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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 on
the outside of the right wheel bracket. See Figure
4.15.
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.
FIGURE 4.15
4.4 BELT SERVICE
On these 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
1. Empty the fuel tank.
2. Unhook the idler spring from the right rear wheel
bracket. See Figures 4.16.
FIGURE 4.16
IMPORTANT: DO NOT tip machine with carburetor or
spark plug down. Oil from crankcase will saturate the air
filter and cause the engine to be hard to start or not start at
all. If contamination does occur, the air filter will have to be
replaced.
3. Remove the driven disc. Refer to Section
“Replacing Driven Disc Rubber Ring” for driven disc
removal procedure.
4. Do not tilt mower with spark plug or carburetor down.
Tilt mower up on its rear wheels and remove blade and
blade hub. Assistance from another person may be
necessary to hold mower in the tilted position.
(Continued On Next Page)
BALL BEARING
“O”
RING
3/8”
LOCK
NUT
BALL
BEARING
HOLDER
RIGHT REAR
WHEEL BRACKET
IDLER ARM
SLOT IN
DECK
IDLER
SPRING
DRIVE DISC
DRIVE BELT
ENGINE DRIVE PULLEY
TOP VIEW OF ENGINE BELT ROUTING