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It was Paul in MN who posted it, at the link below. It's in the body of text in the post 6th down from the top on that page (I think). Here is the relevant passage, quoted: "As to the clutch problem, I have had that happen somewhat often in among the 6 or so 8n's that I service for other people. One guy tried crossing the creek and nearly filled the bell housing with water. Let me tell you, the clutch rusted tight on that one. Usual wisdom would be to split the tractor and clean the flywheel and pressure plate of rust and replace the clutch disc. A bunch of work, and about $100 in parts as I see it. So I tried a different approach, figuring that I could always go back to this solution. Being as it was an early 8n without the hole in the side of the bell housing that the later ones have for the timing marks, well, I took a good guess as to where, and then drilled a 1/2" hole in the side of the bell housing casting, hoping to line up with the fiber clutch disc. I guessed good enough to get a long 3/8" tapered punch in the hole and up against the side edge of the clutch disc, and gave it a smart whap with BFH (Big Friggin Hammer)while the clutch pedal is depressed, and then rotated the engine about 90 deg, and repeated the whapping , and another 90 deg, etc. It popped loose, freed from its prison of rust. Now the tractor could be run, but the clutch was real jumpy, so I nudged the front bumper up against a stout tree and deliberately "burned the clutch" by running it in 4th gear with partial engagement. That cleared enough of the rust that the clutch was now smooth and predictable. Problem solved, cost almost nothing. Put cork plug in drilled hole to keep rain water out."
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