The Honda 390cc GX Series OHV commercial-grade engine is designed for the most demanding commercial applications. It has set an industry standard for reliability and durability. Overhead Valve design offers cooler, fuel-efficient operation and cast iron cylinder sleeve provides longer service life. The GX is reliable, easy starting and quiet running. Meets EPA and CARB emission levels standards. This legendary engine has earned the reputation as the preferred engine for construction equipment. Common applications include pressure washers, compressors, go-karts, log splitters and chipper/shredders. Displacement (cc): 390, Shaft Dimensions Diameter x L (in.): 1 x 3 31/64, Application: Pressure washers, compressors, go-karts, Shaft Output: Horizontal, Engine Type: OHV, Start Type: Recoil, Mounting Base L x W (in.): 7.7 x 3.39 to 4.06, Bolt Circle (in.): 5, 6.5, PTO Height (in.): 5.3, Shaft Keyway (in.): 1/4, Shaft End Tapped (in.): 3/8-24, Max. RPM: 3,600, Ignition System: Transistorized magneto, Fuel Tank Capacity (qt.): 6.4, Oil Capacity (qt.): 1.16, Air Cleaner Type: Dual element, Low Oil Alert: Yes, Shaft Rotation (From PTO Shaft Side): CCW, Cylinder Bore: Cast iron, Dimensions L x W x H (in.): 16 x 17.4 x 17.2 Honda 390cc GX OHV air-cooled, 4-stroke, horizontal engine Automatic decompression for easy starting Heavy-duty ball bearing supported crankshaft Double walled heavy-duty tank with in tank fuel strainer Manual throttle and choke Remote wire throttle and choke conversion possible with additional components