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Adjustments
How to Checkand Adjust the PTOClutch
Checkthe PTOclutch adjustment after the initial 25 hour
break-in period and then after every 250 hours of operation.
Also perform the following procedure if the clutch is slipping
or will not engage,or if a new clutch has been installed.
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WARNING: Before you make an inspection,
adjustment, or repair to the unit, disconnect the wire
to the spark plug. Remove the wire from the spark
plug to prevent the engine from starting by accident.
1. Remove key from ignition switch and disconnect spark
plug wires to prevent the possibility of accidental
starting while the PTO is being adjusted.
2. Note the position of the 3 adjustment windows (A,
Figures 22 & 23) in the side of the brake plate and the
nylock adjustment nuts (B).
3. Insert a .016"-.018" (0,40-0,45mm) feeler gauge (C,
Figure 23) through each window, positioning the gauge
between the rotor face and the armature face as shown.
4. Alternately tighten the adjustment nuts (B) until the
rotor face and armature face just contacts the gauge.
5. Checkthe 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
armature may vary even after performing the
adjustment procedure. This is due to dimensional
variations on component parts, and is an acceptable
condition.
6. Checkthe mower blade stopping time. The mower
blades and mower drive belt should come to a
complete stop within five seconds after the electric PTO
switch is turned off.
Figure 23: PTOclutch adjustment
A - Adjustment window
B - Adjustment nut
C - .016"-.018" (0,40-0,45mm) feeler gauge
Blade BrakeCheck
Mower blades and mower drive belt should come to a
complete stop within five seconds after electric PTOswitch
is turned off.
1. With parking brake engaged, PTOdisengagedand 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.
Engagethe PTOand wait several seconds. Disengage
the PTOand check the amount of time it takes for the
mower drive belt to stop.
3. If the mower drive belt does not stop within five
seconds, perform the PTOClutch Adjustment. If the
belt still does not stop within 5 seconds, see your
dealer.
w.
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Figure 22: PTOclutch
A - Adjustment window (3)
B - Adjustment nut
English
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