Troy-Bilt 769-04090 Snow Blower User Manual


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19
6
Maintaining
Your Snow
Thrower
WARNING
The rubber on the fric-
tion wheel is subject
to wear and should be
checked periodically.
Replace the friction
wheel rubber if any
signs of wear or
cracking are found.
remove the hex bolts and cupped washer and bearing
from left side of the frame. Refer to Figure 6-12.
• Holdingthefrictionwheelassembly,slidethehexshaft
out of the right side of the unit. The spacer on the left
side of the hex shaft will fall and the sprocket should
remain hanging lose in the chain.
• Liftthefrictionwheelassemblyoutbetweentheaxle
shaft and the drive shaft assemblies.
• Removefourscrewssecuringthefrictionwheelrubber
between the friction wheel plates. See Figure 6-13.
Discard old rubber.
• Reassemblethenewfrictionwheelrubbertothe
friction wheel assembly, tightening the four screws
in rotation and with equal force. It is important to as-
semble the rubber on the friction wheel symmetrically
for proper functioning.
• Insertthepinfromtheshiftarmassemblyintothe
friction wheel assembly and hold assembly in position.
Refer to Figure 6-14 .
• Slide the hex shaft through the right side of the housing
and through the friction wheel assembly.
• Insert the hex shaft through the sprocket and the
spacer. Make certain that the chain engages both the
large and the small sprocket.
NOTE: If the sprocket fell from the snow thrower while
removing the hex shaft, align sprocket on chain, place
the sprocket on the hex shaft. Position the hex hub of
the sprocket toward the friction wheel when sliding the
sprocket on to the hex shaft.
• Slidethebearingontotheleftendofthehexshaftand
press into the hole on the left side the frame.
• Securewiththecuppedwasherandhexboltremoved
earlier.
• Securetheframecoverwithself-tappingscrews.Put
the snow thrower down to its normal operating position.
Friction Wheel
Figure 6-13
Figure 6-14
Figure 6-12
Remove hex
screw and
washer
Friction
Wheel
Assembly
Slide
hex shaft
Hex Shaft
4. Install the new belt on the pulleys in the
reverse order and re-tension with the idler
pulley.
5. Reassemble your unit by performing the
previous steps in the opposite order.
Changing Friction Wheel
Rubber
WARNING: Run the engine
completely dry of gasoline
before tipping snowthrower.
• Tipthesnowthrowerupandforward,so
that it rests on the housing.
• Removescrewsfromtheframecover
underneath the snow thrower. See Figure 5-2.
• Remove the right wheel(s) from the axle.
• Usinga3/4”wrench,holdthehexshaftand
Shift Arm
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