1998 Johnson Evinrude "EC" 90, 115 SPL Service Manual, P/N 520209, Page 206Get this manual
Installation
1Coat the driveshaft splines with OMC Moly LubeDo not coat top surface of the driveshaft as lubricant here may prevent seating of the driveshaft in the crankshaft2Apply OMC Adhesive sealant to the lower exhaust housing seal inner surfacesPosition two new seals on the housingApply OMC Triple-Guard grease to the seals' outer surfaces and position the housing on the gearcase
3Slide the gearcase into place making sure the driveshaft engages the crankshaft, the water tube enters the water pump, and the lower inner exhaust housing does not slip out of position
4Apply OMC Gasket Sealing Compound to threads of the gearcase retaining screwsInstall the screws and tighten to the following torques:
inscrews inscrews 22-24 ftIbs(30-33 Nm) 30-32 ftIbs(41-43 Nm)