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Hello Stu - If your tractor is running (not disassembled), the adjustments are free play, and main pressure plate clearance. Free play is set to 1/2" or so of pedal free play by loosening the bolt clamping the pedal to the clutch operating shaft going into the transmission. Shaft is rotated to the correct position with a rod or screwdriver while holding the pedal, and the bolt snugged up. If the free play is now correct, tighten the bolt - HARD. Otherwise, sooner or later the pedal slips on the shaft. With this free play setting the PTO should stop with the pedal about an inch above the footboard. If it's still turning with the pedal clear down, the second adjustment is through the inspection hole under the flywheel housing. Three cap screws with lock nuts, around the perimeter of the clutch. The clearance between the heads and the rear plate determine when the PTO clutch releases. As you press the pedal down, the clearance reduces, and when they contact you feel the extra pressure on the pedal. Factory says .090". We've found that usually is too much - PTO grinds when you try to shift it into gear and it keeps turning with the pedal all the way down - and set ours to .060 or so. You need a GOOD 1/2" wrench, because these are usually set quite firmly and if you strip them you can't do anything more unless you split the tractor. Hope this helps.
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