550- PTO

"To adjust the clutch, stop the engine and release the power take-off clutch by pushing the clutch control lever forward. Remove the metal hand hole cover from under the tractor center frame. Reach through the hole and rotate the power take-off clutch assembly until the adjusting ring lock pin is on the bottom side of the assembly. Wit a screw driver, depress the lock pin and totate the adjusting ring to the next notch. Continue to turn the adjusting ring in a clockwise direction to tighten the clutch or counterclockwise direction to loosen the clutch until the clutch is properly adjusted. Then reinstall the hand hole cover.

The power take-off clutch equipped with the 26-inch long control lever and 5 clutch discs is properly adjustd when a force of about 32 pounds applied to the clutch control lever two feet above the control lever pivot is required to engage the clutch or 45 pounds on a 6 disc clutch. On older models having the short 16 inch power take off control lever, a force of 50 pounds is required at the upper end of the lever while pulling back to engage the 5 disc clutch or 67-1/2 pounds for a 6 disc clutch."

Sounds easy. If you have a spring scale like the ones for weighing fish, that will work. Good luck.