MTD 500 series Shop Manual page 38

Medium Frame 2 & 3 Stage Snow Throwers
4. Rotate the friction wheel assembly until the collar is
free from the pin on the shift assembly.
5. Maneuver the shaft partially through the wheel drive
frame, then tilt the assembly forward to free it from
the housing. See Figure 4.9.
6. Examine the removed parts: if any failed because of
something other that normal wear, identify and cor-
rect the cause before returning the snow thrower to
service.
7. Install the drive shaft assembly by following the pre-
vious step in reverse order.
NOTE: Place a small amount of 3-in-1, or similar oil,
on a rag. Wipe a light coating of oil on the
hex shaft.
8. Test run the snow thrower before returning it to service.
34
Collar
Figure 4.9