... number: 81451 Chain saw Displacement: 45cc Length of guide bar: 18" or 20" Certificate: GS,CE,EMC,EPA,EU1 ... systemRecoiled, iuauelFuel mixed ratio 25:1Lubrication type, saw-chainAutomaticEngine oil tank capacity0.21LFuel tank capacity0.39LLength ... faster and easier starting to save power.* With gas pump design for faster starting, to ... longer time for use. 45cc gasoline chain saw, GS,CE,EMC approved