20
Drive Belt
•
Follow first four steps of previous instructions.
•
Pull idler pulley up, and lift belt off engine pulley and
friction wheel disc. See Figure 28.
•
Using a wrench, loosen the nut on the stop bolt until
the support bracket rests on the auger pulley.
See Figure 30.
•
Slip belt between friction wheel and friction wheel
disc. Remove and replace belt. Reassemble in
reverse order.
NOTE:
The support bracket must rest on the stop bolt
after the new belt has been assembled. See Figure 30.
Figure 30
Friction Wheel Rubber
Replace the friction wheel rubber if any signs of wear or
cracking are found. Follow instructions below to replace
the rubber.
•
Tip the snow thrower up and forward, so that it rests
on housing. Refer to Figure 19.
•
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 wrench to hold the shaft, loosen, but do not
completely remove, the hex nut and bell washer on
the left end of gear shaft. See Figure 31.
Figure 31
•
Lightly tap the hex nut to dislodge the ball bearing
from the right side of the frame. Remove the hex
nut and bell washer from the left end of the shaft.
•
Slide the gear shaft to the right then slide the
friction wheel assembly from the shaft.
•
Remove the four screws from the friction wheel
assembly. See Figure 32.
•
Remove the friction wheel rubber from between the
friction wheel plate.
•
Reassemble new friction wheel rubber to the
friction wheel assembly, tightening the four screws
in rotation and with equal force. See Figure 32.
Figure 32
•
Slide friction wheel assembly back onto the gear
shaft. Be sure to align the pin on the shift rod with
hole in the friction wheel assembly. See Figure 29.
•
Reassemble gear shaft and the wheels. Reattach
the frame cover. Flip snow thrower back to its
operating position and remove any plastic from
under the machine or around the gas cap if you had
put it earlier.
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
a water heater, furnace, clothes dryer or
other gas appliances.
WARNING:
Drain fuel into an approved
container outdoors, away from 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 period
deteriorates and will cause serious
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.
Friction
Stop
Bolt
Support Bracket
Drive Belt
Friction Wheel
Wheel Disc
Hex Nut &
Bell Washer
Friction Wheel Rubber
Screws
Friction Wheel
Hub
Plates
Summary of Contents for 644E
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