Poulan Pro PR1842ST Mower, Lawn and Garden Tractor

If you have an electric clutch, you will have to use the alternator and regulator off of your old engine unless you buy an engine with a 9 amp or larger alternator on it. 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 unless you buy an engine with it already on it.