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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:
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.
.
8.
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 4.15.
6. Remove the belt cover located under deck.
7. Lift the drive disc up and remove worn belt.
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 4.16.
IDLER
DRIVE
PULLEY
HEX
BRACKET
BELT GUIDE
DRIVEN
PULLEY
ROUTING OF POLY-V BELT
FIGURE 4.16
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 4.18.
SLOT IN END
OF DRIVE DISC
BOLT
DECK BRACKET
(PARTIALLY SHOWN)
_
_ _BOLT
RETAINER
.
INTERNAL TOOTH
P'--"-"
LOCKWASHER
_''"_
NUT
FIGURE 4.15
18
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