18
Auger Shaft
•
At least once a season, remove shear bolts on
auger shaft. Oil or spray lubricant inside shaft and
lubricate the auger bearings. See Figure 24.
Figure 24
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. See Figure 25.
Figure 25
Gear Case
The worm gear case has been filled with grease at the
factory. If disassembled for any reason, lubricate with 2
ounces of shell grease, part number 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.
SECTION 8: SERVICING YOUR SNOW THROWER
WARNING:
Before servicing, repairing,
or inspecting, disengage all 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
Engine
Refer to the separate engine manual packed with your
unit for all engine maintenance procedures.
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, cupped washers and hex nuts which attach
them to the snow thrower. Reassemble new skid
shoes with the four carriage bolts, cupped washers
(cupped side goes against skid shoes) and hex
nuts. See Figure 26.
•
To remove shave plate, remove the carriage bolts,
cupped washers and hex nuts which attach it to the
snow thrower housing. Reassemble new shave
plate, making sure heads of carriage bolts are to
the inside of housing. Tighten securely.
Figure 26
Vent Plug
Plastic
Bearing
Plastic
Bearing
Shear Bolts
Chain
Shift Lever
Gear Shaft
Avoid oil on
friction wheel and
drive plate
Carriage
Skid Shoe
Hex Nuts
Shave Plate
Bolts
Skid Shoe
Summary of Contents for 644E
Page 31: ...31 NOTES ...
