PROBLEM TO BE SOLVED: To prevent hot blast from the inside of an engine or transmission from directly blowing from a lever guide hole to a driver due to the deformation of the guard member of the operation lever guide structure of a work vehicle.SOLUTION: In the operation lever guide structure of a work vehicle in which an operation panel for performing the various operations of a work vehicle is arranged at right or left side or both sides of a drivers seat, an operation lever is formed so as to be put through the operation panel, and a lever guide hole for guiding the oscillation of the operation lever and a flexible guard member for covering the lever guide hole are arranged, the guard member is constituted of a tabular member, and the position of a slit through which the operation lever passes of the guard member is arranged so as to be biased to a remote side from the drivers seat with respect to a moving route in the longitudinal direction of the operation lever.COPYRIGHT: (C)2013,JPO&INPIT【課題】作業車輌の操作レバー案内構造のガード部材の変形によって、エンジンやトランスミッション内からの熱風がレバーガイド孔から直接運転者に向かって吹き付けることを低コストで防止する。【解決手段】運転座席の左右いずれか一方または両側方に、作業車輌の各種操作をする操作パネルを有し、操作パネルを貫通して操作レバーを設け、操作レバーの揺動を案内するレバーガイド孔と、レバーガイド孔を覆う可撓性のガード部材を備えた作業車輌の操作レバー案内構造において、ガード部材を平板状の部材で構成し、ガード部材の、操作レバーを挿通するスリットの位置を操作レバーの前後方向の移動経路に対して運転座席より遠方側に偏倚して設けた。【選択図】図6