PROBLEM TO BE SOLVED: To avoid contact between a reaping unit and the ground due to left/right tilting by quickly correcting the left/right tilting even when reaping high is set lower so as not to leave un-reaped culms while harvesting soy beans.SOLUTION: A general purpose combine harvester 1 is capable of harvesting a plurality of kinds of crops and includes horizontal control means for maintaining the left/right tilting angle of the machine body to a prescribed angle, and control parameter changing means for changing the control parameter of the horizontal control means according to a kind of crops. The control parameter changing means changes the control parameter of the horizontal control means so that the responsiveness of the horizontal control means at harvesting soy beans is higher than that at harvesting rice or wheat.
