Honda GX390

The Honda GX390 is a 389cc, air-cooled 4-stroke overhead valve (OHV) horizontal shaft engine widely used in heavy-duty commercial, construction, and power equipment. It produces roughly 11.7 HP (8.7 kW) at 3,600 rpm and 19.5 lb-ft (26.4 Nm) torque at 2,500 rpm. It features a 6.1L fuel tank, 1.1L oil capacity, and weighs 31.7 kg.