Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 358Get this manual
7Press on the oil seal driver until the driver bottoms onto the aft face of the bearing carrier 10Press the oil seal with the driver until the driver bottoms out on the bearing carrier
50315Oil Seal Driver (91-31108)Oil SealBearing CarrierDriver (short end)Oil Seal (lips toward driver shoulder)Bearing Carrier
8Apply thin film of Loctite 271 (92-809820) to the outer diameter of the second seal9Assemble the second seal (with the lips of the seal faCing the driver shoulder) onto the short end of the driver