Shaft Output: Horizontal Shaft Keyway: 0.25 in Shaft End Tapped Diameter in. /Threads per inch: 5/16-24 Shaft Rotation (From PTO Shaft Side): Counterclockwise Crankshaft: Q-type PTO Height: 4.17 in Cylinders qty. : 1 Cylinder Bore: Cast iron Compression Ratio: 9:1 Cooling System: Air cooled Bore: 2.7 in Stroke: 1.8 in Air Cleaner Type: Cyclone Fuel Tank: Yes Fuel Type: Gasoline Fuel Tank Capacity: 3.3 qt Fuel Filter: Fuel tank filler neck strainer Oil Capacity: 0.59 qt Low Oil Shutdown: Yes Lubrication System: Splash Ignition System: Electronic Governor System: Centrifugal mechanical Carburetor: Float, inner vent Throttle Control: Remote (cable) Choke Control: Manual Max. RPM: 3,600 Muffler Included: Yes Auto Compression Release: Yes CARB Approval: Yes Bolt Circle: 3.625 in Mounting Base Length: 6.375 in Mounting Base Width: 3.15 to 3.34 in Dimensions L x W x H in. : 12 x 13.37 x 12.5 in.