The winding surface of the spool 30 is vertically separated by a first take-up surface 330 and a second take-up surface 350 by a separation plate 34 provided at a central position.A first through hole 33 is formed in the first take-up surface 330.A second through hole 35 perpendicular to the first through hole 33 and perpendicular to the first through hole 33 is formed opposite to the second take-up surface 350.The upper case 10 and the lower case 50 are connected to the first and second case2 bushing 6266The first bushing 62 is left and right and is opposed to the first through holes 33 of the spoolThe second bushing 66 is left and right and is opposed to the second through hole 35 of the spool 30, howeverThe first bushing 62 is arranged orthogonally to theAfter the center position of the first nylon cutter (N1) having a predetermined length is wound in the first take-up surface 330 in the state where it is positioned in the first through hole 33, it is repeatedBoth ends of the first nylon cutter (N1) are exposed to the outside through the first lead out groove 63 of the first bushing 62 and are exposed to a predetermined length.After the second position of the second nylon cutter (N.sub.2) having a predetermined length is wound on the second take-up surface 350 in a plurality of times in the second through hole 35, both ends of the second nylon cutter (N2) are exposed to the outside through the second lead out groove 67 of the second bushing Provides a 4-line nylon cutter assembly for a mowing machine.Diagramスプール３０の巻取面は中央部位に設けられる分離板３４によって第１巻取面３３０と第２巻取面３５０で上下分離され、第１巻取面３３０には相互対向する第１貫通孔３３が形成され、第２巻取面３５０には第１貫通孔３３と垂直でΔｈ間隔を有して直交する第２貫通孔３５が相互対向して形成されて、前記上部ケース１０と下部ケース５０結合部位には第１、２ブッシング６２、６６それぞれが設置されるが、第１ブッシング６２は左右一対でなされてスプール３０の第１貫通孔３３それぞれと対向して設置され、第２ブッシング６６は左右一対でなされてスプール３０の第２貫通孔３５それぞれと対向するが、第１ブッシング６２に直交しながら設置されて、一定長さを有する第１ナイロンカッター(Ｎ１)の中央部位が第１貫通孔３３に位置した状態で第１巻取面３３０に複数回で巻取された後、第１ナイロンカッター(Ｎ１)の両端部位は第１ブッシング６２の第１引き出し溝６３を通じて外部に一定長さが露出して、一定長さを有する第２ナイロンカッター(Ｎ２)の中央部位が第２貫通孔３５に位置した状態で第
