Hey, I have an Evinrude outboard that is in good shape, but the cover has no decals or numbers. I'm guessing is a 35ish HP, bit I have no idea, and I can't find any model number on it. The number 122-18-3465 is hand etched on the flywheel, carb filter housing, and the top of the lower end, just below the engine. Does this number mean anything? I'll try to post some pictures