Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 473Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 473

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BIGFOOT GEAR HOUSING
9 If backlash is less than the minimum specification, remove shim(s) from in front of forward gear bearing race to obtain correct backlashWhen reinstalling pinion nut, apply