Re: Federal outboard
OK, that's a 1972 3.5 hp Eska-built outboard you have there. Here's where I found that:
http://www.discount-marine-parts.com/ob_eska_federals.html
That site has a carb kit for the outboard, and it's a pretty standard 3.5.
The equivalent Eska model, if you decide to call the folks at
www.certifiedpartscorp.com, is 1713D.
Sears didn't sell one with that exact Tecumseh engine, but the model number of their 1972 3.5, with a 642-16 Tecumseh, is 217.58560. You can go to
www.searspartsdirect.com and put that model number in there and see exploded parts diagrams. That model uses the same carburetor kit as yours, and all the mechanical parts will be the same.
Your engine doesn't have a water pump at all. It uses forward motion to push water up a simple water tube, where it cools the exhaust. You won't want to run that engine too long in a tank, since it won't cool properly. Short runs are OK, though, even dry. The engine is air-cooled. Sears has lots of parts for that model, available from that web site.
The engine uses a Champion J-13Y spark plug, and has a simple magneto ignition, parts for which may or not be available from certifiedpartscorp. Sears doesn't have them.
It's a simple little outboard. If you can get it running, it will probably run for some time. Good luck with it.