Snapper NP2167519B Belt Service, Replacing the Bearing On the Pulley End Of the Hex Shaft

Maintenance (Continued)

! WARNING !

DO NOT attempt any maintenance, adjustments or service with engine and blade running. STOP engine and blade. Disconnect spark plug wire and secure away from spark plug. Engine and components are HOT. Avoid serious burns, allow sufficient time for all components to cool.

Replacing the Bearing On the Pulley End Of the Hex Shaft

To replace the bearing on the pulley end of the hex shaft, proceed as follows:

1.Hold the hex shaft with an adjustable wrench held next to the pulley.

2.Remove the 3/8” hex lock nut (B, Figure 33), located on the outside of the right wheel bracket.

3.Remove the holder (A), O-ring (C) and bearing (D).

4.Install the new bearing.

5.Carefully install the new O-ring over the outside of the new bearing.

6.Install the bearing holder, and secure with screws.

7.Install the 3/8” hex lock nut.

D

C

Belt Service

On self-propelled mowers, the engine belt (A, Figure 34) transmits power from the engine pulley (B) to the drive disc

(C). The drive disc powers the poly-v belt, which engages the transmission that powers the rear wheels. Should these belts become worn, they could cause slippage, which would impair mower performance. The condition of the engine belt and poly-v belt should be checked after every 25 hours of mower operation.

Engine Drive Belt Replacement (Stretch Type Belts)

1.Empty the fuel tank.

2.Note the belt routing (Figure 34). There is no idler pulley on these models to disconnect.

A

C

B

Figure 34: Engine drive belt routing

Maintenance

B

A

Figure 33: Replacing the hex shaft bearing

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