1998 Johnson Evinrude "EC" 90, 115 SPL Service Manual, P/N 520209, Page 153Get this manual
45Thoroughly clean and degrease the crankcase mating flange of the cylinder block with OMC Cleaning Solvent and let air dry46Apply OMC Locquic Primer to the mating flange of the crankcase and let air dry47Apply OMC 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 in(6,4 mm) of crankcase seal rings or bearings 1 Gel-Seal" has shelf life of at least one year when Note
stored at room temperatureTest the Gel-Seal" or replace it if the age of the tube can not be determinedUsing old Gel-Sealllcouid cause crankcase air leaks48Lower the crankcase into place
49Install main bearing screws finger tight50When the crankcase is seated, install and firmly seat the crankcase taper pins51Torque main bearing screws in stages to 18-20 ftIbs(24-27 Nm)Begin with the center screws and work outward in spiral pattern
52Temporarily install the flywheel and key to rotate crankshaft and check for bindingIf binding occurs, tap bottom of crankshaft with rawhide mallet and recheck53Install the crankcase flange screws and torque to 60-84 in Ibs(7-9 Nm)