Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 454Get this manual
5Install the bearing carrier over the propeller shaft pushing bearing carrier down until it is fully seated 7Insure that the "V" shaped tab aligns with the "V" notch in bearing carrier70714Tab Washer"V" Tab 55429Propeller ShaftBearing Carrier
6Align the bearing carrier "V" shaped notch with the alignment hole in the gear housingInstall the tab washer with the external tab inserted into the hole in the gear housing