Mercury Mariner Service Manual 6, 8, 9.9 210CC Sailpower, Page 70Get this manual
Crankshaft 1Lift crankshaft assembly from cylinder block2Remove center main bearing halves (a) and sleeve halves (b) from crankshaft andor cylinder block
5Remove (and discard) coupling seal (a)
3Remove upper crankshaft seal (a) and bearing (b)4Remove lower crankshaft seal (c) stufferwasher (d) and retaining ring (e)