Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 253Get this manual
Bearing Carrier Assembly INSTAL LATION(FOR CHECK ING BACKLASHES)
Verify that the "V' shaped tab aligns with the "Vft notch in bearing carrier
Note: If backlashes have already been checked and they Carrier Assemare to specification proceed with bly", 'Final Installation' section found on page 6A-41 1Place the bearing carrier assembly into the gear housingIt may be necessary to turn the drive shaft to align
the teeth of the pinion and the reverse gears
aTab Washer"V' Tab
a Bearing carrier Assembly
70712Align the bearing carrier uV" shaped notch with the alignment hole in the gear housing and then install the tab washer with the external tab inserted into the hole in the gear hallsjng