The present invention I provide a mower for the rotary blade of nylon code expressions with a nylon cord extending length adjustment mechanism by the simple structure. The apparatus includes a holding member 100 is rotated is attached to the mounting shaft 14 is held a proximal side to the holding member 100, the front end side and the cord-shaped cutting member 4 is brought extending radially outward, and comprising, the holding member 100, a connecting portion 130 to which one end of a cord-shaped cutting member 4 is connected, aligned in the circumferential direction of the holding member 100, a plurality of over-turning portion 140a of cord-shaped cutting member 4 is wrapped around, 140b, It has been provided with 140c a,.【課題】 簡便な構成によるナイロンコード延出長さ調整機構を備えたナイロンコード式の草刈り機用回転刃を提供する。【解決手段】 取付け軸14に取付けられて回転させられる保持部材100と、保持部材100に基端側が保持され、先端側が半径方向外方に延出させられるコード状切断部材4と、を備え、保持部材100には、コード状切断部材4の一端が連結される連結部130と、保持部材100の周方向に並び、コード状切断部材4が掛け回される複数の掛け回し部140a,140b,140cと、を備えている。
