1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 299Get this manual

1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 299

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BIG FOOT
2 Inspect gear lubricant for metal particles (lubricant will have "metal flake" appearance)
Presence of fine metal particles (resembling powder) on the drain plug magnet indicates

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