Troy-Bilt 772C0767 - Manuel (Page 14)

14
Figure 15
To check the level of grease in the gear case, remove
the vent plug. If your unit is equipped with a grease
fitting, you may, if necessary, add grease using a
grease gun and the grease fitting on the side of the gear
case.
IMPORTANT: Do not overfill the gear case, since
damage to the seals could result. Be sure the vent plug
is free of grease in order to relieve pressure.
Auger Shaft
• At least once a season, remove the shear pins from
the auger shaft and spray lubricant inside the shaft.
See Figure 15.
• On certain models, grease fittings can be found at
either end of the auger shaft. Lubricate with a
grease gun once a season.
Auger Bearings
Every season lubricate the auger bearings and the
bearings on the side of the frame with light oil. See
Figure 15.
Drive and Shifting Mechanism
Lubricate at least once a season or after every 25 hours
of operation. Remove the rear cover, lubricate 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 the friction
wheel rubber and aluminum drive plate. Refer to
Figure 11.
There is a grease fitting on the top of the axle shaft
which drives the rear track drive wheels on both sides
of the unit. Grease these fittings every 25 hours or once
a season.
Gear Shaft
Lubricate the gear shaft with 6-n-1 grease at least once
a season or after every 25 hours of operation (available
at automotive stores, or order part number 737-0170).
Refer to Figure 11.
IMPORTANT: Keep all grease and oil off of the rubber
friction wheel and aluminum drive plate.
Chute Directional Control
The worm gear on the chute directional control should
be greased with multipurpose automotive grease.
SECTION 7: SERVICING YOUR SNOW THROWER
WARNING: Before servicing, repairing, or
inspecting, disengage all controls 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. Always wear
safety glasses during operation or while
performing any adjustments or repairs.
Augers
• The augers are secured to the spiral shaft with
shear pins and bow tie cotter pins. If you hit a hard
foreign object or ice jam, the snow thrower is
designed so that the pins may shear. Refer to
Figure 17.
• If the augers will not turn, check to see if the pins
have sheared. Replacement shear pins and cotter
pins have been provided with the snow thrower.
When replacing pins, spray an oil lubricant into
shaft before inserting new pins.
IMPORTANT: NEVER replace the auger shear pins with
standard pins. Any damage to the auger gearbox or
other components as a result of doing so will NOT be
covered by your snow thrower’s warranty.
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.
Vent Plug
Plastic
Bearing
Shear Pin
Bearings