the oil on the shaft.
• A{ign the hole in the auger with the hole in the auger
shaft Install the new shear bolt, shear bo!l spacer,
and iocknut provided in parts bag
e Reconnect the spark plug wire
TO ADJUST CARBURETOR
The carburelor (See Fig 35 and Fig 37(page 24) has
been pre-set at the factory and readjustment should not
be necessary However, if the carburetor does need lo be
adjusted, proceed as follows:
• Close the high speed adjusting screw by hand
• Do not over4ighten
• Then open it 1-1/4 to 1-t/2 turns
• Close the idle adjusting screw by har_d Do not over-
tighten
• Then open it 1-1/4 to 1-1/2 turns
• Start the engine and let it warm up
• Set the throttle control to RUN Adjust the high
speed adjusting screw in unti! the engine speed or
sound alters Adjust the screw out until the engine
speed sound alters Note the difference between
the two limits and set the screw in the middle of lhe
range
• Let the engine run undisturbed for 30 seconds after
each setling Io allow lhe engine to reacl to the
previous adjustment
• Set the throttle control to IDLE Adjust the idle
adjusting screw in until the engine speed drops,
then adjust the screw out until the engine speed
drops Nole the difference between the two limits
SHEAR
LOCK NUT
SHEAR BOLT
SPACER
AUGER SHAFT
FIG. 34
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j CARBURETOR
_ IDLE ADJUSTING SCREW
==_==_) (Close {inger tight only)
/ _t_,--=_.,____..,._ HiGH SPEED ADJUSTING
/_ SCREW
BOWL DRAIN (Close linger tight only)
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FIG. 35
and set the screw in the middle of the range
If the engine tends to stall under load or does not
accelerate from tow speed to high speed properly,
adjust the high speed screw out in 1/8 turn incre-
ments until the problem is resolved. Let the engine
run for 30 seconds between settings
IMPORTANT: NEVER TAMPER WITH THE ENGINE
GOVERNOR, WHICH IS FACTORY SET
FOR PROPER ENGINE SPEED
OVER-SPEEDING THE ENGINE
ABOVE THE FACTORY HIGH SPEED
SETTING CAN BE bANGEROUS
IF YOU THINK THE ENGINE-
GOVERNED HIGH SPEED NEEDS
ADJUSTING, CONTACT YOUR
NEAREST SEARS SERVICE CENTER,
WHICH HAS THE PROPER
EQUIPMENT AND EXPERIENCE TO
MAKE ANY NECESSARY
ADJUSTMENTS
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