Well assuming that shift handle is original, and the info at MarineEngine is accurate…I’ll say ’62-’67 18 horse Evinrude (I have to double-check a model-year guide but I don’t see a listing for a 20 horse). That style handle changed in ’68, and they don’t show a 25 until ’69.
But those years gear case cavitation plates (”62-’67) were more rounded, so it looks like someone installed a later gear case with the angles on that motor (it looks more greenish like from the ’69-’70 20/25 horse). That style seems to have started around the same time as the change to the more angular handles.
So like Fleetwin said, you have a bit of a Frankenstein, but that’s ok. Those parts work together ok for the most part.
Edit: Ok, so I stand corrected, I just came across a few ’69 Evinrude 25 horses that have the same style handle as yours, so I guess it’s possible it’s a 25 too. 😕
Handle style in 1968
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