Arrangement structure of gear position detecting sensor

An arrangement structure comprising a multi-position transmission and a gear position detecting sensor configured to detect a gear position of the multi-position transmission, which gear position is shifted according to a turn motion of a shift drum,

• wherein an end portion of the shift drum is fitted with a first end portion of an elongated shaft configured to be rotated coaxially with the shift drum,
• the arrangement structure comprising:
• a first sensor which is fitted to a second end portion of the elongated shaft and which is configured to detect a turn position of the elongated shaft;
• and
• a second sensor which is located outside in a radial direction of the elongated shaft between the first end portion and the second end portion of the elongated shaft, and which is configured to detect that the elongated shaft is located at a specified turn position,
• wherein:
• the first sensor and the second sensor are fitted from the outside of a transmission case of the multi-position transmission and are exposed to the outside of the transmission case,
• the transmission case has two rotary member receiving portions formed on its surface side, each of the two rotary member receiving portions having peripheral edge portions formed vertically and configured to receive a rotary member rotated in conjunction with an engine to input a driving force to the multi-position transmission,
• and the second sensor is arranged in a receiving depressed portion opened to a lower side of the transmission case at a position between the two rotary member receiving portions.