Toro 38078 Operator's Manual page 20

6. Remove the engine crankshaft screw, lock washer, and
washer (Fig. 24).
7. Separate and remove the engine pulley sheave
(Fig. 24).
8. Remove the auger/impeller drive belt from the engine
pulley and large auger/impeller pulley (Fig. 24).
9. Pull the idler pulley outward and install a new belt
around the large auger/impeller pulley (Fig. 24).
10. Loop the belt in the front of the engine pulley,
ensuring that the belt is on the inside of the idler
pulley and belt guide (Fig. 24).
11
10
5
Figure 24
1. Engine crankshaft screw,
lock washer, and washer
2. Engine pulley sheave
3. Auger/impeller drive belt
4. Large auger/impeller
pulley
5. Idler pulley
11. Install the engine pulley sheave, washer, lock washer,
and engine crankshaft screw. Make sure to not pinch
the drive belt.
IMPORTANT: Ensure that the indexing rib in the
engine pulley sheave aligns with the indexing notch
in the center engine pulley (Fig. 25).
Figure 25
1. Indexing rib in indexing
notch
8
6
3
7
2
1
4
9
m-3331
6. Center engine pulley
7. Belt guide
8. Traction belt
9. Traction pulley
10. Traction idler pulley
11. Screw, washer, and lock
washer
m-2677
2. Engine pulley sheave
3. Center engine pulley
12. Ensure that the brake pad is properly installed on the
brake arm. The angled cut-off on the brake pad must
be positioned as shown in Figure 26.
View from left side of unit
1. Brake pad
2. Angled cut-off
13. Install the two screws that secure the auger brake arm
assembly. Ensure that the tabs fit into the holes in left
side of the snowthrower (Fig. 27).
1
1. Tabs in holes
14. While someone squeezes the auger/impeller control
lever against the handgrip, install the belt guide using
the two screws, washers, and lock washers.
15. Check and adjust the belt guide, ensuring that it does
not contact any part of the engine pulley and is 1/8 in.
(3 mm) from the belt.
16. Check and adjust the auger drive linkage. Refer to
steps 5–7 of Installing the Auger/Impeller Drive
Control Linkage, page 9.
17. Install the idler pulley spring.
18. Install the belt cover with the three screws.
19. If the auger and impeller are rotating when the
engine is running and the auger/impeller control
lever is not engaged, immediately stop the engine
and bring the snowthrower to an Authorized Service
Dealer for repair.
20
m-2681
Figure 26
3. Auger/impeller drive belt
4. Traction drive belt
m-2678
Figure 27