Kawasaki FR691V-S00-S vertical OHV 4-cycle V-Twin engine is 726cc and puts out 23.0 HP (maximum horsepower). This FR691V has a 1″ x 80mm crankshaft, an electric starter and a 15-amp charging coil. A muffler is not included with this engine. Kawasaki FR Series engines bring commercial-grade power to the homeowner. With features like automatic compression release and an internally vented carburetor, FR engines deliver reliable power and efficiency. Ideal for yardwork applications such as riding mowers. Buyer protection package provides a three-year engine warranty. 50-State CARB Compliant. All engines purchased from us ship for free and are foam packed for added protection during transit.