PORTABLE ENGINE WORKING DEVICE

PURPOSE:To improve the heat radiation efficiency and to facilitate the maintenance by coupling the output shaft of engine and the input shaft of working machine through a perpendicular common shaft, then separating between a high and a low temperature systems by means of an imaginary passing through the common shaft and flowing the cooling air from a low temperature system to a high temperature system. CONSTITUTION:A rotary working machine 200 is disposed below an engine 101 such that the cold air side and the hot air side are arranged respectively to the left and right of a plane normal to the plane of drawing and passing through a perpendicular common shaft A for coupling the output shaft 104 of engine and the input shaft 201 of the rotary working machine 200. Consequently, the engine cooling air is sucked from the low temperature system and passed unilaterally to the high temperature system, thus improving the cooling effect. When dismounting the endcovers, the inspection of muffler 130, cylinder head, plug, etc. and the maintenance of the low temperature system can be facilitated.