1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 91Get this manual

1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 91

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Check Valve Reassembly ASSEMBLY (DESIGN I)
2 Install check valves and retainers into fuel pump body

aRetainerPlastic DiscCheck Valve 51530

3 With retainer installed in