1997 Johnson Evinrude "EU" 40 thru 55 2-Cylinder Service Manual, P/N 507265, Page 160Get this manual
Thoroughly clean and degrease the crankcase mating flange of the cylinder block with CIVIC Cleaning Solvent and let air dry 1361 1371
38Apply CIVIC Locquic Primer to the mating flange of the crankcase and let air dry39Apply CIVIC Gel-Seal" to the cylinder block flangeThe application must cover the flange evenly and consistently without being excessiveThe application must not come within in(6,4 mm) of the labyrinth seals or bearingsstored at room temperatureDiscard your OIVIC Gel-Seal" if its age cannot be determinedUsing old OIVIC Gel-Seal II could cause crankcase air leaks40Position the crankcase on the cylinder blockAlign mounting holes and upper main bearing a-ring in grooveInstall six main bearing screws finger tight