Electric PTO Clutch
Adjustment
Check the PTO clutch adjustment after 250 hours of operation. Also perform the following procedure if the clutch is slipping or will not engage.
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.See Figure 20. Note the position of the 3 adjustment windows (A) in the side of the brake plate and the nylock adjustment nuts (B).
3.Insert a .012” feeler gauge 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 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 five seconds after the electric PTO switch is turned off (see MOWER BLADE BRAKE STOPPING CHECK, Page 6).
A |
B |
B |
B |
Figure 19. PTO Clutch Adjustment
A.Adjustment Window (Qty. 3, one shown)
B.Adjustment Nuts
Adjustment |
Nut |
Window |
.012” |
Feeler |
Gauge |
(3) Places |
Required |
Figure 20. Feeler Gauge Position
3/2007 | 13 | TP |
