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Adjustments and Service
B
B
Figure 19. PTO Clutch Adjustment
PTO Clutch Adjustment
Check the PTO clutch adjustment after the initial 25 hour
break-in period and then after every 250 hours of opera-
tion. Also perform the following procedure if the clutch is
slipping or will not engage, or if a new clutch has been
installed.
1. Remove key from ignition switch and disconnect
spark plug wires to prevent the possibility of acciden-
tal starting while the PTO is being adjusted.
2. Note the position of the 3 adjustment windows (A,
Figure 19) in the side of the brake plate and the
nylock adjustment nuts (B).
3. Insert a .016"-.018" (0,40-0,45 mm) feeler gauge (C)
through each window, positioning the gauge between
the rotor face and the armature face as shown in
Figure 20.
4. Alternately tighten the adjustment nuts (B, Figure 19)
until the rotor face and armature face just contacts the
gauge.
5. Check the windows for an equal amount of tension
when the gauge is inserted and removed, and make
any necessary adjustments by tightening or loosening
the adjustment nuts.
NOTE: The actual air gap between the rotor and arma-
ture may vary even after performing the adjustment pro-
cedure. This is due to dimensional variations on compo-
nent parts, and is an acceptable condition.
6. Check the mower blade stopping time. The mower
blades and mower drive belt should come to a com-
plete stop within 5 seconds after the electric PTO
switch is turned off.
26
B
A
A
C
Figure 20. Adjust PTO Clutch
WARNING
To avoid serious injury, perform adjustments
only with engine stopped, key removed and rider
on level ground.
Check Mower Blade Stopping Time
Mower blades and mower drive belt should come to a
complete stop within 5 seconds after electric PTO switch
is turned off.
1. With parking brake engaged, PTO disengaged and
an operator in the seat, start the engine.
2. Have an assistant observe the mower drive belt
through the opening between the frame and top of
mower deck. Engage the PTO and wait several sec-
onds. Disengage the PTO and check the amount of
time it takes for the mower drive belt to stop.
3. If the mower drive belt does not stop within 5 sec-
onds, see an authorized dealer.
B
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