PROBLEM TO BE SOLVED: To enhance efficiency of reaping threshing work by enlarging storage capacity of a grain tank and facilitate maintenance of an air cleaner.SOLUTION: A front part of a steering seat (15) is arranged on a front upper wall (21) of a front side engine cover (11). A storage part (A) lowering to a lower side is formed in a rear side engine cover (12). The storage part (A) is formed in a portion on a rear side of a rear front wall (31) extending from an upper part of the rear side engine cover (12) to a lower side and on an upper side of a rear bottom wall (33) extending from a lower edge of the rear front wall (31) to a rear side in a side view. An air cleaner (41) filtering air for engine (E) is arranged on the rear bottom wall (33). A first pipeline (44) connecting an exhaust port (41B) of the air cleaner (41) and a suction port (38) of the engine (E) is inserted through a first opening (31A) formed in the rear front wall (31). A rear part of the steering seat (15) faces an upper side of the air cleaner (41).SELECTED DRAWING: Figure 7COPYRIGHT: (C)2018,JPO&INPIT【課題】グレンタンクの貯留容量を拡大して刈取脱穀作業の能率を高めると共に、エアクリーナのメンテナンスを容易化する。【解決手段】操縦席(15)の前部を前側エンジンカバー(11)の前上壁(21)に設け、後側エンジンカバー(12)に下側に沈み込んだ収納部(A)を形成し、側面視で、収納部(A)を後側エンジンカバー(12)の上部から下側に延在する後前壁(31)の後側であって、後前壁(31)の下端部から後側に延在する後底壁(33)の上側の部位に形成し、エンジン(E)用の空気を濾過するエアクリーナ(41)を後底壁(33)上に設け、エアクリーナ(41)の排気口(41B)とエンジン(E)の吸気ポート(38)を接続する第1配管(44)を、後前壁(31)に形成された第1開口部(31A)に挿通し、エアクリーナ(41)の上側に操縦席(15)の後部を臨ませる。【選択図】 図7
