PROBLEM TO BE SOLVED: To provide a working machine with a highly durable connection part capable of switching between a storage state and a working state, whose extension working part performs a stable rotation operation.SOLUTION: A working machine includes a first cover member provided above a first rotor, a second cover member provided behind the first rotor, which is rotatably connected to the first cover member, a third cover member provided above a second rotor, which is rotatably connected to the first cover member, a fourth cover member provided behind the second rotor, which is rotatably connected to the third cover member, a locking member connected to the fourth cover member, which is pressed against the second cover member in a working state, and a support member connected to the third cover member, which is provided with a first support part for supporting the locking member, and a second support part for supporting the locking member at a position different from the position of the first support part in a pressing direction that the locking member is pressed.SELECTED DRAWING: Figure 2【課題】収納状態と作業状態とを切り替え可能な作業機において、連結部の耐久性が高く、安定した延長作業部の回動動作を得ること。【解決手段】作業機は、第１ロータの上方に設けられた第１カバー部材と、第１ロータの後方に設けられ、第１カバー部材に対して回動可能に接続された第２カバー部材と、第２ロータの上方に設けられ、第１カバー部材に対して回動可能に接続された第３カバー部材と、第２ロータの後方に設けられ、第３カバー部材に対して回動可能に接続された第４カバー部材と、第４カバー部材に接続され、作業状態において第２カバー部材に向かって押圧される係止部材と、第３カバー部材に接続され、係止部材を支持する第１支持部、及び係止部材が押圧される押圧方向において第１支持部とは異なる位置で係止部材を支持する第２支持部が設けられた支持部材と、を有する。【選択図】図２
