1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 154Get this manual
21 123Lightly coat new O-ring with OMC Triple-Guard grease1221 24Install O-ring onto upper main bearing1231 25Rotate cylinder block so crankcase flange faces upRemove rod caps and keep them identified by cylinder numberLubricate the crankpin bearing assemblies and connecting rods with outboard lubricantPlace one half of the bearing assemblies in each connecting rodGently lower the crankshaft and main bearing assembly into place Align upper O-ring in its groove Align main bearings with locating pin Carefully pull each connecting rod into place1241