PROBLEM TO BE SOLVED: To provide a portable operation implement, in which in tool less structure upon blade exchanging operation of the portable operation implement, pertinent screw torque is managed upon screwing so as not to break main body due to excess screwing and so that the blade may be attached pertinently.SOLUTION: A portable operation implement comprises: a blade holder supporting first and second blades; an attachment object part which is arranged on housing and on which screw part is formed; a knob screwed into the attachment object part so that the first and second blade and the blade holder are pressed onto the housing to hold them detachably; and clutch mechanisms 18, 20, 21 limiting excess press over predetermined level by knob, thus realized is a construction in which blades are attached with pertinent rotation torque upon blade exchanging operation.SELECTED DRAWING: Figure 6
