Engine:single cylinder,two-stroke,air-coolCylinder diameter x stroke: 43mm x 31mmIgnition system: C.D.IFuel: Mixture ( Gasoline 25: Two cycle oil 1 )Fuel tank capacity: 550 (ml)Chain oil: Motor oil SAE#10W-30Oil tank capacity: 260 (ml )Engine displacement: 45 ( cc)Max engine power: 1.8kw / 7500rpmMax engine speed with cutting part: 10000rpmMax engine speed at idling: 2800rpmMax cutting length: 45 (cm)Sprocket:7T x 0.325Saw chain type: Carlton/Tiger/OregonSaw chain pitch: 0.325/0.375(in)Saw chain gauge: 0.058/0.063(in)Guide bar type: Sprocket noseGuide bar size: 16" / 18"Oil feeding system: Automatic pump with adjusterCompression ratio:7.5:1Net Weight(without guide bar and chain): 5.3kgGross weight(With 18” cutting attachment):6.5KgPacking size:48.5 x25 x30cmPacking quantity:820pcs/20”Fcl,1850pcs/40”HQ