To allow desirable threshing work to be performed with little troublesomeness even when a type of crop plants, which are a reaping object, is changed.SOLUTION: A combine is provided with a thresher 4 for threshing reaped grain culms in a threshing chamber 23. The threshing chamber 23 is provided with a threshing cylinder 31 that rotates around a longitudinal axis X, and a circular arc receiving net 32 provided along the periphery of the threshing cylinder 31. The receiving net 32 is provided with one or a plurality of receiving net components 43 divided along a circumferential direction. The combine is provided with a position adjusting mechanism that, in a state that a position of one side end part 47 along a circumferential direction of the threshing cylinder 31 in the receiving net component 43 is kept, can adjust and change an interval between the other side end 46 along a circumferential direction in the receiving net component 43 and a rotation locus of the outer end part of the threshing cylinder 31.SELECTED DRAWING: Figure 4【課題】刈取対象となる作物の種類が変更される場合であっても、煩わしさの少ない状態で良好な脱穀作業を行えるようにすることが望まれていた。【解決手段】扱室２３内で刈取穀稈を脱穀処理する脱穀装置４が備えられ、扱室２３に、前後軸芯Ｘ周りで回転する扱胴３１と、扱胴３１の外周部に沿う状態で円弧状に設けられた受網３２とが備えられ、受網３２に、１つあるいは周方向に沿って分割された複数の受網構成体４３が備えられ、受網構成体４３における扱胴３１の周方向に沿う一方側端部４７を位置保持した状態で、受網構成体４３における周方向に沿う他方側端部４６と扱胴３１の外端部の回転軌跡との間隔を変更調節可能な位置調節機構が備えられている。【選択図】図４
