Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 61Get this manual
Removal of Seals 15 Remove (and discard) seals (a) using screwdriver
17Lift sleeve (a) from housing
Removal of Drive Shaft Bearings
16Remove snap ring (a)
Inspect bearing (b)If bearing does NOT roll freely or is rusted, remove (and replace) bearingRemove bearing (b) using suitable puller