Before anyone else posted I was tempted to say it looked like the carb linkage off a lawnmower but I did not want to derail a serious thread.
Well...Ralph Evinrude Sr. did sell the company to Briggs and Stratten in the 1930's and then bought it back so it could be a legacy stamping! Seriously, I'm looking at two wear points on the ears of the stamping like they were stops for something. I first thought it is part of manual choke linkage but by '83 that engine should have a primer/enrichner solenoid so that aint it. I think '83 was the first year for VRO so see if it is some kind of support linkage; curiously you mentioned seeing oil on the deck. See if the VRO pump is just hanging there. Look for a shoulder screw that is laying in the engine pan. By the looks of oily fuzzy gunk on the bracket its been hanging around oil under there. So my guess is VRO pump support bracket...
I'm not sure, but I think that is what holds the turboencapulator in place. Check the unilateral phase detractor and see if the axial venturi vanes are aligned with the analog conductor reluctor. Since this is a 1983, this one has an analog multi-link syncronized doppler multi-switch, and is much simpler than later models. After 1990, the analog system was replaced with a digital non-reversable unit that eliminated the possibility of mulitmode phase dissonance that could, under some conditions, cause reluctor trim to be nonconductive with the encapulator.
Thanks for the help but what does all of that mean in laymans terms. I have pretty much learned the engine as I've repaired it( or tried) but all of those parts seems foreign. Do you maybe have a pic or a way to describe it with out the tech terms. I'm sure in time I will know every part of this engine but for now I pretty much learn it as I go ( on the job training)