Hyrdrostatic trans controlled by treadle foot pedal, cruise control standard with left-hand lever. Three range with Hydro Dual Speed, a high/low power. Auto Hydro Dual speed allows automatic control to match load. Stall guard maintains engine RPMs by reducing speed under load. HST response control adjust acceleration rates. Auto throttle advance links engine RPMs to transmission, so that the throttle increases as the speed is increased.