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Looking for operator and service/parts books for this punch James Byrnes International machine.

Press the buttons motor vibrates but knife and clamp dont move. If left alone clamp will drift down and when started up it will return like normal. We have tried cut module, buttons micro switches etc. I even disconnected the hose and pressed the buttons motor ran and pumped oil but when...

Have a old blue 30.5 cutter. Cut/clamp operation runs fine but foot pedal only brings clamp down 1/4". Enough to where the plunger in the rear catches it. If i unscrew the tension spring the clamp drifts and jumps back up.