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Section 5 - ADJUSTMENTS
& REPAIR
WARNING
DO NOT attempt any maintenance,
adjustments
or
service
with engine running.
STOP engine.
STOP
blades. Set brake. Remove key. Remove spark plug
wires and secure away from
spark plugs. Engine
and components
are HOT. Avoid
serious
burns,
allow sufficient
time for all parts to cool.
5.3
TRACTION BELT TENSION
The traction
drive belt tension does not require
adjustment.
If the beIt is slipping,
it will have to be
replaced.
5.4
TRACTION BELT REPLACEMENT
1. Remove mower drive belt from around clutch
pulley. See Figure 5.10. Refer to Section "MOWER
DRIVE
BELT
REPLACEMENT
AND
ADJUSTMENT".
2. Turn lock nut out to the end of eyebolt, reducing
spring tension. Unhook traction idler spring from bolt
in frame. See Figure 5.10.
3. Remove anti-rotation bracket. See Figure 5.10.
4. Disconnect
the eIectric clutch from main wire
harness.
5, Remove traction belt from around engine pulley
and hydro pumps.
6, Install new belt and route around engine pulley
and hydro pump pulleys.
7, Reconnect electric clutch to main wire harness.
8, Reinstall anti-rotation
bracket and tighten nuts
securely.
9, Reattach traction idler spring. Run lock nut all
the way to the end of the threads on the eyebolt.
See Figure 5.10.
10. Reinstall mower drive belt onto clutch pulley.
Refer
to
Section
"MOWER
DRIVE
BELT
REPLACEMENT
AND ADJUSTMENT".
UNHOOKTRACTION
REMOVEANTI-
ROTATION
BRACKET
LOCK NUT
REMOVE MOWER DRIVE BELT
FROM AROUND CLUTCH PULLEY
FIGURE 5.10
5.5
BLADE BRAKE/ELECTRIC CLUTCH ADJUSTMENT
The blade switch engages the electric clutch when
pulled out to the "ON" position. When the blade
switch is in the "ON _' position the cutting blade(s)
are engaged.
The blade switch disengages
the
electric clutch when the blade switch is pushed in
to the "OFF" position. When the blade switch is in
the
"OFF"
position
the
cutting
blade(s)
are
disengaged.
The electric clutch is adjustable.
The
blades should stop rotation in 5 seconds or less. If
the electric clutch fails to stop the blades rotation in
5 seconds, adjustment is necessary.
1. Insert a feeler gauge into the three slots on the
electric clutch.
2. Check gap through all three slots in the side of
the clutch. The gap should be set at .015.
3. If gap is incorrect rotate nuts in or out to achieve
the correct gap. See Figure 5.11.
NOTE:
Electric
Clutch
is shown
removed
from
the
machine. Removal is not necessary for adjustment.
GAP SHOULD BE .015
ROTATE NUTS
IN OR OUT
TO ACHIEVE
CORRECTGAP
5.6
FIGURE 5.11
TRACKING ADJUSTMENT
If the machine does not track straight when the
Motion Control Levers are in the maximum forward
speed position, perform the following
adjustment.
Rear tire pressure must be set to 12 PSi before
making this adjustment.
1, Loosen bolts that secure adjustment
plates and
slide plates all the way forward.
Retighten
bolts.
See Figure 5.12.
2, Start machine and drive in smooth flat open area
at maximum forward speed.
3, If machine tracks to the right, loosen bolts that
secure
the
left
adjustment
plate.
Move
plate
rearward to slow the left wheel. Retighten bolts.
4, If machine tracks to the left, loosen bolts that
secure
the
right
adjustment
plate.
Move
plate
rearward to slow the right wheel down. Retighten
bolts. See Figure 5.12.
5, Drive machine
again.
Repeat
adjustment
as
necessary until machine tracks straight.
22
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