PROBLEM TO BE SOLVED: To provide an implement comprising a member for protecting an oil supply port of a chain case.SOLUTION: An implement comprises: a work body coupled to a rear part of a travel machine body; a chain case provided on a side end surface of the work body, and including therein a chain unit for transmitting motive power to the work body; a cap which is detachably fitted to an oil supply port provided on a surface of the chain case; a protective member for covering an end part of the chain case on a farm field side in work time; and a guard member protruded to a side of the work body relative to the cap from the protective member, the guard member being long in a travel direction of the travel machine body.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】チェーンケースの給油口を保護する部材を備える作業機を提供する。【解決手段】作業機は、走行機体の後部に連結される作業体と、作業体の側端面に設けられ、作業体に動力を伝達するチェーンユニットを内蔵するチェーンケースと、チェーンケースの表面に設けられた給油口に着脱自在に設けられたキャップと、作業時において、チェーンケースの圃場側の端部を覆う保護部材と、保護部材からキャップよりも作業体の側方に突出するガード部材とを備え、ガード部材は、走行機体の進行方向に長手を有する。【選択図】図3