1978
Two things are needed to determine the age of a Mercury outboard, the serial number, and the horsepower rating.
In order to determine the age of a Mercury outboard, in addition to the the serial number, the horsepower is needed.
11.92
Mercury outboard, 8hp, sn A721731 manufactured in 1987.
There are two items needed to determine the age of a Mercury outboard, the serial number, and the horsepower rating.
Your 4 hp Mercury outboard, serial number 2779869 is a 1970 year model.
A 65 hp Mercury outboard, serial number 4574019, is a 1976 year model.
A 25hp Mercury outboard, serial number OG027076 is a 1994 year model.
A 90hp Mercury outboard, serial number 6114748 is a 1982 year model.
An 8 hp Mercury, serial number B387142, is a 1989 year model outboard.
Mercury outboard 115 hp, serial number 2931955, is a 1970 year model.
In addition to the serial number, the horsepower of the engine in question must be known to determine the year model of a Mercury outboard.