The original model is no longer available. Very few of the L-head 12.5-13.5hp engines are still available. If you have an electric clutch, you will have to use the alternator and regulator off of your old engine. If you have a fuel tank or fuel pump mounted to your engine, you will also have to use it off of your old engine. The newer OHV engines have the exhaust outlet on the starter side of the engine instead of the carburetor side and may not fit correctly.
