A walk-behind lawnmower is provided with a height-adjusting mechanism (20) for adjusting the height of a housing (11) above the ground. The walk-behind lawnmower (10) further comprises an operating button (54c) for switching an adjustment operation of the height-adjusting mechanism (20) from a restricted state to a permissive state; and a height-adjusting grip (60) capable of being grasped by a hand so as to raise or lower the housing (11) when the operating button is operated, and the adjustment operation of the height-adjusting mechanism is thereby permitted. The height-adjusting grip (60) is provided to the housing (11) in the vicinity of a left or right lateral part. The operating button (54c) is positioned in an area allowing operation by a finger of the hand grasping the height-adjusting grip (60).
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