1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 220Get this manual
Water Pump Servicing9.9, 15 Disassembly 1Remove gearcase from exhaust housing as described in Gearcase Servicing, this Section
Remove the four impeller housing screws
r::;] 3Remove the impeller housing and impeller by sliding them
up and off the driveshaftThen remove the impeller drive pin impeller plate
4Remove and discard the water tube' grommet, O-ring and seal in the impeller housing 5Inspect the impeller, housing and plate for excessive wear6Clean the impeller plate and gearcaseAssembly f31 1Apply OMC Gasket Sealing Compound to the metal casing of new driveshaft seal Install the seal in the impeller housing with lip of seal facing into the housingf41 2Apply OMC Adhesive to the impeller housing O-ring and install it on the housing1sl 3Apply Adhesive to outside surface of the water tube grommetInstall the grommet in the impeller housing with bosses of grommet seated in housingCoat the inside surface of grommet with OMC Triple-Guard grease