Oil pressure, Temp, and air pressure gauges work. Hour meter has never worked on the unit.
Replaced the battery, Starter and terminals recently. Starts up great in colder weather.Safety switches for the low oil pressure or the over temp have been bypassed before I bought it. I just keep an eye on it. I have been using it for sand blasting and the unit never really needs to run much above idle to make the air that I need for a 100 pound pressure blaster.