The Steiner ST-18 Turfmaster is a 4x4 4WD lawn tractor produced from 1980 to 1982 as part of the MPV Series. It is powered by an 18 hp Briggs & Stratton 693cc 2-cylinder air-cooled gasoline engine with a hydraulic drive transmission offering infinite forward and reverse gears. The tractor features an open operator station and a 12-volt electrical system with negative ground.