The starter can have 2 field coils, that is not indication of voltage.
BILL, He did those measurements already. He got 2.81, close to 12V number. He got bushing ID at .024 smaller than tech tip number. Bushings don't get smaller with wear. But being "under" a little still indicates 12V.
Don't know if the YY was stamped on starter housing or on a metal tag. If there is a metal tag, don't know if red or black.
