I was given a Johnson motor with a 30HP cowling. The stern drive assembly needed replacement so the original i.d. plate was trashed. Can anyone i.d. my motor based on the numbers on the small metal disk on the motor? I suspect it is an early 1990 model based upon one of the junked stern bracket with the number 0325682 (and with 1989 stamped on the opposite side of that bracket).

The numbers on the metal disc are: R82856361.

Thank you.