Farmall Cub

Hi Guys, I took my J4 mag off my cub today to tune up and I am a little confused . Does the rotor come off the rotor gear or is it all the same piece? And where might I find one if thats the case. I have new points, condenser,Coil,and Cap. I could not find a listing for a Rotor.
JON

Jon, the gear is part of the rotor. If you have no Case IH dealer close by, you can try Carter & Gruenewald online at http://www.cngco.com or http://www.magnetoparts.com

Jon. The part # for your rotor is 351692R91........