KNAPSACK TYPE POWER WORKING MACHINE

PROBLEM TO BE SOLVED: To provide a knapsack type power working machine capable of sufficiently reducing moistening of the back of a worker.SOLUTION: The knapsack type power working machine 100 comprises: a knapsack member 1 which is shouldered by the worker and faces his/her back; a stand 3 extending rearward from the lower end of the knapsack member 1; a blower 6 mounted on the stand 3; and a back pad member 4 which is attached to the worker's side of the knapsack member 1 and contacts the back of the worker. An intake port 9 for sucking air in a space between the blower 6 and the knapsack member 1 is provided to the blower 6, and an air hole 11 penetrating from a worker's side to the blower 6 is provided to the knapsack member 1. Thereby, the air in the back pad member 4 can be discharged to the side of the knapsack member 1. The surface of the worker's side of the back pad member 4 is composed of an air-permeable material. Thus, moisture generated on the back of the worker intrudes inside the back pad member 4 by a sucking force of the blower 6 and is discharged together with the air inside the back pad member 4.