
15
Figure 21
Gear Shaft
Lubricate the gear shaft with a good all-weather multi-
purpose light grease at least once a season or after
every 25 hours of operation.
Refer to Figure 18.
IMPORTANT:
Keep all grease and oil off of the friction
wheel and drive plate.
Drive And Shifting Mechanism
Remove rear cover. Oil any chains, sprockets, gears,
bearings, shafts, and shifting mechanism at least
once a season. Use engine oil or a spray lubricant.
Avoid getting oil on rubber friction wheel and
aluminum drive plate. Refer to Figure 18.
Gear Case
The worm gear case has been filled with grease at
the factory. If disassembled for repairs, lubricate with
2 ounces of shell grease, part no. 737-0168.
IMPORTANT:
Do not overfill the gear case. Damage to
the seals could result. Be sure the vent plug is free of
grease in order to relieve pressure.
Engine
Refer to separate engine manual for engine
maintenance procedures.
WARNING: When following instructions
in separate engine manual for draining oil,
be sure to protect frame to avoid oil dripping
onto transmission parts.
Clean Equipment
Be certain to follow the precautions listed under TO
STOP ENGINE to prevent possible freeze-up.
SECTION 8: SERVICE
Augers
The augers are secured to the spiral shaft with two
shear bolts and hex lock nuts. See Figure 21. If you
hit a foreign object or ice jam, the snow thrower is
designed so that the hex bolts will shear.
If the augers will not turn, check to see if the bolts
have sheared. Two replacement shear bolts and hex
lock nuts have been provided with the snow thrower.
For future use, order part number 710-0890A (shear
bolt 5/16-18 x 1.5") and 712-0429 (hex lock nut
5/16-18).
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.
To remove skid shoes, remove the four carriage
bolts, bell washers and hex nuts which attach them to
the snow thrower. Reassemble new skid shoes with
the four carriage bolts, bell 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 carriage bolts,
bell 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.
Engine
Refer to separate engine manual for all engine
service procedures.
Belt Removal And Replacement
WARNING: Disconnect the spark plug
wire from the spark plug and ground.
Auger Belts
NOTE: It is necessary to remove both belts in order
to change either one. If changing just one belt, be
certain to check the condition of the other belt (model
Shear Bolts
Bearings
Bearings
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