PROBLEM TO BE SOLVED: To provide a walk-behind working machine capable of achieving, in a simple configuration, a structure eliminating attachment/detachment of a travel wheel-side cover with respect to a cover body.SOLUTION: The walk-behind working machine comprises a position adjusting mechanism 38 capable of changing a position of a travel wheel-side cover 32 with respect to a cover body 31. The position adjusting mechanism 38 includes: a second long hole 65 that is formed on one side of the cover body 31 and the travel wheel-side cover 32 and extends along the rotation direction of a tilling claw 28 a third knob bolt 67 that is positioned at the other side of the cover body 31 and the travel wheel-side cover 32, inserted into the second long hole 65, and fasteningly fixes the cover body 31 and the travel wheel-side cover 32 and guide parts 68 that are provided on the cover body 31 and the travel wheel-side cover 32 and engaged with each other to slidingly guide the movement of the travel wheel-side cover 32.COPYRIGHT: (C)2016,JPO&INPIT【課題】カバー本体に対する走行輪側カバーの着脱が不要な構造を、簡素な構造で実現できる歩行型作業機を提供する。【解決手段】カバー本体31に対する走行輪側カバー32の位置を変更可能にする位置調整機構38が備えられ、位置調整機構38に、カバー本体31及び走行輪側カバー32の一方側に形成され、耕耘爪28の回転方向に沿って延びる第二長孔65と、カバー本体31及び走行輪側カバー32の他方側に位置決めされると共に第二長孔65に挿通されて、カバー本体31と走行輪側カバー32とを締付固定可能な第三ノブボルト67と、カバー本体31と走行輪側カバー32とに設けられ、互いに係合して走行輪側カバー32の移動を摺動案内するガイド部68と、が備えられている。【選択図】図4
