Patent ID: 7779792

Claim:
An air-cooled engine comprising: an engine main body including a casing; a cooling fan generating cooling air while the engine main body is driven; and a fan cover covering the cooling fan; wherein the cooling fan and the fan cover are disposed on a lateral portion of the casing, the fan cover is an integrated molded article composed of a fan-cover peripheral wall for forming an outside cover for the cooling fan, and a top board for closing off an end of the fan-cover peripheral wall on the side opposite from the casing, the fan-cover peripheral wall has an internally disposed guide duct guiding cooling air sent from the cooling fan to a specified location in the engine main body, in a first portion of the fan cover that has the guide duct, a proximal portion that is external to an outside surface of the fan-cover peripheral wall and is adjacent to the casing is mounted on the casing by a first fastening member; and in a second portion of the fan cover that is disposed away from the guide duct, the top board is mounted on the casing by a second fastening member that extends from the casing to the top board and passes inside the fan-cover peripheral wall.