"Briggs & Stratton 479cc Vanguard V-Twin OHV Horizontal Engine. V-Twin 90 overhead valve design runs cooler, cleaner and more efficiently. More HP output with less displacement and less carbon build-up. Longer valve life and improved fuel economy. Shaft Rotation From PTO Shaft Side Counterclockwise, Mounting Bolt Pattern L x W in. 7 11/16 x 4 1/16, Bolt Circle in. 5, 6 1/2, 7 3/4, Fuel Type Gasoline, Bearing Type Ball, Governor System Mechanical, Ignition System Electronic, Air Cleaner Type Dual element, Charging System Amps 16, Shaft Length in. 2 29/32, Application Compressor, pressure washer, conveyor, Engine Type Vanguard V-Twin OHV, Carburetor Float, Start Type Electric/recoil backup, Engine Displacement cc 479, Shaft Output Horizontal, Fuel Pump No, Bore x Stroke in. 2.68 x 2.60, Choke Control Manual, remote, Cooling System Air cooled, Cylinder Bore Cast iron, Fuel Tank Yes, Muffler Included Yes, Oil Capacity qt. 1.5 48 oz, Throttle Control Adjustable for a constant speed operation, manual friction, remote, Fuel Tank Capacity qt. 9, Lubrication System Full pressure, Shaft End Tapped Diameter in./Threads per inch 3/8-24, PTO Height in. 5 1/4, Dimensions L x W x H in. 12 5/16 x 16 1/8 x 19, EPA/CARB Approval California Air Resource Board No, Max. RPM 3,600, Shaft Diameter in. 1, Cylinders qty. 2, Shaft Keyway in. 1/4. Dura Bore cast iron cylinder sleeve for extended life Float carburetor for consistent easy starting Maintenance-free Magnetron electronic ignition for quick, dependable starts Recoil backup for emergency hand starts Dual Clean air cleaner pleated paper filter with a foam pre-cleaner ensures maximum protection for extended engine life Full-pressure lubrication with spin-on oil filter assures controlled lubrication for extended component life Overhead valve design OHV for cooler operation and longer valve life 12V gear drive starter and 16 Amp DC alternator with starter panel assembly"