PROBLEM TO BE SOLVED: To provide a portable work machine in which replacement work of blades is facilitated when compared with conventional ones.SOLUTION: When a pair of blades 6 is slid toward a left direction in a state that a relative position of an upper blade 8 and a lower blade 9 is temporarily fixed by a temporal fixing pin 21, a front side end part 8c of a cam engaging part 8a of the upper blade 8 is brought into contact with an upper cam board 15. When the pair of blades 6 is further slid from the position, the upper cam board 15 and a lower cam board 16 rotate as the upper cam board 15 is pushed by the cam engaging part 8a so as to complete installation of the pair of blades 6 by the upper cam board 15 and the lower cam board 16 finally come into a lateral straight line.COPYRIGHT: (C)2015,JPO&INPIT【課題】従来と比較してブレードの交換作業が容易な携帯作業機を提供する。【解決手段】仮固定ピン21により上刃8及び下刃9の相対位置を仮固定した状態でブレード組6を左方向にスライドさせていくと、上刃8のカム係合部8aの前方側端部8cが上カム板15と接触する。そこから更にスライドさせていくと、上カム板15がカム係合部8aに押されることにより上カム板15及び下カム板16が回転し、最終的に上カム板15及び下カム板16が横一直線になってブレード組6の取付けが完了する。【選択図】図5
