the serial number is on a metal plate attached to the steering unit in front of the motor. I had the same question about a month ago when ordering parts. You might have to move some grime out of the way before you can see it though. I didnt even see it until I took something to scrap the grime off. Hope this helps.
i have a mercury outboard motor the serial# is G034632
what year is this mercury outboard motor serial number OB362432
In order to determine the age of a Mercury outboard, in addition to the the serial number, the horsepower is needed.
what year is my mercury outboard 4.5 hp serial number A104461
There are two items needed to determine the age of a Mercury outboard, the serial number, and the horsepower rating.
A 50 hp Mercury outboard, serial number 2106993 is a 1967 year model.
In order to find the year model for a Mercury outboard, the horsepower, in addition to the serial number, is needed.
A 25hp Mercury outboard, serial number OG027076 is a 1994 year model.
Two things are needed to determine the age of a Mercury outboard, the serial number, and the horsepower rating.
A 65 hp Mercury outboard, serial number 4574019, is a 1976 year model.
To find the year model of a Mercury outboard, both the serial number, and the horsepower of the engine, are needed.
A 90hp Mercury outboard, serial number 6114748 is a 1982 year model.