PROBLEM TO BE SOLVED: To avoid deformation and breakage of an operation lever and a stopper not by increasing strength of the operation lever and the stopper.SOLUTION: A work machine includes a separation mechanism (50C, 60) provided between a left-side rotation shaft 36 and a cutting blade operation lever 50. When the cutting blade operation lever 50 rotates the left-side rotation shaft 36 while advancing beyond a normal rotation position, the separation mechanism (50C, 60) releases force-transmitting connection between the left-side rotation shaft 36 and the cutting blade operation lever 50 to allow the cutting blade operation lever 50 to rotate relatively to the left-side rotation shaft 36.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2018,JPO&INPIT【課題】操作レバーやストッパの強度向上によらずに、操作レバーやストッパの変形、破損を回避すること。【解決手段】左側回転軸36と刈刃操作レバー50との間に離脱機構(50C、60)を設け、刈刃操作レバー50が左側回転軸36を正規の回転位置を超えて回転させようとするときに、離脱機構(50C、60)による左側回転軸36と刈刃操作レバー50との力伝達可能な連結が解除され、刈刃操作レバー50が左側回転軸36に対して相対回転できる状態にする。【選択図】図6
