I contacted Mercury Marine outboard division and they answered within a week. Very good response.
It a 1976 Canadian built motor
A 9.9 hp Mercury outboard, serial number OA927309, is a 1987 year model.
A 15 hp Mercury outboard, serial number OG156835, would be a 1995 year model.
The serial number 0A750847 indicates that the Canadian Mercury outboard was manufactured in 1980. The "0" typically designates the year, while the "A" indicates the production month, which corresponds to January. Therefore, this outboard motor is from the early part of the 1980 production run.
its a 1971
The serial number 6615004 for a 75hp Mercury outboard motor indicates that it was manufactured in 1979. Mercury Marine typically uses a system where the first two digits of the serial number can help identify the production year, and in this case, it corresponds to the late 1970s. For precise details, you can also refer to Mercury's official documentation or contact a dealer.
I have a 35 hp mercury twin sn 8382178
A 65 hp Mercury outboard, SN 6315551 would be a 1976 year model.
A 9.8 hp Mercury outboard, serial number 3270176, would be a 1972 year model.
In order to determine the year model for a Mercury ouboard, the serial number, which is listed, and the horse power rating is needed.
I'm thinking it's sometime in the late 80's