PROBLEM TO BE SOLVED: To provide a tractor having a high degree of sealing in which a cloud of dust generated at a machine body side does not enter a cabin side even when an operation lever is operated in a swinging manner.SOLUTION: The tractor comprises: a machine body a cabin mounted to the machine body an operation lever 16a which is swingably supported around a lateral axis of the machine body side and is arranged penetrating through a through-hole 35 provided to a guide member 21 and seal members 39 for sealing the through-hole 35. Each of the seal members 39 includes an elastic member 40 having a sealing surface formed of an abrasion resistant material. And the sealing surfaces of the two seal members 39 are arranged along a swinging direction of the operation lever 16a and are made to face each other across the operation lever 16a to be stuck to each other.COPYRIGHT: (C)2012,JPO&INPIT【課題】操作レバーの揺動操作時においても、機体側で生じた砂埃がキャビン側に侵入しない、密閉度の高いトラクタを提供すること。【解決手段】機体と、機体に搭載されるキャビンと、機体側の横軸周りに揺動自在に支持され且つガイド部材21に設けた貫通孔35に貫通配備される操作レバー16aと、貫通孔35をシールするシール部材39とを備えるトラクタであって、シール部材39が、耐磨耗材からなるシール面を有する弾性部材40を備えて構成されており、2つのシール部材39のシール面を、操作レバー16aの揺動方向に沿うように配置させ、且つ操作レバー16aを挟んで互いに対向させて密着させる。【選択図】図2