Model LHS-YD-52 Discharging Capacity 51.5cc G/N Weight(kg) 18/17 Ignition system CDI Power Type Single cylinder, Two-stroke, Air-cooling gasoline engine Cylinder diameter*Stroke 46mm*31mm Maximum shaft brake power 2.2kw Maximum idling speed 2800r/min Minimum clictch engagement speed 4000r/min Fuel Mixture Ratio 25:1(Gasoline 25: Two-cycle oil FB1) Chain oil Motor oil SAE10W-30 Fuel Tank Capacity 550ml Oil Tank Capacity 260ml Guide Bar Size 18?20?22? Chain Pitch 0.325? Chain Gauge 0.058? Packing dimensions: L*W*H 2/56.5*49.5*32.5cm Chain Model Oregon Chain Quantity/Container 700set/20' , 1600sets/40HQ'