Troubleshooting, Adjustment & Service

PTO Clutch Adjustment

 

 

 

 

 

 

WARNING

 

 

B

 

 

B

 

 

 

 

 

To avoid serious injury, perform adjustments

 

 

 

 

 

only with engine stopped, key removed and

 

 

 

 

 

tractor on level ground.

 

 

 

 

 

 

26HP, 30HP & 37HP Models: All;

 

 

 

 

 

 

32HP Models: S/N: 2013556396 & Below

 

 

 

 

 

Check the PTO clutch adjustment after the initial 25

 

 

 

 

hour break-in period and then after every 100 hours

 

A

 

 

of operation. Also perform the following procedure

 

B

 

 

 

 

 

 

if the clutch is slipping or will not engage, or if a new

 

 

 

 

clutch has been installed.

 

 

Figure 46. PTO Clutch Adjustment

 

 

 

 

 

 

 

1. Remove key from ignition switch and disconnect

A. Adjustment Window (Qty. 3, one shown)

 

spark plug wires to prevent the possibility of

 

B. Adjustment Nut

 

 

 

accidental starting while the PTO is being

 

 

 

 

 

adjusted.

 

 

 

 

 

 

2. See Figure 46. Note the position of the 3

 

 

 

 

B

 

Reproduction

 

 

adjustment windows (A) in the side of the brake

orf

 

 

 

plate and the nylock adjustment nuts (B).

 

 

 

 

 

 

 

 

3. Insert a .016”-.018” (0,40-0,45mm) feeler gauge

 

 

 

 

 

(C) through each window, positioning the gauge

 

 

 

 

 

between the rotor face and the armature face as

 

 

 

 

shown in Figure 47.

Not

 

 

 

 

 

 

 

 

 

 

 

4. Alternately tighten the adjustment nuts (B, Figure

C

 

 

 

 

 

 

 

47) until the rotor face and armature face just

 

Fig re 47. Adjust PTO Clutch

 

 

 

contacts the gauge.

 

 

 

 

 

5. Check the windows for an equal amount of drag

A. Win ow

 

 

 

B. A justment Nut

 

 

 

when the gauge is inserted and removed, and

 

 

 

 

 

C. .016”-.018” (0,40-0,45mm) Feeler Gauge

 

make any necessary adjustments by tightening

 

 

 

 

 

 

 

loosening the adjustment nuts.

 

 

 

 

 

 

NOTE: The actual air gap between the rotor and

 

 

 

 

 

armature may vary even after performing the

 

C

 

 

 

adjustment procedure. This is due to dim nsional

 

 

 

 

 

B

 

 

 

variations on component parts, and is an acc ptable

 

A

 

A

 

 

condition.

 

 

 

 

 

 

 

 

 

 

 

6. Check the mower blade stopping time. See

 

 

 

 

 

BLADE BRAKE CHECK. 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.

 

 

 

 

 

 

32HP Models: S/N: 2013556397 & Above

 

 

 

 

 

If the clutch is slipping or the clutch will not engage,

 

 

 

 

the air gap can be adjusted by removing the re-gap

 

 

 

 

 

shim to allow the clutch to continue to function.

 

Figure 48. PTO Clutch Adjustment

 

 

 

 

 

 

 

1. Loosen both brake mounting bolts (A, Figure 48)

A. Brake Mounting Bolts

 

 

 

1/2 to 1 full turn as shown in Figure 48.

 

B. Brake Pole

 

 

 

IMPORTANT NOTE: Do not remove the brake pole

C. Re-gap Shim

 

(B, Figure 48) from the clutch. The brake pole must

 

remain in the correct position to ensure proper brake

 

torque.

 

43