Rotary tilling device

摘要

A rotary tilling device has a cutting device having a plurality of cutters each of which is rotatably mounted on a supporting member. The cutter has a vertical portion and a lateral portion at an end of the vertical portion and has edges on both sides of the vertical and lateral portions. The cutter is held by a stopper in a tilling position when rotated in a tilling direction, and is released in a grass cutting position when rotated in the opposite direction.