I have a Kubota B7100 4x4 tractor that is powered by a three cylinder diesel. It has four speeds high and low. Just put in new clutch, presuure plate and throw-out bearing. Also put new paint and tires on tractor. All fluids have been changed with new fluids. The tractor has 2400 hour on it. Runs and works like a new one. This tractor was built to last. It is a 1977 tractor. Not Hydrostatic.