GX160UT2XQX2 5.5 HP Engine The Honda 163cc GX160 Series horizontal engine produces 7.6-pound-Feet (10.3 Nm) at 2,500 rpm net torque. Completely redesigned for 2011, the GX160 offers improved fuel economy, lower noise levels, lower vibration, and lower emissions – without sacrificing power output or performance. The new design offers even better fuel economy than before! Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficiency. The overhead valve design means increased efficiency and optimal power transfer. Precision engineered components; reduced piston weight and precision balanced crankshaft all result in lower engine vibration. Honda engines offer proven reliability of the oil alert system, cast iron cylinder sleeve, high quality materials, dual element air cleaner, and fuel valve. The new carburetor chamber coating and carburetor filter help to protect against fuel impurities. Easy, convenient, heavy duty control box and easily accessible spark plug. Easy starting every time with heavy duty recoil starter, ergonomic, easy to grip recoil rope design, and automatic mechanical decompression system. Engine Type: Air-cooled 4-stroke OHV. 68 by 45 mm bore and stroke. Displacement: 163 cm3. Net Power Output: 4.8 HP (3.6 kW) at 3,600 rpm. Net Torque: 7.6-pound-Feet (10.3 Nm) at 2,500 rpm. PTO Shaft Rotation is counterclockwise (from PTO shaft side). Compression Ratio: 9.0 : 1. Lamp/Charge coil options: 25W, 50W / 1A, 3A, 7A. Butterfly carburetor. Transistorized magneto ignition system. Recoil starter starting system. Splash lubrication system. Centrifugal mechanical governor system. Dual element air cleaner. Oil Capacity: 0.61 US quart. (0.58 L). Fuel Tank Capacity: 3.3 US quarts (3.1 liters). Fuel: Unleaded 86 octane or higher. Dry Weight: 33-pounds. (15.1 kg). Common applications: Pressure washers, commercial lawn and garden equipment, tillers / cultivators, generators, construction / industrial equipment, agricultural equipment, water pumps.