A grass cutter, a grass cutter working unit unit, and a grass cutting method capable of performing a grass cutting operation on the ground surface and a vertical surface by switching the direction of the cutter. The grass cutter 1 includes a main body 10 having a prime mover 101, a power transmission part 105, a pair of running wheels 102, an operation handle 103, and an operation part 104, one end side of which is rotatably attached to the main body part, the other end side A switching frame 11 attached to the main body, a switching portion 11 having a power transmission portion 112 for transmitting power from the main portion to the cutter portion through the switching frame, a cover body 121, a skirt portion 122 provided on the cover main body 121, A cutter section 12 having a rotary shaft section 123 provided at substantially the center of the cover main body and connected to one end of the power transmission section and a cutting blade 124 attached to the rotary shaft section, a substantially U-shaped fork 132 fixed to the cutter section , An interval holding portion 13 having a pair of wheels 131 attached to the fork tip portion, and a support leg 14 having wheels 141 at the front portion and fixedly attached to the side surface of the switching portion.(FIG.カッターの向きを切り換えて地表面と垂直面の草刈作業を行うことが可能な草刈機、草刈機用作動部ユニット、草刈方法を提供する。 草刈機1は、原動機101、動力伝達部105、一対の走行輪102、操作ハンドル103、操作部104を有する本体部10と、一端側が本体部と回動可能に取着され、他端側がカッター部に取着された切換フレーム111、切換フレーム内を通り本体部からカッター部へ動力を伝達する動力伝達部112を有する切換部11と、カバー本体121、カバー本体121に設けたスカート部122、カバー本体略中央に設けられ動力伝達部の一端と接続する回転軸部123、回転軸部に取着された切断刃124を有するカッター部12と、カッター部に固着した略U字状のフォーク132、フォーク先部に取着した一対の車輪131を有する間隔保持部13と、先部に車輪141を有し、切換部側面に固着された支持脚14と、を備える。【選択図】図6
