1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 151Get this manual
45Thoroughly clean and degrease the crankcase mating flange of the cylinder block with av'IC Cleaning Solvent and let air dry46Apply av'IC Loequie Primer to the mating flange of the crankcase and let air dry
47Apply av'IC Gel-Seal" to the crankcase mating flange of the
cylinder blockThe application must cover the flange evenly and consistently without being excessiveThe application must not come within 1f4 in(6,4 mm) of crankcase seal rings or bearings NoteGel-Seal" has shelf life of at least one year when stored
at room temperatureTest the Gel-Seal" or replace it if the age of the tube can not be determinedUsing old Gel-Seal II could cause crankcase air leaks
48Lower the crankcase into place49Install main bearing screws finger tight50When the crankcase is seated, install and firmly seat the
crankcase taper pins
51Torque main bearing screws in stages to 18-20 ftIbs(24-27 Nm)Begin with the center screws and work outward in a
spiral pattern36 52Temporarily install the flywheel and key to rotate crankshaft and check for bindingIf binding occurs, tap bottom of crankshaft with rawhide mallet and recheck