1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 150Get this manual

1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 150

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S Use bristle brush and carbon remover solution to remove carbon from side surfacesS tool can be made for cleaning the inner diameter of the tapered ring groovesThe tool can be made from broken tapere