Model number: 81455 Displacement: 25.4cc Length of guide bar: 12" or 14" Certificate: GS,CE, ... ,one cylinder,air-cooledDisplacement 25.4cc Engine power0.9KW Carburetor type DiaphragmaticStarting systemRecoiled, iuauelFuel mixed ratio 25:1Lubrication type, saw-chainAutomaticEngine oil tank capacity0 ... output, save more gas, more longer time for use. Mini gasoline chain saw