Bolens 933 SWE, 930 SWE warranty Changing Friction Wheel, Drive Belt Replacement

To adjust, disconnect ferrule from brake bracket assembly. Thread ferrule in (towards idler) to increase tension on belt, or out to decrease belt tension.

NOTE: The brake puck must always be firmly seated in the pulley groove when auger control is disengaged.

IMPORTANT: Repeat the “Testing Auger Drive Control” from the Assembly and Set-up section before operating the snow thrower.

Drive Belt Replacement

If not already done, remove the auger drive belt from the front pulley of the engine double pulley. Refer to “Auger Belt Replacement” instructions in the previous sub-section.

1.Pull the idler pulley away from the backside of the drive belt to relieve the tension and slip the drive belt off the idler pulley. Carefully release the idler pulley. See Figure 7-8.

3

1b

1a

2

Figure 7-8

2.Roll the drive belt off the lower drive pulley and then remove the belt from the engine pulley.

3.Install the new belt on the pulleys in the reverse order and re-tension with the idler pulley.

4.Reassemble by performing the previous steps in the opposite order and manner of removal.

Changing Friction Wheel

The rubber on the friction wheel is subject to wear and should be checked after the first 25 hours of operation, and periodically thereafter. Replace the friction wheel if any signs of wear or cracking are found.

1.Drain the gasoline from the snow thrower, or place a piece of plastic under the gas cap.

2.Tip the snow thrower up and forward, so that it rests on the housing.

3.Remove screws from the frame cover underneath the snow thrower (refer to Figure 7-9). Remove the right wheel from the axle.

Figure 7-9

4.Using a 3/4” wrench, hold the hex shaft and remove the hex screw and belleville washer and bearing from left side of the frame. Refer to Figure 7-10.

Remove Hex Screw	Friction Wheel Ass’y.
Belleville Washer

Slide Hex

Shaft Out

Right Side

Hex Shaft

Figure 7-10

5.Holding the friction wheel assembly, slide the hex shaft out of the right side of the frame. The spacer on the left side of the hex shaft will fall and the sprocket should remain hanging lose in the chain.

6.Lift the friction wheel assembly out between the axle shaft and the drive shaft assemblies.

7.Remove four screws securing the friction wheel to the hub assembly (refer to Figure 7-11). Discard old friction wheel.

8.Reassemble the new friction wheel onto the hub assembly, tightening the four screws in rotation and with equal force. It is important to assemble the friction wheel symmetrically for proper functioning. Refer to Figure 7-11.

20

Section 7— Service