A pulley and drive belt system comprising a drive belt and at least one pulley configured to engage a surface of the drive belt, the at least one pulley comprising, a frame configured to rotate about a rotation axis, the frame having a circular outer rim with opposing sides, a plurality of circumferential teeth extending radially and axially of the rim, each tooth having a tooth width and each tooth being configured to be received between adjacent lugs of the drive belt, and an alignment member having a wire form and extending between adjacent circumferential teeth tops, and the alignment member extending no further radially from the rotation axis than the circumferential teeth, a debris ejecting opening disposed radially inward of the alignment member between the circumferential teeth.