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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
mower.
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.
PULLEY POSITION
DRIVE DISC
SLOT IN END
OF DRI
BOLT
_--
BUSHING
DECK B
/
BOLT RETAINER
>
LOCKWASHER
3. Remove
the
driven
disc.
Refer to
Section
"Replacing
Rubber
Driven
Disc" 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.
9. Loop the belt around the pulley on the bottom of
the drive disc.
10. Reinstall drive disc and retaining hardware.
IMPORTANT:
1) The square shoulder of the drive
disc bolt must fit into the square hole of the bushing.
2) The square
end of bushing
must fit into the
DRIVE
bracket slot.
11. Reinstall belt cover and tighten bolts securely.......................
12. Reinstall
blade
hub
and
cutter
blade .............................................
Recommended torque for blade cap screw is 40 ft. Ibs.
FIGURE 4.16
4.4.2.
Transmission
Poly-V Belt Replacement
1. Remove
the
driven
disc.
Refer
to
Section
"Re4placing Rubber Driven Disc" for procedure.
2. Note the routing of the old belt around the three
pulleys before removing it. See Figure 4.17.
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 4.17.
6. Adjust
clutch cable.
Refer to Section
"Wheel
Drive Control Adjustment:".
BELT GUIDE •
DRIVEN
PULLEY
.iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
¸
.....
......
/
......
.iiiiiiiiiiiiiiiiiiiiiiiiiii
ROUTING
OF POLY-V BELT
FIGURE 4.17
2O
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