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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 4.14.
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.
FIGURE 4.14
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 4.15 and 4.16.
FIGURE 4.15
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 on
“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
IDLER
SPRING
SLOT IN
DECK
DRIVE DISC
DRIVE BELT
ENGINE DRIVE PULLEY
TOP VIEW OF ENGINE BELT ROUTING