Patent ID: 7007660

Claim:
A portable power working machine comprising: an internal combustion engine provided, at an air intake system thereof, with an air cleaner; and a working portion to be driven by the internal combustion engine; wherein the air cleaner comprises: a base body case provided with a clean air discharge port for introducing the air cleaned into an intake port of a carburetor, a filter mounted on a filter mounting opening of the base body case so as to seal the filter mounting opening, and a cleaner cover attached onto the filter so as to cover the filter and to guide outside air toward the filter, while giving a predetermined directionality to the outside air; the air cleaner being configured to include a suction port and a suction guiding member both designed to discharge the dust out of the air cleaner through a space formed between the filter and the cleaner cover as the dust adhered to the outside air side of the filter is sucked out at least in part from a negative pressure to be generated by a fan, wherein said cleaner cover is provided with a partitioning plate member for permitting outside air to enter into the air cleaner from an opening formed at the underside of said cleaner cover and for guiding the outside air toward the filter through an upper portion of the partitioning plate member, and the suction port is provided to communicate with a suction opening formed at a lower end portion of space formed between the partitioning plate member and the filter.