A control value is corrected and learned based on a difference angle Δϕ between a drum shaft conversion spindle integration angle ϕs obtained by converting a detected spindle angle detected by a spindle angle sensor 78 into a drum angle and a detected d...

A power unit includes: a rotation plate 62 that is fixed to an end of a shift drum 50, includes a plurality of recessed portions 63, and rotates together with the shift drum 50; a shift lever 66 that engages with the rotation plate 62; a shift shaft 74 fix...