Re: help with gamefisher 15hp
OK. If it's an Eska, the fuel pump is a little rubber tube-shaped bladder that goes into the rear of the carburetor. Those frequently split and stop pumping. Also, the carburetor has a little fiber valve element under the cover where the fuel line attached to the carb. If that gets damaged, no pumping can take place, either.
If your outboard is running on a full fuel bowl after priming, but not running when that runs out, suspect the fuel pump, particularly on that model.
The fuel pump elements are available. There's a guy on ebay who sells them...search for Eska parts. Or, you can go to
www.certifiedpartscorp.com, call the number you find there, with your model number in hand, and the guy will sell you an element and the little valve thingie. Get a carburetor base gasket, too.
When you put the pump element in the back of the carb, make sure it goes in with the elongated hole aimed 45 degrees to the left as you look at it. The fiber valve thingie will only go on one way.
Also, those are very weak pumps, and will not pull fuel up more than about 2' reliably. If you have a deep boat, and a long fuel hose, your pump may just not be up to drawing fuel up from the tank against gravity. The whole deal's marginal. I mounted my fuel tank on top of one of the seats on my boat and solved that problem.
It's remotely possible that an air leak in the fuel line or pump bulb might cause this problem, as well, but....you should be able to eliminate that possibility easily through inspection.