Engine model: 1E46F Power Type: Single cylinder, Two-stroke, Air-cooling gasoline engine Cylinder diameter*Stroke: 52mm*34mm Ignition system: CDI Engine displacement: 72.2cc Maximum shaft brake power: 3.5kw 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: 680ml Oil Tank Capacity: 360ml Guide Bar Size: 20''/22'' Chain Pitch: 0.325'' Chain Gauge: 0.058'' G.W/N.W 6.7/8.7kg External dimensions: L*W*H 450mm*300mm*310mm