What year is my Johnson 20hp outboard model number fd-20c and serial number j2604167?

To determine the year of your Johnson 20hp outboard with model number FD-20C and serial number J2604167, you can refer to the Johnson outboard motor's serial number guide, which typically indicates that the first digit of the serial number represents the year of manufacture. In this case, "J" typically corresponds to 1988. Therefore, your outboard motor is likely from the year 1988.