Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 148Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 148

FUEL PUMP
5Assemble diaphragm, seal, and cover, to pump body, secure with screws and nutsNOTE: Seal installs in one direction only
Screws (4)CoverCover SealDiaphragmPump BodyNuts (4)