Jiffy® GASOLINE Powered, 49cc, 4-Stroke OHV Commercial Grade Engine * E-Z Start in cold weather and Quiet - 4 Stroke engine is quiet but powerful. * Low Maintenance - No mixing of fuel * HTT (High Torque Transmission), Jiffy®"s proven heavy-duty clutch and optimum gear ratio, transfer more engine energy for additional torque * Stealth STXTM - Serrated RipperTM Blade and Power Point Blades last 2-3 times longer than other blades on the market, cutting 25% faster. The STXTM Blades have a 3 Year Limited Warranty.