Maybe I could elaborate a little bit. Just bought this from a coworker. Cleaned up the engine with my garden hose (could hardly see the oil drain plug). Tried to start it the other day and the battery was dead, so I pulled the cables off and put the charger on. The brake pedal was frozen to one of the bushings so I got that freed up for the most part. Presently have most of the body parts off the tractor (fender pan, passenger tower side panel, grille and engine side panels). Not sure what any of this has to do with oil pressure. Where is the oil pressure sending unit, maybe I need to start there ?