So new to me machine got a brand new hoepac from the auction. Got it hooked up and hit the go button and it works. I take my thumb off the flow button and it stops and if i push again right away it starts vibrating again. But if i wait a few seconds nothing wont vibrate. If i turn the hyd switch off then back on it works again. If the picture loaded I hooked up the right side line to the return side of the machine.
I would try and contact mfg. to see if they will help you with an installation diagram and instructions.