It was the neutral safety switch--I grounded it and now cranks every time---I'm working on my mule 1000-replaced the water cooled blown engine with a 407 cc duramax I had--runs great waiting on a new accelerator cable---have a question for someone--I pulled the engine block off the transaxle and plated it with a home made piece of aluminum--does anyone know how the oil pump in the transaxle is driven--is it by then engine or?? I did refill the required 3.8 quarts of oil--I just want to make sure the gearbox gets enough lubrication--thanks!