Engine model: 1E39F Power Type: Single cylinder, Two-stroke, Air-cooling gasoline engine Cylinder diameter*Stroke: 39mm*30mm Ignition system: CDI Engine displacement: 35.8cc Maximum shaft brake power: 1.1kw Engine speed: Maximum speed with cutting Attachment 13000r/min 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: 290ml Oil Tank Capacity: 230ml Guide Bar Size: 12"/14"/16" Chain Pitch: 3/8" Chain Gauge: 0.050" G. W/N. W 4.25/3.5kg External dimensions: L*W*H 270mm*230mm*215mm