... : Gasoline engine,2-stroke,one cylinder,air-cooled Displacement(CC): 51.5Engine power(KW): 2.2Starting system: Recoiled, iuauelFuel mixed ratio ... " saw-chainCog gap :0.325"Packing size(CM):49*26.5*30Net weight(KG):8Precautions1.Must be familar with instruction before ... time,it must start the machine for 5minutes before working.5.After operating,must wait for the chain guide under the ...