PURPOSE: A mower is provided to adjust height of a mower of the mowing blade by configuring a vibration posture of a supporter while including a handle extended to the rear from a body. CONSTITUTION: A mower includes a mowing blade rotating around a driving axis in the longitudinal direction posture of a body； a front wheel(10) installed in a front part of the body； a handle extended to the rear from the body； a supporter supporting the front wheel is capable of vibrating in the up-and-down direction based on the support axis of the transverse direction posture with respect to the body； and a controlling unit controlling height of mower of the mowing blade by configuration of the vibration posture of the supporter.本發明簡便地構成能夠調整割草高度的調整機構。該調整機構具備有可使前端支撐有前輪(1)的前輪傳動箱(16)以支撐軸芯(Q)為中心擺動自如支撐在移動式機體的前部位置，對該前輪傳動箱(16)的擺動姿勢進行保持的轉換操作部(F)。該轉換操作部(F)，構成為具備：形成有複數卡合孔(82A)的卡合板(82)；對卡合孔(82A)以鎖簧(85)的彈推力卡入的鎖定構件(84)；及可將該鎖定構件(84)朝離開卡合孔(82A)的方向操作的鎖定解除鋼絲(86)。
