A level winding mechanism includes a worm shaft, an engagement member, a sliding member, and a lid member. The lid member includes lid portion and a retaining portion. The lid portion covers one end of a first through-hole. The retaining portion is tubular shaped and is housed inside the first through-hole. Additionally, the retaining portion is disposed between an inner perimeter surface of the first through-hole and an outer perimeter surface of the engagement member. The retaining portion is capable of slidably and rotatably retaining the engagement member.
