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SERVICE AND ADJUST
TS
TO REPLACE A"UGER sHEAR BOLT
The augers are secured to the auger shaft with special
bolts (See Fig, 34) 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 PERFOR-
MANCE LEVELS, ONLY ORIGINAL
EQUIPM ENT SHEAR BOLTS SHOULD
BE USED WHEN REPLACING SHEAR
BOLTS,
BE SURE TO REPLACE
SHEAR BOLT
SPACERS.
To replace a broken shear bolt, proceed as follows:
®
Move the throttle to STOP and turn off all controls
O
O
o
®
Disconnect the spark plug wire. Be sure all moving
parts have stopped.
Remove the broken shear bolt,
Lubricate the auger shaft by squirting oil into the shear
bolt hole in the auger shaft..Then rotate the auger to
distribute the oil on the shaft.
Align the hole in the auger with the hole in the auger
shall Installthe new shearbolt, shear bolt spacer, and
Iocknut provided in parts bag.
®
Reconnect the spark plug wire
TO ADJUST CARBURETOR
The carburetor (See Fig, 35 and Fig_ 37(page 25) has
been pre-set at the factory and readjustment should not
be necessary. However, if the carburetor does needto be
adjusted, proceed as follows:
@ Close the high speed adjusting screw by hand.
®
Do not over-tighten.
®
Then open it 1-I/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
•
Start the engine and let it warm up.
•
Set the throttle control to RUN. Adjust the high speed
adjusting screw In until 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 the range
•
Let the engine run undisturbed for 30 seconds after
each setting to allow the engine to react to the previ-
ous adjustment.
•
Set the throttle control to IDLE. Adjust the idle adjust-
ingscrew In untilthe engine speed drops, then adjust
the screw out until the engine speed drops Note the
difference between the two lirnits and set the screw in
the middle of the range.
SHEAR
BOLT "_
_p
SHEAR BOLT
SPACER
AUGER
SHAFT
FIG. 34
IDLE ADJUSTING SCREW
(Close finger light only)
BOWL DRAIN
HIGH SPEED ADJUSTING
SCREW
(Close finger tight only)
O
IMPORTANT:
FtG. 35
If the engine tends to stall under load or does
notaccelerate
from low speed to high speed
properly, adjust the high speed screw out in 1/8 turn
increments until the problem is resolved. Let the
engine run for 30 seconds between settings.
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 DANGEROUS.
iF
YOU THINK THE ENGINE-
GOV-
ERNED HIGH SPEED NEEDS A D *
JUSTING, CONTACT YOUR NEAR-
EST SEARS
SERVICE
CENTER,
WHICH HAS THE PROPER EQUIP-
MENT AND EXPERIENCE TO MAKE
ANY NECESSARY
ADJUSTMENTS
23
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