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1971.
1972
Thank you for your reply, the HP is 7.6 Mercury Thunderbolt In order to determine the year model for a Mercury outboard, in addition to the serial number, the engine horsepower is needed as well.
the serial number is 6548158
Serial number 1999327
An 85 hp Mercury outboard, serial number 3858432, would be a 1973 year model.
1987
1988
1985
In addition to the serial number, the horsepower rating is needed to determine the year model.
Merc 850 854590512 thru 4831998 1977
what year is mercury 9.9 outboard engine serial number 9495587