Gasoline Engine Engine Series Commercial Turf Series Gross Torque 5.5 lb-ft Horsepower 25 hp Shaft Orientation Vertical Shaft Configuration 1/4 in Drilled 1 in x 3 5/32 in Keyway Tapped 7/16 in-20 Shaft Diameter 1 in Shaft Length 3 1/8 in Start Type Electric Maximum Speed 3 300 RPM Muffler Yes CARB Compliant CARB Compliant Engine Brand Briggs and Stratton Engine Displacement 724 cc Engine Cycle 4-Cycle Overall Depth 19 in Overall Depth Facing PTO 19 in