I am buying an older Lund boat from my Father-in-law. It is a 1985 model. It has a newer model year Mariner outboard on it Serial Number 0B236205. I went to a dealer today and all he could give me was a range of years from 1990 to now. Give me a break, rather than argue with the twit I left. What is the big secret here. Can anybody identify a Mariner outboards year by its serial number. Any help or a link would be great. Thanks Andy"