Single cylinder, forced air cooling,4-stroke gasoline engine Model: GX100 2.5hp Displacement: 97 (cc) Bore Ã? Stroke: 52mm Ã? 46mm Rated Power Output: 1.9HP (1.4)KW / 3600rpm Max. Power Output : 2.5HP (1.8)KW / 3600rpm Torque (N.M): 3.8 / 2500 Compression Ratio: 5.6 : 1 Fuel Tank Capacity: 1.4 (L) Engine Oil Capacity: 0.45 (L) Engine Type: Forced Air-Cooled, 4 Stroke, Single Cylinder Ignition System: Transistor Magneto Starting System: Recoil Start N.W. / G.W. (KG): 9 / 10 Dimension (LÃ?WÃ?H): 310 Ã? 290 Ã? 370 20FT (set): 900