Briggs and Stratton 550 Series engine runs cooler and cleaner, delivering more power, smoother operation, longer engine life and improved fuel economy. Excellent performer for mid-duty applications. Dura-Bore(r) cast iron cylinder sleeve for extended life, float carburetor for consistent, easy starting, maintenance-free Magnetron(r) electronic ignition for quick, dependable starts, Maxi-Clean(tm) automotive-type pleated paper air filter provides superior protection for long engine life, dual oil filter and drain, dual ball bearings that reduces wear for longer life, 50-state compliant engine, buyer protection package provides two-year consumer warranty.