1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 90Get this manual
Fuel Pump RemovalInstallation (Design 1) S Remove hoses from fuel pumpS Remove phillips-head screws lift off fuel pumpS Remove hex-head bolts to disassemble fuel pump
S Attach fuel lines (inlet and outlet)S Attach oil injection hoseS Attach pulse hoseS Secure each hose connection with sta-strap
20427Fuel PumpScrews (2 Each)Bolts (2 Each)
a Inlet Fuel Hose Outlet Fuel Hose Oil Injection Hose Pulse Hose
S Remove gasket from backside (fuel pump base) -replace gasket as necessary check gasket in port area carefully
Fuel Pump Cleaning, Inspection, Disassembly and Reassembly (Design and 2)
S Disassemble by removing hex-head bolts; removedisassemble fuel pump parts
Fuel Pump CleaningInspection