1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 187Get this manual

1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 187

Shift Shaft 1Remove spacershift shaft coupler and nylon

4Remove shift cam from housing5Replace shift cam if worn
51117 19221Shift Shaft CouplerSpacerShift Cam

6Remove shift shaft bushing and clip from shift shaft7Replace shift shaft if splines are worn or shaft is twisted

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