PROBLEM TO BE SOLVED: To provide a mower facilitating replacing a cutting blade while having a simple structure, and capable of preventing pebbles or the like jumped up and flown by the cutting blade from being scattered in mowing work.SOLUTION: A mower includes: a machine body A capable of freely traveling by a front wheel 1 and a rear wheel 2; and a mowing part arranged in the middle between the front wheel 1 and the rear wheel 2 in the front and back direction, and mowing grasses on the ground by being rotated around a drive shaft core Y by drive power of an engine 3. The mowing part removably includes a cover 40 comprising a rotary disk 13 provided in a lower end of a drive shaft 12 driven and rotating around the drive shaft core Y in a vertical posture, and a plurality of cutting blades 14 removably provided in the outer periphery of the rotary disk 13, and covering the outside of a rotation locus of the cutting blade in the middle between the front wheel 1 and the rear wheel 2 in the front and back direction.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】簡単な構造でありながら刈刃の交換を容易に行え、刈取作業時には刈刃等で跳ね飛ばされた小石等の飛散を防止できる草刈機を構成する。【解決手段】前車輪1と後車輪2とで走行自在な機体Aと、前後方向で前車輪1と後車輪2との中間に配置され、エンジン3の駆動力により駆動軸芯Yを中心に回転することにより地面の草を刈り取る刈取部とを備えている。刈取部は、縦向き姿勢の駆動軸芯Yを中心に駆動回転する駆動シャフト12の下端に備えられた回転ディスク13と、回転ディスク13の外周に着脱自在に備えられた複数の刈刃14とを備えており、前後方向で前車輪1と後車輪2との中間で、刈刃の回転軌跡の外方を覆うカバー40を着脱自在に備えた。【選択図】図3