OK. I wrote in a couple weeks ago. PTO quit working on my H while I was mowing. After looking at it, it has an extension on the shaft that appears to be an over ride, or over run clutch. Not sure of the proper term for it. I knew it was there, but always thought it was a conversion from the 20 spline shaft to the 6 spline shaft. To make it a short story, i"m pretty sure that the over ride clutch is the problem. Looks like it"s shot. So now I can"t get it off. I took out the snap ring that looks like it holds it on, but it looks like there is a large washer that should come off, but I can"t get it out. Any suggestions would be appreciated. I hate to cut it off for fear of damaging the PTO shaft. Thanks in advance...