1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 203Get 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 crankshaft2 Check condition of inner exhaust housing sealReplace the seal if necessaryApply Scotch Grip Rubber Adhesive to inside surface of seal and place seal on exhaust housing Apply OMC Triple-Guard grease to outer surface of seal3Slide the gearcase into place, making sure that the driveshaft engages the crankshaft and the water tube enters the water pump grommet4 Apply GMC Gasket Sealing Compound to threads of gearcase retaining screwsInstall and tighten all the screws to the following torques :
Gearcase Retaining Screw
inscrews
216-240 inIbs 18-20 ftIbs(24-27 Nm) 336-360 inIbs 28-30 ftIbs(38-40 Nm)