2001 Mercury Mariner 50-60HP Factory Service Manual, Page 416Get this manual

2001 Mercury Mariner 50-60HP Factory Service Manual, Page 416

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NON-BIGFOOT GEAR HOUSING

aVent PlugFillDrain Plug 2 Inspect gear lubricant for metal particles (lubricant will have "metal flake" appearance)Presence of fine metal particles (resembling p