Engine: single cylinder, two-stroke, air-cool Ignition system: C.D.I Fuel: Mixture ( Gasoline 25: Two cycle oil 1 ) Fuel tank capacity: 310 (ml) Chain oil: Motor oil SAE#10W-30 Oil tank capacity: 210 (ml ) Engine displacement: 38 ( cc) Maximum engine power: 1.2kw / 7500rpm Maximum engine speed with cutting attachment: 10000rpm Maximum engine speed at idling: 2800rpm Maximum cutting length: 40 (cm) Sprocket: 7T x 0.325 Saw chain type: Carlton/Tiger/Oregon Saw chain pitch: 0.325/0.375(in) Saw chain gauge: 0.058/0.063(in) Guide bar type: Sprocket nose Guide bar size: 14" / 16" Oil feeding system: Automatic pump with adjuster Compression ratio:7.5:1 Net Weight(without guide bar and chain): 3.5kg Gross weight(With 16"cutting attachment):4.4Kg Packing size:48.5 x25 x30cm Packing quantity:820pcs/20"Fcl,1850pcs/40"HQ