The Honda GX390 is a robust 389cc, single-cylinder, air-cooled, 4-stroke OHV engine, delivering 13HP at 3,600 RPM and 19.5 lb-ft torque at 2,500 RPM. Ideal for heavy-duty applications like stump grinders, pressure washers, and generators, it features a cast iron cylinder sleeve, digital CDI ignition with variable timing, and a dual-element air filter for durability and efficiency. Its fuel-efficient design uses unleaded gasoline with a 6.1L tank, offering reliable performance in harsh conditions. Easy maintenance, low emissions, and a recoil or electric start make it a top choice for professionals