1987
what year is mercury 9.9 outboard engine serial number 9495587
1988
The Mercury with serial number 9372470, made in Belgium, was produced in 1977. The serial number indicates the production year, as Mercury used a specific numbering system to track the manufacturing dates of their outboard motors.
From what I can find in serial number tables, your outboard is made in 1975. My refernce: http://www.marinshopen.se/Hj%c3%a4lpmedel/Modellguide/Mercury/3565Hk/tabid/107/Default.aspx
The 20HP Mercury outboard with serial number 9137627 was made in 1979.
The serial number 9137327 for a 20 HP Mercury Outboard is not not listed in the Mercury Marine parts catalog.
To determine the age of a Mercury outboard, you will need to know the engine serial number, and the horsepower rating.
A 9.9 hp Mercury, serial number OG031959, is a 1995 year model outboard.
Two things are needed to determine the age of a Mercury outboard, the serial number, and the horsepower rating.
A 9.9hp Mercury outboard, serial number OB120743, is a 1987 year model.
An 20 hp Mercury outboard, serial number 3143107, is a 1971 year model.
Two items are needed to determine the age of a Mercury outboard, the serial number and the horsepower rating.