Troy-Bilt 31AH7T74063 - Manual (Page 16)

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• Tip the snow thrower up and forward, so that it rests
on the housing. Refer to Figure 9.
• Remove six self-tapping screws from the frame
cover underneath the snow thrower.
• Remove the click pins which secure the wheels,
and remove the wheels from the axle.
• Using a 7/8" wrench to hold the shaft, loosen, but
do not completely remove, the hex bolt and bell
washer on the left end of gear shaft. See Figure 20.
• Lightly tap the hex nut to dislodge the ball bearing
from the right side of frame before removing the hex
nut and bell washer from left end of shaft.
Figure 20
• Move the gear shaft to the right and slide the friction
wheel assembly from the shaft. See Figure 21A.
• Remove the four screws from the friction wheel
assembly. See Figure 21B.
• Remove the friction wheel rubber from between the
friction wheel plates.
• Reassemble new friction wheel rubber to the
friction wheel plates and hub, tightening the four
screws in rotation and with equal force.
• Position the friction wheel assembly up onto the pin
of the shift rod assembly, and slide the shaft
through the assembly. Reassemble in reverse
order.
Engine
Refer to the separate engine manual packed with your
unit for all engine maintenance procedures.
Figure 21
Off-Season Storage
WARNING: Never store the machine or
fuel container indoors where there is an
open flame, spark, or pilot light such as on
water heater, furnace, clothes dryer, or
other gas appliance.
WARNING: Drain fuel into an approved
container outdoors, away from an open
flame. Allow engine to cool. Extinguish
cigarettes, cigars, pipes, and other
sources of ignition prior to draining fuel.
Fuel left in engine for extended periods
deteriorates and will cause starting
problems.
If unit is to be stored over 30 days, prepare for storage
as follows:
• Remove gasoline from carburetor and fuel tank to
prevent gum deposits from forming on these parts
and causing possible malfunction of engine.
• Run engine until fuel tank is empty and engine
stops due to lack of fuel.
• Drain carburetor by pressing upward on bowl drain,
located below the carburetor cover.
NOTE: Fuel stabilizer is an acceptable alternative in
minimizing the formation of fuel gum deposits during
storage. Do not drain carburetor if using fuel stabilizer.
Track
Hex Bolt &
Bell Washer
Shift Rod
Assembly
Sprocket
Spacer
Pin
Friction Wheel
Assembly
Shaft
Support
Bracket
Friction Wheel Rubber
Screws
Friction Wheel
Hub
Plates
A
B