If its just the shear bar you are adjusting, if I remember right, it has four hard surfaced edges. Pull the two main bolts and pull it out the side and see if there are any new edges left on it. Dads 38 had a stone you pulled back and forth over the knives to sharpen them. It was a lot of years back, but it seems to me you removed two 3/8 bolts on the knife drive line so they were free and then put a small chain on two sprockets so the knives spun in reverse. As the blades were spinning backwards you would move the stone back and forth over the knives, giving it a little more tension until the knives were sharp. After sharpening, adjust up the shear bar, so it just has some clearance and no ticking. It almost seems to me that when they were in a hurry they would just run the stone over the knives with it running normal, but it was a long time ago, not sure if you would want to chance doing that. They were an easy pulling chopper, only trouble we had with it was filling the rear of a high dump silage wagon.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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