Item No.: RZ5200 Engine Model: 1E46F Power Type: Single cylinder, Two-stroke, Air-cooling gasoline engine Cylinder diameter X Stroke: 46mmX31mm Ignition system: CDI Engine displacement: 51.5cc Maximum shaft brake power: 2.2kw Engine speed: Maximum speed with cutting attachment: 13000r/min Maximum idling speed: 2800r/min Minimum clutch engagement spped: 4000r/min Fuel mixture ratio: 25:1(Gasoline 25: Two-cycle oil 1) Chain oil: Motor oil SAE 10W-30 Fuel tank capacity: 550ml Oil tank capacity: 260ml Guide bar size: 18"/20"/22" Chain pitch: 0.325" Chain