"With experience born on the raceways and roadways and a dedication to innovation, there's plenty of reasons to insist on the new Honda GX630 V-Twin engine. There's superior engine design, with a 90 configuration that reduces vibration and allows a compact footprint. There's superior construction, with a forged steel crankshaft and an integrated cylinder head. Fewer parts means better durability. There's a digital CDI ignition coil that ensures improved fuel economy and lowered emissions. There's even improved air cleaning, meaning that you can wait 5 times longer between filter changes. Honda even gives their engines a 3-year limited warranty. The image shown is not reflective of the actual item shipped. There is no control panel as shown in the image. Compression Ratio 9.31, Ignition System Electonic, Digital CDI w/variable ignition timing, Bolt Circle in. 5, 6 1/2, 7 3/4, Shaft Keyway in. 1/4, Key size 6.3mm x 50mm, Fuel Pump Boost type, Application Lawn tractor, concrete saw, pressure washer, chipper/shredder, trencher, vibratory roller, ride-on cement trowel, Cylinder Bore Integrated, Choke Control Remote wire, Shaft End Tapped Diameter in./Threads per inch 3/8-24, UNF2B, Engine Type GX series OHV V-Twin commercial-duty, Shaft Rotation From PTO Shaft Side Counterclockwise, Cooling System Air cooled, Throttle Control Remote wire, Torque ft./lbs. 35.2, Lubrication System Full pressure, Engine Displacement cc 688, Low Oil Alert Yes, Oil Capacity qt. 2, PTO Height in. 5 1/4, Dimensions L x W x H in. 15 7/8 x 16 1/8 x 17 3/16, Carburetor 2-barrel, fuel cut solenoid, inner vent, Shaft Diameter in. 1, Muffler Included Not included, Fuel Type Gasoline, EPA/CARB Approval California Air Resource Board Yes, Flywheel Brake No, Shaft Length in. 2 29/32, Start Type Electric, shift type, Shaft Output Horizontal, Fuel Tank Not included, Air Cleaner Type Dual element/Cylindrical, Rated Power HP 20.3, Cylinders qty. 2, Charging System Amps 20, Max. RPM 3,600, Governor System Mechanical, Crankshaft Q-type, Bore x Stroke in. 3.1 x 2.8, Mounting Base L x W in. 7 11/16 x 3 25/64 to 4 21/32. 688cc air-cooled, 4-stroke OHV engine 50-state compliant engine"