Re: 1986 force 15hp fuel pump gasket order?
The set has three gaskets. Two of them are equal (large hole) and one with the large hole like a "halfmoon" (hope you understand what I mean).
From powerhead and out: gasket with large hole - diaphram - gasket with large hole - fuelpumpbody with checkvalves - gasket with "halfmoon" - fuelpumpcover.
You can check it out at ishopmarine.com. "Klick" Mercurystore - Force - 15 Hp (1984-1995) - 1984 thru 1992 - fuelsystem (88A/92B & ser. # E000001 thru E127699