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).一種後推式割草機具備一用於調整一外殼(11)在地面上之高度之高度調整機構(20)。該後推式割草機(10)進一步包含:一操作按鈕(54c),其用於將該高度調整機構(20)之一調整操作自一受限狀態切換至一准許狀態;及一高度調整手柄(60),其能夠由一隻手握緊以便當操作該操作按鈕且藉此准許該高度調整機構之該調整操作時升高或降低該外殼(11)。該高度調整手柄(60)經提供至該外殼(11)的一左或右側向部分附近。該操作按鈕(54c)經定位於一允許由握緊該高度調整手柄(60)的該手之一指頭操作之區域中。10...後推式割草機11...外殼11a...前部分11b...後部分12...左前輪、右前輪13...左後輪、右後輪20...高度調整機構21L...左前輪支撐部件21R...右前輪支撐部件22b...彈簧釘銷22L...左後輪支撐部件22R...右後輪支撐部件23...前向連桿24...後部連桿25...連結部件25a...連結部件之前端部分25b...連結部件之後端部分31...支撐軸32...輪軸33...連結銷41...軸承42...輪軸43...連結銷44...上部彈簧釘銷45...彈簧(推進部件)46...變速驅動器47...傳動軸50...鎖定機構51...鎖定凹槽52...鎖定銷53...銷導引部分54...操作部件54c...操作按鈕60...高度調整手柄
