1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 22Get this manual

1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 22

MAINTENANCE
Checking Gear Case Lubricant Level and Refilling Gear Case
1Place outboard in vertical operating position2Remove vent plug from vent hole3Place lubricant tube into the fill hole and add lubricant until it appears at the vent hole

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