Kawasaki FS691V-S08-S vertical OHV 4-cycle V-Twin engine is 726cc and puts out 23 HP (maximum horsepower). This FS691V has a 1″ x 3-5/32″ (80mm) crankshaft, an electric starter and a charging coil. A muffler is not included with this engine but options may be available for purchase on our website. Being SAE Power Certified, Kawasaki FS Series engines promise to deliver the reliable power needed to accomplish demanding outdoor tasks while keeping emissions down. Ideal for zero-turn mowers and lawn tractors. Buyer protection package provides a three-year commercial engine warranty. 50-State CARB Compliant. All engines purchased from us ship for free and are foam packed for added protection during transit.