Engine model: 1E34F Power Type: Single cylinder, Two-stroke, Air-cooling gasoline engine Cylinder diameter*Stroke: 34mm*28mm Ignition system: CDI Engine displacement: 25.4cc Maximum shaft brake power: 0.9kw Engine speed: Maximum speed with cutting Attachment 13000r/min Maximum idling speed: 2800r/min Minimum clictch engagement speed: 4500r/min Fuel Mixture Ratio: 25: 1(Gasoline 25: Two-cycle oil FB1) Chain oil: Motor oil SAE10W-30 Fuel Tank Capacity: 230ml Oil Tank Capacity: 160ml Guide Bar Size: 10'/12' Chain Pitch: 1/4' Chain Gauge: 0.050 G. W/N. W 3.5/2.8kg External dimensions: L*W*H 270mm*230mm*215mm