19
Maintenance
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 30), 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.
Belt Service
On self-propelled mowers, the engine belt (A, Figure 31)
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 31). There is no idler
pulley on these models to disconnect.
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.
! !
Figure 31: Engine drive belt routing
B
Figure 30: Replacing the hex shaft bearing
B
A
C
D
A
C
Maintenance (Continued)
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