Four Vanguard single-cylinder engines were added to the Commercial Power series. With gross horsepower ratings ranging from 5.5 to 10 hp, the engines feature the TransportGuard system that ensures fuel stays where it belongs and helps to eliminate fouled plugs, hydraulic lock, cylinder wash down, and crankcase oil dilution caused by transportation. Additional features include a water-repellant air filter, sediment filter, commercial-style carburetor, and forged crankshaft. Briggs & Stratton Commercial Power. 414-259-5333.