Re: What year is my 20 Johnson outboard
What we need, outlaw, is the model number, not the serial number. That looks too new to me to have a FD series model number(they changed the model number coding about 1970). Your model number might be something like J20E73.
Don't worry about numbers you find making any sense to you. If they did you wouldn't be asking for help, but we have to see the numbers to make any sense out of them. Tell us what numbers you find, and where.