1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 313Get this manual

1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 313

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Hydraulic System Troubleshooting Support outboard with tilt lock lever when servicing power trim systemAfter debris or failed components have been found (during troubleshooting procedures) disassemble