Simplicity 14HP - Manual (Page 31)

Troubleshooting, Adjustment, Service
,A
WARNING
To avoid serious injury, perform adjustments only
with engine stopped, key removed and tractor on
level ground.
PTO CLUTCH ADJUSTMENT
Adjustment of the PTO clutch is usually not necessary on
new units.
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. See Figure 35. Note the position of the 3 adjustment
windows (A) in the side of the brake plate, then rotate
the pulley so that each of the three rivet joints (visible
inside the gap between the pulley and the brake
plate) is positioned approximately midway between
the three adjustment windows.
3. Insert a feeler gauge through each window,
positioning the gauge between the rotor face and the
armature face as shown in Figure 36.
4. Alternately tighten the adjustment nuts (B, Figure 35)
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 loosen-
ing 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 and is an condition.
Figure 35. PTO Clutch Adjustment
A. Adjustment Window (Qty. 3, one shown)
B. Adjustment Nut (Qty. 3, two shown)
(3) Req’d
Adjustment Nut
6. Check the mower blade stopping time. The mower
blades and mower drive belt should come to a
Figure 36. Feeler Gauge Position
plete stop within five seconds after the electric PTO
switch is turned off.
Blade Brake Check
Mower blades and mower drive belt should come to a
complete stop within five seconds after electric PTO
switch is turned off.
1. With tractor in neutral, PTO disengaged and operator
in seat, start the tractor engine.
2. Look over the left-hand footrest mower drive
belt. Engage the PTO and wait seconds.
Disengage the PTO and check the of time it
takes for the mower drive belt to stop.
3. If mower drive belt does not stop within five seconds,
perform the PTO Clutch Adjustment. If the belt still
does not stop within 5 seconds, see your dealer.
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