1998 Johnson Evinrude "EC" 40 thru 55 2-Cylinder Service Manual, P/N 520206, Page 160Get this manual
Thoroughly clean and degrease the crankcase mating flange of the cylinder block with OMC Cleaning Solvent and let air dry 1361
38Apply OMC Locquic Primer to the mating flange of the crankcase and let air dry39Apply OMC Gel-Seal I! 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 bearings
1 OMC Gel-Seal I! has shelf life of at least one year when Note
stored at room temperatureDiscard your OMC Gel-Seal I! if its age cannot be determinedUsing old OMC Gel-Sealllcouid cause crankcase air leaks