1972
1971.
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
The Mercury 650 HP Thunderbolt with serial number 3742317 was manufactured in 1980. Mercury Marine typically used a serial numbering system that can help identify the year of production for their outboard motors. If you need more specific details about the engine, you may want to contact a Mercury dealer or check their records for verification.
Serial number 1999327
An 85 hp Mercury outboard, serial number 3858432, would be a 1973 year model.
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.
1987
1985
1988
To determine the age of a 20 hp Mercury Thunderbolt with the serial number 7139300, you would typically need to consult the manufacturer's production records or a reference guide specific to Mercury outboards. However, Mercury outboards from that era have serial numbers that can often be decoded to find the year of manufacture. Without access to specific databases or records, it's difficult to provide an exact age, but generally, Mercury outboards from that range were produced in the late 1970s to early 1980s.