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21
Carburetor
WARNING: If any adjustments are made
to the engine while the engine is running
(e.g. carburetor), keep clear of all
moving parts. Be careful of heated
surfaces and mufflers.
Minor carburetor adjustments may be required to
compensate for differences in fuel temperature,
altitude and load.
Service
Augers
The augers are secured to the spiral shaft with two
shear bolts and hex lock nuts. If you hit a foreign
object or ice jam, the snow thrower is designed so
that the bolts will shear. See Figure 22. Lock nuts
cannot be threaded onto a bolt by hand. This type of
nut is used where vibration occurs.
If the augers do not turn, check to see if the bolts
have sheared. Two replacement shear bolts (shown
in Figure 22 inset ) and hex lock nuts have been
provided with the snow thrower. When replacing
bolts, spray an oil lubricant into shaft before
inserting new bolts.
Figure 22
Shave Plate And Skid Shoes
The shave plate and skid shoes on the bottom of the
snow thrower are subject to wear. They should be
checked periodically and replaced when necessary.
• Remove the four carriage bolts, belleville
washers and hex nuts which attach skid shoes
to the snow thrower on two sides. See Figure 22.
• Reassemble new skid shoes with the four
carriage bolts, belleville washers (cupped side
goes against skid shoes) and hex nuts. Make
certain the skid shoes are adjusted to be level.
• To remove shave plate, remove the skid shoe
and the rest of hardware including carriage
bolts, belleville washers and hex nuts which
attach shave plate to the snow thrower housing.
For location of shave plate, see Figure 22.
• Reassemble new shave plate, making sure
Shave Plate
Shear Bolt
Shear Bolt
heads of the carriage bolts are to the inside of
the housing. Reinstall skid shoe. Tighten
securely.
Replacing Belt
WARNING
: Disconnect the spark plug
wire from the spark plug and ground.
Auger Belts
• Remove the plastic belt cover on the front of the
engine by removing the two self-tapping screws.
See Figure 23.
Figure 23
• Disconnect chute crank assembly at the
discharge chute by removing the hairpin clip and
the two flat washers. See Figure 24.
Figure 24
• Remove the six hex nuts and lock washers
which attach the auger housing assembly to the
frame assembly. See Figure 25.
WARNING: Do not attempt to change the
auger belt without the help of an assistant. It
is very important that one person, standing
at the operating position, firmly hold the
snow thrower housing to prevent it from
tipping while the other person replaces the
belt. Failure to comply with this may result in
injury.
Self-Tapping Screw
Belt Cover
Self-Tapping Screw
Remove hairpin clip,
flat washer
Remove hairpin
clip, flat washer
Flat
Washer
Hairpin Clip
Chute
Crank
ADJUSTMENTS