1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Manual, P/N 507266, Page 151Get this manual
9Using tool as drawn on Page 4-8, or equivalent, push crankcase taper pin toward intake manifold surfaceDo not use any tool smaller than taper pin bore to remove the pin10Loosen in stages and remove the main bearing screws and nutsRemove the crankcase flange screws11 Using rawhide or rubber mallet, tap upward on crankshaft to separate the crankcase and cylinder block12Lift straight up and remove crankcase
13Using an indelible marker, identify each connecting rod cap, connecting rod, and piston by cylinder numberMark them No1 thru No.3 starting at the flywheel end14Using OMC Torquing Socket, PI 331638, loosen in stages the rod cap retaining screwsDO NOT remove the screws