PROBLEM TO BE SOLVED: To provide a combine harvester having changeover means capable of changing over a driving direction of a reaping pretreatment device without widening a width in a lateral direction of a machine body, and a threshing device including a cutting processing chamber capable of preventing widening of the width of the machine body.SOLUTION: There is provided changeover means (24) comprising a normal direction driving device (A) for transmitting rotation of an engine (E) to a reaping pretreatment device (4), and a reverse direction driving device (B) for changing the rotation of the engine (E) to the reverse direction and transmitting it to the reaping pretreatment device (4). The changeover means (24) is arranged in a notched space (30) formed at a front right side of a threshing device (3), and the reverse direction driving device (B) is arranged at a right side of the normal direction driving device (A).SELECTED DRAWING: Figure 5COPYRIGHT: (C)2017,JPO&INPIT【課題】機体の左右方向の幅を拡大することなく刈取前処理装置の駆動方向を切り換える切換手段を備えたコンバインを提供する。発生を防止することができる切断処理室を備えた脱穀装置を提供する。【解決手段】刈取前処理装置(4)にエンジン(E)の回転を伝動する正転駆動装置(A)と刈取前処理装置(4)にエンジン(E)の回転を逆転回転に変更して伝動する逆転駆動装置(B)からなる切換手段(24)を設け、切換手段(24)を脱穀装置(3)の前部の右側に形成された切欠空間(30)に配置し、逆転駆動装置(B)を正転駆動装置(A)の右側に配置ことにより解決される。【選択図】図5
