Types: SOHC, natural air cooling, 4-stroke Displacement: 49ml Rated power and relevant rotating speed: 2.0/8500 kW/(r/min) Maximu torque and relevant rotating speed: 2.8/6000 N.m/(r/min) Minimum idle stable rotating speed: 1500+-150 r/min Ignition mode: CDI Starting type: food or power starting Lubricating type: pressure, splash combined type Gearshift type: 4-shift, circular