A switch operation device is for switching between two or more speed change modes of a speed change mechanism by switching a position of a component for use in speed change included in the speed change mechanism, and includes: a main member that is movable between two positions in the switch operation device in an operating direction; a click spring for stopping the main member at one of the two positions; a switch spring that switches the position of the component in conjunction with movement of the main member; a first holding member provided in the main member, and holds the click spring; and a second holding member provided in the main member, and holds the switch spring, wherein when viewed in a direction perpendicular to the operating direction, the first holding and second holding members at least partially overlap with each other.