Re: Gamefisher 7.5hp
Yes and no. Force was bought out by Mercury so you can get Force/Gamefisher parts from your local Mercury dealer. They are not "Mercury" outboard parts, as in a 89 15HP Mercury is not the same thing as a 89 Force (Gamefisher) 15HP, though the parts bag will most likely be marked QuickSilver .
Best thing to do is look up the P/N and call the dealership with the P/N. Don't tell them you are working on a Sears Gamefisher outboard or they parts guy will get a glazed look in his eyes,,, been there, done that. They were assuming I was working on an old Eska style outboard that they don't source parts for and didn't want to even try to look up the parts.
In short
Force = Gamefisher
Mercury bought out Force
Force parts are available at Mercury dealerships
There are a lot of NLA (no longer available) Force parts
Iboats also has some Force parts
Best of luck getting it fixed.