Toro Lawn-BoySeries Service Manual page 25

3. Loosen auger brake arm assembly by loosening
rear screw and removing front screw (Figure 45).
Figure 45
1. Rear screw
2. Front screw
4. Remove idler pulley spring (Figure 45). Let brake
arm assembly hang free but out of the way.
5. Remove (2) screws, (2) washers, and (2) lock
washers securing belt guide (Figure 43). If the belt
will not slip off, the engine pulley can be removed.
6. Remove engine crankshaft screw, lock washer
and washer (Figure 43).
7. Separate and remove engine pulley sheaves
(Figure 43).
8. Remove auger/impeller drive belt from center
engine pulley, leaving belt looped around large
auger/impeller pulley. Remove center engine
pulley (Figure 43).
9. Remove traction belt from traction pulley and
engine crankshaft (Figure 43).
10. Pull traction idler pulley outward and install new
traction belt (Figure 43).
11. Reinstall center engine pulley.
12. Pull idler pulley outward and loop auger/impeller
drive belt in front of center engine pulley, making
sure that belt is on inside of idler pulley and belt
guide (Figure 43).
Two Stage Snowthrower Drive Systems Manual
M-2678
3. Idler pulley spring
Belts, Controls and Linkages
13. Reinstall engine pulley sheave, washer, lock
washer, and crankshaft screw. Make sure the
indexing rib in the engine pulley sheave is aligned
with the indexing notch in the center engine pulley
(Figure 46).
1. Indexing rib in indexing
notch
14. Make sure brake pad is properly installed on brake
arm. Angled cut-off on brake pad must be
positioned as shown in Figure 47.
View from left side of unit
1. Brake pad
2. Angled cut-off
Figure 46
2. Engine pulley sheave
3. Center engine pulley
Figure 47
3. Auger/impeller drive
belt
4. Traction drive belt
M-2677
M-2681
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