PROBLEM TO BE SOLVED: To prevent decrease of sensitivity of a hand threshing sensor for detecting that an auxiliary holding rod is in a hand threshing posture.SOLUTION: A combine includes an auxiliary holding rod (50), a holding rod (33), a holding rod cover (65), and a hand threshing sensor (70) provided in the inside of the holding rod cover (65). The holding rod cover (65) includes a passage hole (66a) where a pressing member (54) of the auxiliary holding rod (50) side being in a hand threshing posture passes and an elastic board-shaped closing member (75) disposed in this rear side and closing the passage hole (66a). A sensing part (71b) projecting from the body part (71a) of the hand threshing sensor (70) toward the passage hole (66a) is also included. A pressing member (54) of the auxiliary holding rod (50) side swung to the upper part presses the sensing part (71b), and thereby it is switched to a hand threshing mode, a rotational speed of an engine (E) becomes a speed lower than a rated engine speed, and a feed chain (34) is driven.SELECTED DRAWING: Figure 9
