Briggs & Stratton 3.5 HP Horizontal Engine. Entry market engine is value-engineered for basic needs. This engine has responsive power and reliable performance. Magnetron electronic ignition system ensures dependable starts with no maintenance required. Cartridge-style high capacity snap fit air cleaner uses pleated paper air filter and debris ejection slots to provide superior protection. Lube power lubrication system gear-driven system continuously supplies oil to all internal engine parts for extra protection and long life. Mechanical compression release provides smooth, easy starts and ensures engine reaches maximum power instantly. Aluminized lo-tone muffler is superior in sound reduction and resistant to corrosion. New float style carburetor design provides consistent and easy starting. Improved sealing and no tools required for service. Plastic side fuel tank resists corrosion and freeze-up, which enables long run time. Large gas cap makes it easy to fill the fuel tank. 90-day commercial, 2-year consumer limited warranty. U.S.A. Due to specific regulations, this item is not for sale in the state of California. Customers are responsible for checking local codes and regulations for their specific area. Briggs 3.5 HP air-cooled, 4-stroke, horizontal engine Horizontal Threaded Shaft: 5/8in. x 2 27/64in. Displacement: 9.02 cu. in. Bore: 2.56in. Stroke: 1.75in. 4000 RPM max. Fuel Tank Capacity: 2.2-qt. Oil Capacity: 20-oz. Recoil Start with Easy-Spin compression release Magnetron Electric Ignition Approximate Mounting Base Dimensions: 6.38in. x 3.12in. Flange Mount Bolt Circle Aluminum alloy bore for cooler operation Float type carburetor for consistent easy starting Side valve style engine Maxi-Clean automotive-type air filter Mechanical Compression Release Splash type lubrication PTO supported ball bearing Lo-tone aluminized muffler with guard Plastic fuel tank resists corrosion Includes muffler and exhaust manifold Replacement engine for pumps Dimensions: 11.4in.D x 14.3in.W x 13.1in.H 90-day commercial, 2-year consumer limited warranty