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SERVICE AND ADJUSTMENTS
TO REPLACE AUGER SHEAR BOLT
The augers are secured to the auger shaft with special
bolts (See Fig. 33) that are designed to break (to protect
the machine) 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 EQUIPMENTSHEAR BOLTS
SHOULDBE USED.WHEN REPLACING
SHEAR BOLTS, BE SURE TO REPLACE
SHEAR BOLT SPACERS..
•
To replace a broken shear bolt, proceed as follows:
Move the throttleto STOP and turn off all controls.
Disconnectthe spark plug wire. Be sure all moving
parts have stopped.
Lubricatethe auger shaft zerk fitting (see the Cus-
tomer Responsibilities sectionon pages 16-18).
Aifgn the hole in the auger with the hole in the auger
shaft, Install the new shear boif and shear bolt spacer
provided.
•
Reconnectthe spark plug wire.
TO ADJUST CARBURETOR
The carburetor(See Fig. 34 and Fig. 36, Page 26) has
been pre-setatthe factoryand readjustmentshouldnot be
necessary. However, if the carburetor does need to be
adjusted,proceed as follows:
•
Closethe highspeed adjustingscrew by hand.
•
Do not over-tighten.
•
Then open it 1-1/4 to 1-1/2 turns.
•
Close the idle adjusting screw by hand. Do not over-
tighten.
•
Then open it 1-1/4 to 1-1/2 turns.
•
Startthe engine and let it warm up.
Set the throttlecontrol to RUN. Adjustthe high speed
adjustingscrew In untilthe engine speed or sound
alters. Adjust the screw out until the engine speed
sound alters. Note the difference I_etween the two
limitsand set the screw in the middle of the range.
Letthe engine run undisturbedfor 30 seconds after
each settingto allowthe engine to react to the previ-
ous adjustment.
Set the throttle control to SLOW. Adjust the idle
adjustingscrewIn untilthe engine speed drops,then
adjustthe screw out until the engine speed drops.
Note thedifferencebetweenthe two limits and set the
screw in the middle of the range.
SHEAR BOLT ._
SHEARsPAcERBOLT
Q
g
i
i
n
I
LOCKNUT
FIG. 33
BOWL DRAIN
CARBURETOR
_IDLE
ADJUSTING SCREW
(Close finger tight only)
HIGH SPEED ADJUSTING
SCREW
(Close finger tight only)
FIG. 34
•
If the engine tends to stall under load or does not
accelerate from low speed to high speed properly,
adjust the high speed screwout in 1/8 turn increments
until the problem is resolved. Let the engine run!or30
secondsbetween settings.
IMPORTANT:
NEVER TAMPER WITH THE ENGINE.
GOVERNOR,WHICH IS FACTORYSET
FOR
PROPER
ENGINE
SPEED.
OVERSPEEDING THE ENGINE ABOVE
THE FACTORY HIGH SPEEDSETTING
CAN
BE
DANGEROUS.
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.
24
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