1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 139Get this manual
10Remove the main bearing screws and the crankcase flange screws
11Turn the powerhead with the intake facing up, and then tap lightly upward on the crankshaft until the crankcase halves begin to separate12Remove crankcase to expose the crankshaft and connecting rods for further disassembly
INotel Pistons, connecting rods, rod bearings, and bearing retainers are wearing parts and seat with operation of the engineBecause of this, it is essential to maintain their original positions at reassemblyUsing an indelible ink marker, mark each connecting rod, cap, and bearing component when they are removed to ensure correct mating upon reassemblyKeep the needles of each cylinder togetherNotel Loosely install cylinder heads to prevent pistons from falling out