Snapper MR216518B, MRP216518B Belt Service, Engine Drive Belt Replacement Stretch Type Belts

Section 4 - REPAIR & ADJUSTMENTS

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.

4.3.6. Replacement Of Bearing On Pulley End Of

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, which is located

4.4BELT SERVICE

On self-propelled mowers, the engine belt transmits power from engine to drive disc. 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.

4.4.1.Engine Drive Belt Replacement (Stretch Type Belts)

1.Empty the fuel tank.

2.Note the belt routing in Figure 4.15. There is no idler pulley on these models to disconnect. See Figure 4.15.

on the outside of the right wheel bracket. See
Figure 4.14.
3.	Remove holder, O-ring and bearing.
4.	Install new bearing.
5.	Carefully install new O-ring over the outside of the
new bearing.
6.	Install bearing holder and secure with screws.
7.	Install 3/8” hex lock nut.

ENGINE DRIVE PULLEY

DRIVE BELT

DRIVE DISC

BALL BEARING

“O” RING

3/8”

LOCK NUT

BALL BEARING

HOLDER

FIGURE 4.14

TOP VIEW OF STRETCH TYPE BELT ROUTING

FIGURE 4.15

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