WASTE STRAW TREATMENT PART STRUCTURE OF COMBINE HARVESTER

PROBLEM TO BE SOLVED: To provide a waste straw treatment part structure of a combine harvester adapted to prevent the exposure of an opening/closing lever from the rear end of a waste straw cutting part while maintaining the operability of the opening/closing lever for operating to open/close an opening/closing cover.SOLUTION: The waste straw treatment part structure of the combine harvester includes the waste straw cutting part 9, and the opening/closing cover 10 switched into a waste straw lead-in state of opening a waste straw lead-in port above the waste straw cutting part 9 around a turning shaft 12a and into a waste straw discharge state of closing the waste straw lead-in port. The turning shaft 12 of the opening/closing cover 10 is integrally provided with an operating arm 23, and the opening/closing lever 14 for operating to open/close the opening/closing cover 10 is pivoted in a swingable manner to the operating arm 23. An engaging part 23a and an engaged part 14a that can fix and release fixation of the relative attitude of the operating arm 23 and opening/closing lever 14 are provided at the operating arm 23 and the opening/closing lever 14 individually, and the opening/closing cover 10 can be switched into the waste straw lead-in state and the waste straw discharge state by the opening/closing lever 14 fixed in the relative attitude with the operating arm 23 by engaging the engaging part 23a with the engaged part 14a.