< Topic >As it can concatenate with the lawn mower and the axial oscillating member easily, the concatenated state the adapter which can be released quickly and easily is offered with process of lapping job.SolutionsBeing the adapter A which is concatenated with the concatenated section S1 and the output axis J1 is provided on destal side of reel cutter axis S2 of the lawn mower of the axial oscillating member which turns the aforementioned reel cutter axis conversely, cylinder part 10 and the aforementioned concatenated section and concatenated possible operational axis 20 and, it has, on one end side of the aforementioned cylinder part, the aforementioned operational axis advance and retreat it is possibly installed vis-a-vis the cylinder part, the aforementioned output axis and the concatenated possible fixed part are provided on other end side of the aforementioned cylinder part.< Choice figure >Drawing 4【課題】芝刈り機と軸反転装置とを容易に連結出来ると共に、ラッピング作業の過程でその連結状態を迅速かつ容易に解除できるアダプタを提供する。【解決手段】芝刈り機のリールカッター軸S2の端部側に設けられた連結部S1と、前記リールカッター軸を逆回転させる軸反転装置の出力軸J1と、を連結するアダプタAであって、筒部10と、前記連結部と連結可能な可動軸20と、を備え、前記筒部の一端側に、前記可動軸が筒部に対して進退可能に取り付けられており、前記筒部の他端側には、前記出力軸と連結可能な固定部が設けられている。【選択図】図4