Adjustments
Adjusting the Brakes
Brake service is required if the brake does not stop and hold the tractor effectively. The brake should be effective enough to cause the rear wheels to slide if applied suddenly on a concrete or asphalt surface.
CAUTION: Replace the brake band when the lining is as thin as the ignition key. Replace the brake drum if it is visibly worn or rough.
To adjust the brake:
•Stop the tractor on a level surface.
•Stop the engine and block the wheels so the tractor cannot roll.
•Loosen the jam nut and remove the clevis pin (at the brake band)
NOTE: Do not adjust the brake rod on the left hand side which attaches to the brake pedal. This rod is for adjusting the direction control pedal only.
•Turn the clevis clockwise to tighten or counterclockwise as needed.
•To check the adjustment, reconnect the clevis and brake band with the pin.
•Push the direction control pedal all the way forward.
•Push the brake pedal by hand while watching the motion of the brake band. The brake is correctly adjusted when the band becomes tight on the drum as the direction control pedal moves to “Neutral”. If
the band it tight before the pedal moves to “Neutral”, the brake is too tight. If too tight or too loose, repeat steps 4, 5, 6 and 7 until the correct adjustment is obtained.
•Install the cotter pin in the clevis pin and tighten the jam nut.
•Check the effectiveness of the brake while operating the tractor.
Adjusting the Forward and Reverse Clutches
The forward and reverse clutches must be checked every 100 hours. If the lining has worn to a thickness of less than 0.150 inch (3.8mm), replace the lining. The forward clutch is on the right side of the transmission and the reverse clutch is on the left side of the transmission (Figure 5).
NOTE: Damage will occur if the tractor is operated with a lining thickness of less than 0.150 inch (3.8mm).
Inspect and adjust the clutches as follows:
•Stop the engine and place the direction control pedal in the “Neutral” position.
MEASURE FREE TRAVEL HERE
CLEARANCE
Figure 6: PTO Clutch Adjustment
•Raise the rear fender.
•Measure the clearance in the slot. The correct clearance is .030 inch (.76mm) to .060 inch (1.5mm) for the forward clutch and .010 inch
(.25mm) to .030 inch (.76mm) for the reverse clutch.
•Adjust the bolts which go through the flange on the axle bearing retainer so that the
place with the jam nut. Loosen the jam nut which holds the slide rod bushing in place. Adjust the bushing on the slide rod until the clearance is correct. Lock the bushing in place with the jam nut.
•Lubricate the clutch once each season. Remove the clutch and apply a film of high quality lithium base grease to the splined clutch shaft. While the clutch is off, check the lining wear. If the lining has worn near the rivet heads, replace the lining. Readjust the clutch as described above.
Adjusting the PTO Clutch
The PTO clutch should be adjusted whenever there is less than .5 inches of free travel in the clutch lever when it is in the “On” position. See Figure 6 to see where this free travel is measured. The free travel should be between .5 inch and 1.0 inch.
•Stop the engine and lock the brake.
•Loosen the bolts holding the switch bracket and push the bracket down.
•Raise the rear fender.
•Push the PTO lever to “On”.
•Disconnect the PTO control from the transmission lever.
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