| 摘要 |
PROBLEM TO BE SOLVED: To prevent occurrence of inconvenience of damaging beans in grain discharging operation without incurring complication of a power transmission structure and/or rise in cost.SOLUTION: A structure includes: an accelerator operating tool (A) setting the number of revolutions of an engine; and a commanding part D commanding execution of a first operation mode or a second operation mode. When the commanding part D commands to execute the first operation mode, an engine controlling part 80 sets a first set number of revolutions set by the accelerator operating tool (A) at an engine-control-target number of revolutions to control the actuation of the engine so that the output number of revolutions of the engine does not exceed the first set number of revolutions. When the commanding part D commands to execute the second operation mode, the engine controlling part 80 sets the second set number of revolutions lower than the first set number of revolutions at the engine-control-target number of revolutions to control the actuation of the engine so that the output number of revolutions of the engine does not exceed the second set number of revolutions. |
