Model number: 81450 Chain saw Displacement: 45cc Length of guide bar: 18" or 20" ... typeGasoline engine,2-stroke,one cylinder,air-cooledDisplacement 45cc Engine power 1.75KW Carburetor type DiaphragmaticStarting systemRecoiled, ... 0.375"Weight7kgPacking size48*26*30 cm Features:* Easy start design for faster and easier starting to save power ... more gas, more longer time for use. 45cc gasoline chain saw