Briggs & Stratton's ReadyStart® system helps take the frustration and guesswork out of starting your lawnmower. On engines equipped with the ReadyStart® system, an automatic choke senses the engine temperature and delivers the exact amount of air and fuel mixture to the carburetor at start-up. For you, ReadyStart® means no more priming, no more choking, and no more guesswork. Just pull for power! See what homeowners think about this easy starting feature. Less