1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 26Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 26

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MAINTENANCE
Checking Lubricant Level and Refilling Gearcase
1 Place outboard in vertical operating position2 Remove vent plug from vent hole3 Place lubricant tube into the fill hole and ad