Maintaining Your Snow Thrower; Off-Season Storage - Troy-Bilt 521 Operator's Manual

SECTION 6: MAINTAINING 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.
Replacing Belt
• Remove the belt cover by removing five hex
screws. See Figure 12.
Figure 12
• Pull up on the idler pulley and slip the belt off the
engine pulley. See Figure 13.
Idler Pulley
Drive
Auger
Belt
Pulley
Figure 13
SECTION 7: OFF-SEASON STORAGE
WARNING:
Never store engine with fuel in
tank indoors or in enclosed, poorly ventilated
areas where fuel fumes may reach an open
flame, spark or pilot light as on a furnace, water
heater, clothes dryer, or other gas appliance.
• Clean snow thrower thoroughly.
Hex
Screw
Hex Screw
Belt Cover
Engine
Pulley
• Push down on the idler pulley and slip the belt off
the auger pulley. See Figure 13.
• Reassemble new belt. Reinstall the belt cover.
Replacing Shave Plate
The shave plate is attached to the bottom of the auger
housing and is subject to wear. It should be checked
periodically. There are two wearing edges and the
shave plate can be reversed. Refer to Figure 9.
• Remove the four carriage bolts and hex lock nuts
which attach it to the snow thrower housing.
• Install new shave plate, making sure the heads of
the carriage bolts are on the inside of the housing.
• Adjust the shave plate according to instructions on
page 9. Tighten securely.
Engine
• Refer to the separate engine manual for all engine
maintenance procedures.
• Check engine and snow thrower frequently for
loose hardware, and tighten as needed.
Lubrication
• Lubricate pivot points on the control handle and the
extension spring at the end of the clutch cable with
a light oil once every season and before storage of
the snow thrower at the end of the season.
• Lubricate the flange keepers on the chute crank
once a season with a light oil making sure the crank
rod moves freely. Remove bolts holding the shroud
to the housing, and lift shroud to access the chute
crank bracket.
• Lubricate as instructed above with a light oil.
• Follow "Storage" instructions in the Engine Manual.
• Store in a clean, dry area. Block the snow thrower
up so it is not resting on the rubber auger blades.
• When storing in a metal storage shed, rustproof the
equipment, especially springs, cables and all
moving parts.
10