Replacing The Drive Belt; Replacing The Spark Plug - Toro 38428 Operator's Manual

1
Figure 19
1. Scraper
6. Install the new scraper to the housing using the
carriage bolts and locknuts.

Replacing the Drive Belt

Inspect the drive belt before each season, and replace it if
it is worn or damaged.
1. Stop the engine.
2. Remove three self tapping screws, two capscrews, one
washer, and two locknuts that secure the belt cover to
the snowthrower frame (Fig. 20). Set the drive belt
cover aside.
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1
Figure 20
1. Cap screw, locknut
2. Capscrew, locknut,
washer
3. Push down on the idler pulley and remove the drive
belt from the rotor pulley, the brake arm assembly, and
the engine pulley (Fig. 21).
4. Loop the new drive belt around the engine pulley,
under the idler pulley, over the roller, through the
brake assembly, and around the rotor pulley (Fig. 21).
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2. Carriage bolts and
locknuts (3)
3
4
631
3. Long self tapping screw
4. Short self tapping screws
4
5
1. Engine pulley
2. Idler pulley
3. Roller
IMPORTANT: The drive belt must be on top of the roller
as shown in Figure 21.
5. Install the drive belt cover. Tighten the fasteners
securely, but do not overtighten.

Replacing the Spark Plug

Before each season, check the spark plug. If the electrodes
in the center of the plug are dark or have deteriorated,
install a new NGK BPMR4A spark plug.
1. Remove three capscrews securing the control panel to
the housing (Fig. 22).
2. Remove the ignition key and lift off the panel,
allowing it to hang on the recoil rope.
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1. Control panel
18
2
6
3
Figure 21
4. Brake arm assembly
5. Rotor pulley
6. Belt guide
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Figure 22
2. Mounting screws
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626