Patent ID: 6761136
Filing Date: 2004-07-13
Classification: F01P,F02B

Abstract:
A portable power working machine comprising:a main housing; an air-cooled internal combustion engine received in the main housing with a cylinder thereof being horizontally disposed and a head portion of the cylinder being orientated rearward; a cooling fan which is adapted to be driven by the internal combustion engine and disposed on one side of the main housing; a guiding wall disposed on one side of the main housing and at a location rear to the cooling fan and projected inward therefrom for guiding cooling air toward the cylinder; an intake passageway formed at the location rear to the cooling fan for introducing air into an air-intake system of the internal combustion engine; and an air-intake port for the intake passageway, the air-intake port being positioned in the vicinity of a root portion of a rear face of the guiding wall.