| 摘要 |
PROBLEM TO BE SOLVED: To easily operate a dust-conveyance valve from an opening side when a threshing chamber and a separation chamber are opened by bringing the upper structure of a thresher to an uprising and opening position. SOLUTION: An operation unit 43a of an operation lever 43 for regulating the dust-conveyance valve 16 is protruded to the separation chamber 12 between a back wall 33 of the threshing chamber of the upper structure 30 and an upper cover board 34 of the thresher. COPYRIGHT: (C)2003,JPO
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