1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 141Get this manual

1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 141

Powerhead Disassembly 1Remove fuel pump by removing screws2Remove oil injection pump by removing bolts3Remove hoses to fuel pump and oil injection pump
5Remove thermostat housing and components
25907 Bolts Thermostat Cover Thermostat Poppet Valve

6Remove cylinder block cover19056ScrewsBolts

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