1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, Page 158Get this manual
19Thoroughly clean and degrease the crankcase mating flange of the cylinder block with OMC Cleaning Solvent and let air dry20Apply Locquic Primer to the mating flange of the crankcase and let air dryr:j'9l 21Apply Gel-Seal lito the cylinder block flangeThe application must cover the flange evenly and consistently without being excessiveThe application must not come within V4 in(6,4 mm) of the labyrinth seals or bearings
Gel-Seal II has shelf life of at least one year when stored at room temperatureTest the Gel-Seal II or replaceit if the age of the tube can not be determinedUsing old Gel-Seal II could
cause crankcase air leaks
22Lower the crankcase into place20 23Lightly coat threads of the six main bearing screws with OMC Gel-Seal IIInstall the screws finger tight24When the crankcase taper pmis seated, install and firmly seat the