PROBLEM TO BE SOLVED: To provide a combine 1 configured such that a narrow guide can be switched between a storage posture in which the narrow guide is stored along a machine body side by an operation arm provided on a machine body front part and an action posture in which the narrow guide is protruded to outside from the machine body side, and a range from the intermediate part to a part near a rear part of the narrow guide can be stored in a lower part of a chain cover of a threshing part regardless of a length of a culm length of a standing grain culm.SOLUTION: An intermediate part (a part near a rear end of a front narrow guide 33) of a narrow guide 22 is coupled to a tip part of an operation arm 38 which rotates in a cross direction and provided on a front part of a travel frame 2 through height suppression means (39), and a posture of the narrow guide is switched to an action posture in which the narrow guide is protruded outward from the machine body side by rotation of the operation arm to outside, and the posture of the narrow guide is switched to a storage posture in which the narrow guide is along the machine body side by rotation of the operation arm to a front side, and in which a range from the intermediate part to a part near a rear part of the narrow guide is stored in a lower part of a chain cover 30 of a threshing part C by the height suppression means.SELECTED DRAWING: Figure 10COPYRIGHT: (C)2020,JPO&INPIT【課題】ナローガイドを機体前部に設ける操作アームによって機体側に沿って収納する格納姿勢と機体側から外側方に張り出す作用姿勢に切り換えできるように構成しながら、立毛穀稈の稈長の長短に関わらず、ナローガイドの中間部から後部寄りを脱穀部のチェンカバーの下方に収納することができる、コンバイン１を提供する。【解決手段】ナローガイド２２の中間部（前ナローガイド３３の後端寄り）を走行フレーム２の前部に設ける前後方向に回動する操作アーム３８の先端部に高さ抑制手段（３９）を介して結合し、操作アームの外側方への回動によってナローガイドを機体側から外側方に張り出す作用姿勢に、また、操作アームの前方への回動によってナローガイドを機体側に沿い、且つ高さ抑制手段によってナローガイドの中間部から後部寄りを脱穀部Ｃのチェンカバー３０の下方に収納する格納姿勢に切り換える。【選択図】図１０
