Working vehicle and tractor

A working vehicle comprising:

• a prime mover that outputs power;
• a drive driven by the power output from the prime mover;
• a transmission mechanism that transmits the power output from the prime mover to the drive;
• a clutch provided in the transmission mechanism and displaceable to a connected state in which the power is transmitted to the drive, a disconnected state in which transmission of the power to the drive is disconnected, and a half-clutch state in which the power is slidably and partly transmitted to the drive;
• a clutch pedal;
• a detector that detects an operation position of the clutch pedal and outputs a detected value corresponding to the operation position detected;
• a control device that brings the clutch into the half-clutch state if the detected value from the detector corresponds with a predetermined threshold, brings the clutch into the disconnected state if the detected value is either one of a value less than the threshold and a value greater than the threshold, and brings the clutch into the connected state if the detected value is the other of the value less than the threshold and the value greater than the threshold;
• an operation member;
• and
• a change unit that changes a value of the threshold to a different value in accordance with an operation on the operation member.