Product Manual

26
www.simplicitymfg.com
Figure 19. PTO Clutch Adjustment
A. Adjustment Window (Qty. 3 one shown)
B. Adjustment Nut
Figure 20. Adjust PTO Clutch
A. Window
B. Adjustment Nut
C. .016” - .018” (0,40 - 0,45 mm) Feeler Gauge
B
B
B
A
C
A
B
PTO Clutch Adjustment
When to check the PTO clutch adjustment:
• After every 100 hours of operation
• If the PTO clutch is slipping
• If the PTO clutch will NOT engage
• If a new PTO clutch is installed.
Adjusting the PTO Clutch
1. Remove the key from the ignition switch and
disconnect the spark plug wires to prevent the
possibility of accidental starting while the PTO is
being adjusted.
2. See Figure 19. Note the position of the three (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, Figure 20) through each window,
positioning the gauge between the rotor face and
the armature face as shown in Figure 20.
4. Alternatively tighten the adjustment nuts (B,
Figure 19) until the 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
armature may vary even after performing the
adjustment procedure. This is due to dimensional
variations on component parts, and is an acceptable
condition.
6. Check the mower blade stopping time. The
mower blades and mower drive belt should come
to a complete stop within seven (7) seconds after
the electric PTO switch is turned off.
Blade Brake Check
Mower blades and mower deck drive belt should
come to a complete stop within seven (7) seconds
after electric PTO switch is turned off.
1. With the parking brake engaged, the PTO
disengaged and an operator sitting in the seat,
start the engine.
2. Have an assistant observe the mower drive belt
through the open end of the left hand spindle
cover. Engage the PTO and wait several seconds.
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 seven
(7) seconds, perform the PTO Clutch Adjustment.
If the belt still does not stop within seven (7)
seconds, see your dealer.
WARNING
Remove the ignition key prior to
performing adjustments on the unit.
• To avoid serious injury, perform adjustments on
the machine only when the engine is stopped and
the parking brake is engaged.
• Always remove the ignition key, disconnect the
spark plug wire and fasten it away from the
spark plug before performing adjustments on the
machine, to prevent accidental starting of the
engine.
REGULAR MAINTENANCE
Not for
Reproduction