The 74-horsepower HDX760 ride-on power trowel has software to control operation of the engine and hydraulics system. The “Itelli-Power” system is a combination of the Bosch-Rexroth hydraulic control unit (HCU) and the Hatz engine control unit (ECU). The HCU communicates with all of the pumps, motors, and valves to ensure maximum performance and safety. It also monitors the hydraulic filter and the hydraulic temperatures. The ECU works with the HCU to maintain maximum efficiency and precise rotor speed. Twin 57.6-inch rotors have six bladed spiders and speeds up to 145 rpm.