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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
(Continued from Previous Page)
FIGURE 4.17
5. Hold the slotted end of the drive disc bolt with a
screwdriver and remove the nut and internal tooth lock
washer. See Figure 4.17.
6. Lift the drive disc off the idler arm and remove worn
belt.
7. Loop one end of new belt over engine pulley and
insert the other end through slot in deck. See Figure
4.17.
8. Loop the belt around the pulley on the bottom of the
drive disc.
9. Reinstall drive disc and retaining hardware.
10. Reinstall blade hub and cutter blade. Recom-
mended torque for blade cap screw is 30 to 40 ft. lbs.
11. Use a stiff wire, such as a coat hanger, with a hook
fashioned on one end to pull the hooked end of the idler
spring through the large hole in the right wheel bracket.
See Figure 4.18.
12. Reinstall the driven disc assembly.
FIGURE 4.18
4.4.2. Transmission Poly-V Belt Replacement
1. Remove the driven disc. Refer to Section
“Replacing Driven Disc Rubber Ring” for procedure.
2. Note the routing of the old belt around the three
pulleys before removing it. See Figure 4.19.
3. Place new Poly-V Belt over end of hex shaft and
onto driven pulley.
4. Work belt onto top of idler pulley.
5. 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 4.19.
FIGURE 4.19
DRIVE
DISC
SLOT IN END
OF DRIVE
DISC BOLT
BUSHING
IDLER
ARM
DECK BRACKET
(PARTIALLY
SHOWN)
IDLER
SPRING
NUT
INTERNAL TOOTH
LOCKWASHER
BOLT
RETAINER
POSITION
SCRAPER TO
CLEAR “V” OF
PULLEY
RIGHT
WHEEL
BRACKET
PULL SPRING
THROUGH LARGE
HOLE & HOOK
INTO SMALL HOLE
IDLER
SPRING
DRIVE
PULLEY
IDLER
PULLEY
POLY-V
BELT
DIFFERENTIAL
BRACKET
BELT
GUIDE
HEX
SHAFT
DRIVEN
PULLEY
ROUTING OF POLY-V BELT