"ganzrott" wrote
I have a 25 horse O/B manufacture Yamaha. The numbers that I can read
on the side a 25SD, 6L2 S, 104775.

I am interested to see what year this motor is so I can get a manual.

25SD shows up as a 1990 model number he
http://www.boats.net/yamaha/partsyst...990&model=25SD

and he
https://support.yamaha-dealers.com/s...l=3&nyear=1990