PROBLEM TO BE SOLVED: To provide a grass mower capable of enabling an operator to easily confirm whether an operation member normally operates in a collector of the grass mower.SOLUTION: A drive source 56 and transmission members 57, 58, 67 are arranged in an outside front side of a collector 14, and thereby mowed grass can be prevented from entangling the drive source 56 and transmission members 57, 58, 67. The drive source 56 and transmission members 57, 58, 67 can be visually confirmed from outside and assembly and adjustment to the collector 14 can be more easily performed than a conventional constitution arranging the drive source 56 and transmission members 57, 58, 67 in the collector 14. Furthermore, an opening/closing member 71 is opened, thereby drive of the transmission members 57, 58, 67 can be visually confirmed, and confirmation on whether a diffusion member 62 operates normally or not can be performed easily.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2016,JPO&INPIT【課題】草刈機のコレクタの内部で作動する部材が正常に作動しているかを容易に確認可能にすること。【解決手段】収容部14の外部前側に駆動源56および伝達部材57,58,67を配置することにより、駆動源56や伝達部材57,58,67に刈草が絡みつくことが防止される。また、駆動源56や伝達部材57,58,67が外から視認しやすく、収容部14の内部に配置されている従来構成に比べて、収容部14への組付けや調整が外側から容易に行うことができる。さらに、開閉部材71を開けることで、伝達部材57,58,67の駆動を視認することができ、拡散部材62が正常に作動しているかを容易に確認することができる。【選択図】図9