Engine model: OHV, single cylinder, forced air cooling, 4-stroke HP: 5 Max.Power [kW/(r/min)]: 3.6/3600 Max.Torque [N.m/ (r/min)]:6.6/2500 Fuel consumption(g/kw.h):Oil consumption(g/kw.h):Min.stable speed unload(r/min):1500±150 Speed fluctuating(%):10% Noise(db(A)): Bore×Stroke (mm): 64×42 Displacement (ml): 135 Compression Ratio:8.5:1 Lubrication system:Splash Starting system: Recoil start Lgnition system:T.C.I Engine oil Designation: SAE 15W/40(GB11121-1995) Fuel designation: Above Unleaded RQ-90(GB17930-1999) Fueltank capaacity(L):2 Engine oil capacity:0.6 Spark plug clearance(mm):0.7-0.8 Air cleaner:foam filter, Element Dimension(L×W×H)(mm): 470×430×395 Engine oil Capability(L): 14