I'm working on tightening up the clutch linkage in my "new to me" 420W. I lost all clutch function about 2 weeks ago and knew it had to be something in the linkage. I finally got around to splitting the tractor last Sunday and found that the yoke had slipped off of the adjustment cam that it pivots on (the shaft of the cam was worn and the snap ring missing). This is a fairly easy fix but as long as I'm in there I'd like to figure out why I have so much free travel in my clutch pedal, even after adjusting the cam all the way forward. I've adjusted the pressure plate fingers out to where they are supposed to be, moving them almost 3/16", so that will certainly help. What I question is the "felt washer" that is shown in my parts manual (part # m3633t), it is shown to mount between the carrier and throw out bearing. Mine certainly didn't have one when I disassembled it and I really don't see where it would fit in, the throw out bearing fits the carrier perfectly with no room for anything in addition. I've searched the part # and it doesn't seem to exist or have ever existed. It's a 1958 model, serial #1318xx, and it has the dual clutch for continuous running PTO. Can anybody help?