Hitachi RB24EAP. . Features: 23.9cc, 1.13 HP 2-stroke engine for outstanding power. Well-balanced for comfortable use with less fatigue. Class leading air volume at 441 CFM for excellent debris movement with an air velocity of 170 MPH. Large two finger throttle lever for easier operation. Features Pure Fire II low-emission engine technology for more eco-friendly use. Auto-return stop switch automatically resets to "on" position for easier starting.