I have a Bobcat 763G. Have changed the battery, terminals, cables, seat bar sensor etc. Now it still locks up. Lights on start station all go off and Bobcat stops. Hydraulics don't work and no forward or reverse. Seat bar light comes back on immediately and you push the start button and everything works fine again. Sometimes it works for hours on end and sometimes only for a few minutes. No error codes show up anymore. There is an audible click from under the floor panel when this happens or more like a clunk. The good thing is I now have a digital multi meter but am not sure where to start AGAIN.