| 摘要 |
A grass collecting system having a grass collecting duct for transmitting grass clippings reaped by a mower unit to a grass catcher in a grass collecting position, the grass catcher being swingable to a grass discharge position. The grass collecting duct includes a top plate and right and left side plates for guiding the grass clippings from the mower unit to the grass catcher. An outlet portion is defined by an end of a space surrounded by the top plate and the right and left side plates. A grass clippings discharge path is formed for transmitting the grass clippings received from said mower unit, from the outlet portion ( 6 B) of the grass collecting duct ( 6 ) into the grass catcher ( 5 ). A bottom plate unit ( 63 ) disposed in the outlet portion to be swingable about a pivot shaft ( 73 ) from a guide position for preventing falling of the grass clippings to an upstanding position. The bottom plate unit ( 63 ) has a shortening mechanism for shortening a distance between a forward end of the bottom plate unit projecting into the grass collecting duct ( 6 ), and the pivot shaft.
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