Yard-Man 31AH763G401 Operator's Manual page 14

SECTION 7: SERVICING YOUR SNOWTHROWER
A
WARNING:
Before servicing, repairing, or
inspecting, disengage alI clutch levers and
stop engine. Wait until all moving parts have
come to a complete stop. Disconnect spark
plug wire and ground it against the engine to
prevent unintended starting.
Augers
The augers are secured to the spiral shaft with two
shear belts and hex lock nuts. See Figure 17. If you hit
a foreign object or ice jam, the snow thrower is
designed so that the bolts may shear.
T-_ Shear Bolts _-[
ii i
Figure 17
If the augers do not turn, check if the bolts have
sheared. Two replacement shear bolts and hex tock
nuts have been provided with the snow thrower. Refer
to Loose Parts on page 5. For future use, order kit
number OEM-710-0890.
IMPORTANT: NEVER replace the auger shear bolts with
standard hex bolts. Any damage to the auger gearbox
or other components, as a result of doing so, will NOT
be coved by your snow thrower's warranty.
ShavePlateandSkidShoes
• 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.
• To remove skid shoes, remove the four carriage
bolts, belleville washers and hex nuts which attach
them to the snow thrower. Reassemble new skid
shoes with the hardware earlier removed. Make
certain the skid shoes are adjusted to be level.
• To remove shave plate, remove the carriage bolts,
belleville washers and hex nuts which attach it to
the snow thrower housing. Reassemble new shave
plate, making sure heads of the carriage bolts are
to the inside of the housing. Tighten securely.
BeltRemoval a ndReplacement
Auger Belts
• Remove the plastic belt cover on front of the engine
by removing the two self-tapping screws. See
Figure 18.
Self-Tapping
Screws
t Belt Cover
Auger Housing
Figure 18
• Drain the gasoline from the snow thrower, or place
a piece of plastic film under the gas cap.
• Tip the snow thrower up and forward so that it rests
on its auger housing.
• Remove six self-tapping screws from the frame
cover underneath the snow thrower.
• Roll the front and rear auger belts off the engine
pulley. See Figure 19.
Wheel
Pulley
Auger
Drive Wheel
Pulley _ Drive
Belt
Idler
Pulley
Idler
Pulley
Drive
Belts
Figure 19
14