1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 225Get this manual
rtil 4then install the water tube grommet into the impeller housingf51 5Lightly coat both sides of new impeller plate lower gasket with OMC Gasket Sealing CompoundPosition gasket on the gearcaseSlide the impeller plate down the driveshaft and position itLightly coat both sides of new impeller plate upper gasket with OMC Gasket Sealing CompoundPosition upper gasket on the impeller plate 161 6