Single cylinder, forced air cooling,4-stroke gasoline engine Model: GX160 5.5hp Displacement: 163 (cc) Bore Stroke: 68mm 45mm Rated Power Output: 4.6HP (3.4)KW / 3600rpm Max. Power Output : 5.5HP (4.0)KW / 3600rpm Torque (N.M): 11 / 2500 Compression Ratio: 8.5 : 1 Fuel Tank Capacity: 3.6 (L) Engine Oil Capacity: 0.6 (L) Engine Type: Forced Air-Cooled, 4 Stroke, Single Cylinder Ignition System: Transistor Magneto Starting System: Recoil Start N.W. / G.W. (KG): 15 / 17 Dimension (LWH): 400 370 375 20FT (set): 520