For the 209M:, On early run models of the 209 reels (1958-1960ish): The idler gear and the levelwind drive gear originally had slightly different
100642 - Horton - Pulley,Idler-75.0 Dia X 50.0
NEW Penn Idle Gear LEVEL WIND 209 209M 209M-LH 210M (P/N 64-209 1184061)
PENN IDLER GEAR #064-209 1184061 64-209 209 210 $12.97 - PicClick
Fits: Level Wind 209, 209LC, 209M, 209M-LH, 210M. For the 209M Penn changed the number on the drive gear to reflect this but the idler gear number was
NEW Penn Idle Gear LEVEL WIND 209 209M 209M-LH 210M (P/N 64-209 1184061)
45N-209 Worm Gear (Newer Diameter) (Brass)
8-Rib, 3.0 Smooth Idler Pulley
PENN IDLER GEAR #064-209 1184061 64-209 209 210 $12.97 - PicClick
For the 209M:, On early run models of the 209 reels (1958-1960ish): The idler gear and the levelwind drive gear originally had slightly different
45N-209 Worm Gear (Newer Diameter) (Brass)
NEW Penn Idle Gear LEVEL WIND 209 209M 209M-LH 210M (P/N 64-209 1184061)