PROBLEM TO BE SOLVED: To prevent adverse effects of dust, high heat, etc. on a precleaner while preventing a decrease in intake efficiency of combustion air for an engine. SOLUTION: An upward-opening type operation unit 4 is provided in a side-by-side state with a crop conveying unit 8 for conveying crops harvested by a harvesting unit 3 at the front of the machine body, and a threshing unit 7 and a grain tank 9 are arranged side by side. The exhaust gas processing device 50 for processing the exhaust gas of the engine 5 is provided at a position closer to the crop transportation unit 8 side than the driver's seat 30 in the left-right direction in the driving unit provided below the driving unit 4, An exhaust pipe 53 that guides the vehicle is extended rearward and upward between the threshing unit 7 and the grain tank 9, and is located immediately behind the driver's seat 30 and between the driver's seat 30 and the grain tank 9. A precleaner 67 is provided at a position higher than the driver's seat 30 in between. [Selection diagram] Figure 2【課題】エンジンに対する燃焼用空気の吸気効率の低下を防止しながら、プレクリーナに対する塵埃や高熱等による悪影響を抑制できるようにすることが望まれていた。【解決手段】機体前部の収穫部３で収穫した作物を後方に搬送する作物搬送部８と横並び状態で上方開放型の運転部４が備えられ、脱穀部７と穀粒タンク９とが横並び状態で備えられ、運転部４の下方に設けられた原動部における左右方向で運転座席３０よりも作物搬送部８側の位置に、エンジン５の排ガスを処理する排ガス処理装置５０が備えられ、排ガスを案内する排気管５３が、脱穀部７と穀粒タンク９との間を後上方に向けて延ばされ、運転座席３０の直後方位置であって且つ運転座席３０と穀粒タンク９との間の運転座席３０よりも高い位置に、プレクリーナ６７が備えられている。【選択図】図２
