PROBLEM TO BE SOLVED: To provide a general-purpose combine which can detect the presence or absence of a selection object on an oscillation selection body even though it is constituted to have low strength, reliably and discriminate clipping start or clipping end.SOLUTION: In a general-purpose combine, a fin drive motor (aperture change means) for changing the aperture of a fin 26a, and a first layer thickness sensor 45 (selection object detection means) for detecting the presence or absence of a selection object on an oscillation selection body 22 are provided. According to the detection result of the first layer thickness sensor 45, the general-purpose combine discriminates clipping start or clipping end and for example, outputs instruction to the fin drive motor.COPYRIGHT: (C)2015,JPO&INPIT【課題】低強度で構成されても揺動選別体上の選別物の有無を確実に検出することができ、刈り始め又は刈り終りを判別可能な汎用コンバインを提供する。【解決手段】フィン26aの開度を変更するフィン駆動モータ(開度変更手段)と、揺動選別体22上の選別体の有無を検出する第1層厚センサ45(選別物検出手段)と、を設け、該第1層厚センサ45の検出結果に基づいて、刈り始め又は刈り終りを判別して、例えば前記フィン駆動モータに指令を出力する。【選択図】図2