Replacing The Drive Belts; Changing The Engine Oil - Toro 38079 Operator's Manual

Replacing the Drive Belts

If the auger/impeller drive belt or the traction drive belt
(Fig. 31) becomes worn, oil-soaked, or otherwise damaged,
replace the belt.
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Figure 31
1. Idler pulley assembly
2. Flange-head bolts
3. Idler pulley
4. Traction drive belt
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug and ensure that
the wire does not contact the plug (Fig. 25).
3. Remove the 3 flange-head bolts that secure the belt
cover to the engine frame and slide the belt cover and
the cable cover up the cables (Fig. 5).
4. Move the speed shift control to the N (Neutral)
position.
5. Remove the 2-flange bolts that secure the idler pulley
assembly to the engine frame and remove idler pulley
assembly (Fig. 31).
6. Remove the bolt and the lock washer that secure the
half sheave to the front of the pulley assembly (Fig. 31).
7. Slide the half sheave and auger/impeller drive belt off
the crankshaft and remove the belt (Fig. 31).
8. If you need to replace the traction drive belt, slide the
middle pulley section and the belt off the crankshaft,
and remove the belt from the pulley (Fig. 31).
9. On the control cable that corresponds to the belt you are
replacing, loosen the jam nuts that secure the cable to
the bracket (Fig. 28).
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8
185
5. Middle pulley section
6. Auger/impeller drive belt
7. Half sheave
8. Bolt and lock washer
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Note: The cable must slide freely in the bracket when
you change the belts.
10. If you replace the traction drive belt, install it around
the traction drive and the middle pulley section, and
slide the middle pulley section onto the crankshaft
(Fig. 31).
11. Install the traction drive belt on the idler pulley
(Fig. 31).
12. Install the auger/impeller drive belt around the half
sheave, and slide the half sheave onto the crankshaft
(Fig. 31).
Note: Ensure that the tabs on the half sheave are
inserted into the mounting grooves in the middle pulley.
13. Install the bolt and the lock washer that secure the half
sheave to the front of the pulley assembly.
14. Install the idler pulley assembly on the engine frame
and secure it with the 2 flange-head bolts (Fig. 31).
Note: Ensure that the idler pulleys align with the belts
when you install the idler pulley assembly.
15. Install the belt and the cable covers.
16. To adjust the belts, refer to Adjusting the Traction Drive
Belt on page 21 or Adjusting the Auger/Impeller Drive
Belt on page 22.
17. Connect the wire to the spark plug.

Changing the Engine Oil

Change the engine oil after the first 2 operating hours, after
every 25 operating hours, and at the end of the
snowthrowing season. If possible, run the engine just
before changing the oil because warm oil flows better and
carries more contaminants.
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug and ensure that
the wire does not contact the plug (Fig. 25).
3. Clean the area around the oil drain plug (Fig. 32).
Figure 32
1. Drain plug
4. Slide an oil drain pan under the drain extension and
remove the oil drain plug.