The Duromax portable 420cc 1 in. shaft gas-powered recoil/electric start engine is perfect for a variety of applications. It features a cast iron cylinder sleeve for durability and low oil shutoff valve to protect the engine. A recoil start with compression release facilitates easy pulls. This engine gives you the power you need to run a wide range of equipment, including log splitters, pressure washers, go-karts and many other projects.