Toro Lawn-BoySeries Service Manual page 24

Belts, Controls and Linkages
11. Install a new belt around the large traction pulley.
12. Loop the belt over the engine pulley, ensuring that
the belt is on the inside of the belt guide
(Figure 40).
13. Tip the snowthrower forward and block it so that it
cannot fall.
14. Hook the spring into the notch in the bottom edge
of the side plate (Figure 42).
15. Replace the bottom cover with the four screws.
16. Set the snowthrower upright.
17. Install the auger/impeller drive belt around the
large auger/impeller pulley and engine pulley,
ensuring that the belt is on the inside of the idler
pulley and belt guide (Figure 40).
18. Adjust the belt guide so that there is 1/8 in. (0.3
cm) of clearance between the belt and the guide,
and secure the belt guide.
19. Install the belt cover.
2 - 4
Replacing the Traction Belt —
Lawn-Boy Model 28232 and Toro Models
38053, 38066, 38078, 38083, 38084, 38086
When traction belt (Figure 43) becomes worn, oil–
soaked or otherwise damaged, belt replacement is
required.
Figure 43
1. Engine crankshaft
screw, lock washer
and washer
2. Engine pulley sheave
3. Auger/impeller drive
belt
4. Large auger/impeller
pulley
1. Pull wire off spark plug and make sure it does not
contact the plug accidentally.
2. Remove (3) screws holding belt cover in place
and set cover aside (Figure 44).
Figure 44
1. Upper belt cover
Two Stage Snowthrower Drive Systems Manual
M-3331
5. Idler pulley
6. Center engine pulley
7. Belt guide
8. Traction belt
9. Traction pulley
10. Traction idler pulley
11. Screw, washer, lock
washer
M-2671
2. Screw (3)