PROBLEM TO BE SOLVED: To provide a harvester comprising a side cover for covering the lateral side of an air frame thereby to facilitate suppression of the accumulation of dust around an engine.SOLUTION: A harvester comprises: an air supply portion 101 mounted on a side cover 9 for covering a lateral side of an airframe and capable of aerating outward and inward of the air frame a blower mechanism 100 disposed closer on the inner side of the air frame than the side cover 9 for blowing wind from the outer side of the air frame to the inner side and an engine 3 in a state of being adjacent to the airframe inner side of the blower mechanism 100.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2016,JPO&INPIT【課題】機体横側部を覆う側部カバーを備えた収穫機において、エンジン周りでの塵埃の堆積を抑制し易くする。【解決手段】機体横側部を覆う側部カバー9に機体内外方向で通気可能な給気部101が設けられ、側部カバー9よりも機体内側において、給気部101に隣接する状態で機体外方側から内方側へ送風可能な送風機構100が設けられ、送風機構100の機体内側に隣接する状態でエンジン3が配設されている。【選択図】図6