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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)
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.
RIGHT
WHEEL
BRACKET
PULL SPRING THROUGI"
LARGE HOLE & HOOK
INTO SMALL HOLE
IDLER
SPRING
SLOT IN END
DISC BOLT
POSITION SCRAPER
TO CLEAR "V" OF
BUSHING
ARM
SPACER
IDLER
SPRING
INTERNAL TOOTH
DECK BRACKET
(PARTIALLY
NUT
SHOWN)
I
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 cu_er blade. Recom-
mended torque for blade cap screw is 30 to 40 ft. Ibs.
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 on
"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 Poty-V Belt over end of hex shaft and
onto drive pulley.
4. Work belt onto top of idler pulley.
5. Twist belt sideways and pull it upward between
the differential
bracket and driven pulley and then
down into the pulley groove.
Make sure the Poly-V
Belt is above belt guide. See Figure 4.19.
IDLER
DRIVE
PULLEY
HEX SHAFT -
BELT GUIDE
)RIVEN
PULLEY
ROUTING OF POLY-V
FIGURE 4.19
17
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