Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 61Get this manual
ACAUTION Eye protection must be worn while removing piston rings 'rom piston7Remove piston rings (a)
9Remove lower crankshaft ball bearing (a) sing universal puller plate, suitable size mandrel (b) and press as shown
IMPORTANT: Do not remove upper or lower ball bear ings from crankshaft unless replacement is necessaryRefer toCleaning and Inspection," following