What year is an Evinrude outboard motor model 15RESR with serial number R 08544977?

The Evinrude outboard motor model 15RESR with serial number R 08544977 was manufactured in 1985. Evinrude uses a specific coding system for their serial numbers, and the letter "R" in the serial number indicates the year of production. In this case, 1985 corresponds to the "R" designation.