Patent ID: 7913799

Claim:
A working vehicle, comprising: an engine mounted to a traveling machine body provided with traveling wheels; a hydraulic variable speed gear shifting a power from said engine; a shift pedal operating so as to increase and decrease a shift output of said hydraulic variable speed gear; a speed returning mechanism maintaining an output of said hydraulic variable speed gear approximately zero; and an accelerator arm operating a speed adjusting mechanism capable of adjusting a rotating speed of said engine, wherein a drive control portion is provided with an accelerator operating lever capable of being maintained at a position operated by an operator, and said accelerator operating lever is coupled to said accelerator arm via an accelerator wire which can be activated only in a pulling direction, wherein said speed returning mechanism has a shift link coupling said hydraulic variable speed gear and said shift pedal, and a speed returning link brought in to contact with said shift link in a direction of returning said shift pedal to an original position by an energizing force of a speed returning spring, and an accelerator coupling arm that is coupled to said speed returning link, wherein said speed returning link is configured such as to be movable in the same direction on the basis of each of operations in a forward moving side and a backward moving side of said shift pedal, and said accelerator coupling arm is coupled to said accelerator arm of said speed adjusting mechanism via a coupling wire that can be activated only in a pulling direction, wherein said speed returning link returns said shift link to an original position on the basis of an operation of releasing a foot from said shift pedal so as to maintain an output of said hydraulic variable speed gear approximately zero, and wherein said shift link operates said hydraulic variable speed gear to a speed increasing side on the basis of a pedaling operation of said shift pedal, and said accelerator arm operates said speed adjusting mechanism to a high rotation side, greater than or equal to a setting of said accelerator operating lever, via said speed returning link, said accelerator coupling arm and said coupling wire, approximately in proportion to an amount of a pedaling operation of said shift pedal.