MTD 769-04101 - Manual (Page 19)

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