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Maintaining
Your Snow
Thrower
WARNING
Always stop engine,
disconnect spark
plug, and ground
against engine before
cleaning, lubricating
or doing any kind of
maintenance on your
machine.
IMPORTANT
Avoid oil spillage on
rubber friction wheel
and aluminum drive
plate.
Do not overfill the gear
case. Damage to the
seals could result.
Figure 20
Figure 21
Lubrication
Drive and Shifting Mechanism
At least once a season or after every 25 hours of opera-
tion, remove rear cover. Lubricate any chains, sprockets,
gears, bearings, shafts, and the shifting mechanism at
least once a season. Use engine oil or a spray lubricant.
Refer to Figure 20.
IMPORTANT: Keep all grease and oil off the rubber
friction wheel and drive plate.
Wheels
At least once a season, remove both wheels. Clean and
coat the axles with a multipurpose automotive grease
before reinstalling wheels.
Auger Shaft
At least once a season, remove the shear pins on auger
shaft. Spray lubricant inside shaft, around the spacers.
Also lubricate the flange bearings found at either end of
the shaft. See Figure 21.
Gear Case
The auger gear case has been filled with grease at the
factory. If disassembled for any reason, lubricate with
two ounces of grease (Part Number 737-0168). Before
reassembling, remove old sealant and apply new sealant.
NOTE: 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.
Augers
• The augers are secured to the spiral shaft with two
shear pins and cotter pins. If the auger should strike a
foreign object or ice jam, the snow thrower is designed
so that the pins may shear. See Figure 21.
• If the augers will not turn, check to see if the pins have
sheared. One set of replacement shear pins has been
provided with the snow thrower. When replacing pins,
spray an oil lubricant into shaft before inserting new
pins.
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:
1. Remove the carriage bolts and hex flange nuts which
secure them to the snow thrower.
2. Reassemble new skid shoes with the carriage bolts
and hex flange nuts. Refer to Figure 22.
To remove shave plate:
1. Remove the carriage bolts and hex nuts which attach
it and the skid shoes to the snow thrower housing.
2. Reassemble new shave plate, making sure heads of
carriage bolts are to the inside of housing. Tighten
securely.
Figure 22
Shear Pin
Vent Plug
Grease
Fitting (optional)
Bearing
SpacersCotter Pin
Auger Shaft
Engine
Refer to the separate engine manual packed with your
unit for all engine maintenace and lubrication instruc-
tions.
Friction
Wheel
Drive
Plate
Gear
(Hex)
Shaft