Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 56Get this manual

Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 56

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Gear Housing Removal
Remove spark plug lead from spark plug Close fuel shutoff valve Tilt engine to fullUp" positionRemove bolts (a)and pull gear housing from drive shaft housing
Draining