Service Manual

Single Stage Snowthrower Service Manual 5 - 9
DRIVE SYSTEMS
R.H. (Right Hand) End Cap/Shaft Replacement On
20” Snowthrowers Produced From 1975 To 1979
1. Refer to "End Cap/Shaft And Bearing
Replacement For 1980 S-200’s" on page 5 - 7.
Perform steps 1 through 3.
2. Slide the end plate assembly off the shaft (Figure
74). Remove both screws retaining the rotor shaft
to the R. H. side plate (Figure 77). If the bushing
in the end plate is “wallowed” (oval shaped),
replace the bushing, end cap, and rotor shaft.
Figure 77 0217-049
3. Refer to "End Cap/Shaft And Bearing
Replacement For 1980 S-200’s" on page 5 - 7.
Complete steps 6 through 9.
L.H. (Left Hand) End Cap/Shaft And Bearing
Replacement For 20” Snowthrowers Produced
From 1977 To 1979
The L. H. (left hand) bearing replacement procedure for
20” snowthrowers manufactured between 1977 and
1979, is identical to bearing replacement servicing for
1980 S-200’s. Refer to "End Cap/Shaft And Bearing
Replacement For 1980 S-200’s" on page 5 - 7.
Perform the entire servicing procedure, steps 1 through
9.
L.H. (Left Hand) End Cap/Shaft And Bushing
Replacement For 20” Snowmasters Produced In
1975 And 1976.
On the 20” Snowmasters manufactured in 1975 and
1976, the drive systems was designed with an oil
impregnated bushing on the left side of the unit.
Production after these years utilized a ball bearing
design.
If a noticeable wobble exists between the bushing and
drive shaft, replacement is necessary. Currently, Toro
has a Rotor Bearing Replacement Kit for 20”
Snowmasters produced in 1975 and 1976.
IMPORTANT: Although the ball bearing design is
somewhat more tolerant to alignment differences,
extreme care should be followed when installing
the bearing kit.
The Rotor Bearing Replacement Kit consists of a
template, an end cap/shaft, bearing flange or retainer,
steel washer, a spacer, three machine screws and
locknuts, and a bearing (Figure 78). (P.N. 38-7360).
Figure 78 0217-050
1. Drain the fuel tank. Refer to "Draining The Fuel
Tank" on page 2 - 5. Complete steps 1 and 2.
2. Remove drive cover and belt. Refer to "Replacing
Drive Belt" on page 5 - 1. Complete steps 2
through 4.
3. Remove rotor pulley. Refer to "Rotor Pulley
Replacement" on page 5 - 6. Complete step 2.
4. Remove rotor halves and paddles. Refer to "End
Cap/Shaft And Bearing Replacement For 1980 S-
200’s" on page 5 - 7. Complete step 3.