Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 244Get this manual
IMPORTANT: If lower drive shaft ball bearing has been removed, it is recommended that new bearing be installed as the removal process will damage the bearing 3If removed, spread new crankshaft sealing rings just enough to slide over crankshaft journal
1If removed, press new lower crankshaft ball bearing onto crankshaft as shownBe sure bearing is pressed firmly against shoulder
aCrankshaft Sealing Rings