Adjusting The Auger/Impeller Drive Belt - Toro 38066 Operator's Manual

Figure 33
1. Traction drive belt
2. Engine pulley
3. Indexing rib in indexing
notch
14. Pull the idler pulley outward and loop the
auger/impeller drive belt in front of the engine pulley,
ensuring that the belt is on the inside of the idler pulley
(Fig. 32).
15. Install the engine pulley sheave, ensuring that the
indexing rib in the engine pulley sheave aligns with the
indexing notch in the engine pulley (Fig. 33).
16. Install the washer, lock washer, and crankshaft screw
that secures the engine pulley sheave (Fig. 33).
Note: Do not pinch the auger/impeller drive belt
(Fig. 33).
17. Ensure that the brake pad is properly installed on the
brake arm. Position the angled cutoff on the brake pad
as shown in Figure 34.
Figure 34
View from left side of unit
1. Brake pad
2. Angled cutoff
18. Install the two screws that secure the auger brake arm
assembly. Ensure that the tabs fit into the holes in the
left side of the snowthrower (Fig. 35).
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4. Engine pulley sheave
5. Auger/impeller drive belt
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3. Auger/impeller drive belt
4. Traction drive belt
24
1
Figure 35
1. Tabs in holes
19. Have someone squeeze the auger/impeller drive control
lever (Fig. 20) against the handgrip, and install the belt
guide using two screws, two washers, and two lock
washers.
20. Check and adjust the belt guide, and ensure that it does
not contact any part of the engine pulley.
21. Check and adjust the auger/impeller drive control
linkage. Refer to steps 5 through 7 of Installing the
Auger/Impeller Drive Control Linkage on page 11.
22. Install the idler pulley spring.
23. Install the belt cover with the three bolts.
24. Connect the wire to the spark plug.
Important Ensure that the auger and impeller do not
rotate while the auger/impeller drive control lever is in the
Disengaged position. Stand in the operating position and
look around to the side of the auger housing (Fig. 26). A
large screw head on the side of the auger housing rotates
when the auger and impeller rotate (Fig. 26). If the auger
and impeller rotate while the engine runs and the
auger/impeller drive control lever is disengaged, stop the
snowthrower immediately. Refer to Adjusting the
Auger/Impeller Drive Belt on page 24. If the problem
persists, take the snowthrower to an Authorized Service
Dealer for service.
Adjusting the Auger/Impeller
Drive Belt
Operating the snowthrower with an auger/impeller drive
belt that slips decreases the snowthrowing performance and
damages the belt. Check the auger/impeller drive belt for
the proper tension after the first operating hour, after every
five operating hours thereafter. Adjust the belt when
necessary.
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