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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.
4.4.1. Engine Drive Belt Replacement
(Stretch Type Belts)
(Continued From Previous Page)
IMPORTANT: Drain fuel tank before tipping machine.
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 Rubber Driven Disc Ring" for driven
disc assembly removal procedure.
4. 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.
5. Hold the slotted end of the drive disc bolt with a
screwdriver and remove the nut and internal tooth
lock washer. See Figure 4.16.
6. Remove the belt cover located under deck.
7. Lift the drive disc up and remove worn belt.
8. Loop one end of new belt over engine pulley and
insert the other end through slot in deck. See
Figure 4.15.
PULLEY POSITION
4.4.2. Transmission Poly-V Belt Replacement
1. Remove the driven disc. Refer to Section
Replacing Driven Disc Rubber Ring" for procedure.
4. Note the routing of the old belt around the
three pulleys before removing it. See Figure 4.17.
IDLER
DRIVE
PULLEY
HEX SHAFT
BRACKET
BELT GUIDE DRIVEN
PULLEY
ROUTING OF POLY-V BELT
FIGURE 4.17
5. Place new Poly-V Belt over end of hex shaft
and onto driven pulley.
6. Work belt onto top of idler pulley.
7. Twist belt sideways and pull it upward between
the differential bracket and drive pulley and then
down into the pulley groove. Make sure the Poly-V
Belt is above belt guide. See Figure 4.17.
SLOT IN END
OF DRIVE DISC
BOLT
DECK BRACKET
(PARTIALLY SHOWN)--- 1 _r'"_ BOLT RETAINER
_,_-_,""_ INTERNAL TOOTH
e,.--.---- LOCKWASHER
_---- NUT
FIGURE 4.16
18
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