Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 439Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 439

BIGFOOT GEAR HOUSING
4Lift reverse gear, thrust bearing and thrust washer from bearing carrier5Replace reverse gear if gear teeth or clutch teeth on reverse gear are chipped or wornIf reverse gear must be replaced, pinion gear and sliding clutch should be inspected for damage6Replace thrust bearing and thrust washer if rusted or damaged

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