A
C
B
D
Adjusting the Auto PTO:
Make sure the engine is OFF and remove the negative battery cable to ensure the unit can not accidently be started.
Put the PTO in gear so that the PTO handle is at 90 degrees or pointing straight up.
Locate the throwout arm which protrudes from the clutch housing (Fig. C).
Remove the spring that is attached to the throwout arm and sheet metal.
Grab the end of the throwout arm to check for movement or “play”. When properly adjusted the arm should move
3/4” to 1” when in gear.
If the arm does not move in this range, locate the PTO linkage (Fig. A), then turn the adjuster nut (Fig. B) clock-
wise to increase tension, counter clockwise to decrease tension.
If there is no adjustment left then the clutch disk most likely needs to be checked/replaced.
After adjustment reapply the return spring and negative battery cable.
Units with Clutch Assist Cylinder:
Check for movement in the throw out arm as described above.
If there is not sufficient “play” in the throwout arm check the setting of the clutch assist cylinder. The cylinder may
be impairing the movement of the throwout arm if not properly adjusted.
Adjust the cylinder by turning the adjusting nut (Fig. D) counter clockwise to around setting 7.
Once the clutch assist cylinder is properly adjusted, adjust the PTO as described in the first section.
1.
2.
3.
4.
5.
6.
7.
1.
2.
3.
4.
5.6 Auto PTO Linkage Adjustment
Service Section
Summary of Contents for SCL800SM-3X
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