Yamaha 50DEO info needed

[dwrjr]

Hello,
I just bought a Yamaha 50HP, plate says it's a 50DEO. I have found very little info on web about this motor. Is there another model that is very close to it, that would give me usable information?

[jb123]

this is the closest i see....

6H5 1983- 50D/DRO/DETO