serial #

[osprey02]

I just bought a used 9.9 yamaha long shaft 4 stroke converted to electric start. Not sure of the year?

Where do I find the serial number? and a link to decode it?

 

[99yam40]

Re: serial #

most motors have a tag on the port mounting bracket, but I am not sure on 4 strokes
Try this site to help you understand the letters and numbers http://www.boats.net/parts/search/Yamaha/Outboard/parts.html