1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 224Get this manual
Water Pump Servicing10, 14, 25 Comm 28 Disassembly 1Remove gearcase as described in Gearcase Servicingthis Section Remove the four impeller housing screws with washersSlide the impeller housing and impeller up and off the driveshaftRemove the impeller drive pin 3Pry under the impeller plate to loosen itSlide the plate up and off the driveshaftScrape all gasket material from the plate, gearcase and impeller housing4Remove and discard the impeller housing seal and water tube grommet5Inspect the impeller, plate and housing for excessive wearAssembly Apply OMC Gasket Sealing Compound to the metal casing of new driveshaft sealInstall the seal using OMC Upper Driveshaft Seal Installer, PIN 330655 Install the seal into the impeller housing with lip of seal facing away from the toolCoat the lip of the seal with OMC Triple-Guard grease2Lightly coat the exterior of the impeller cup with OMC Gasket Sealing CompoundInstall impeller housing linerThe liner locks in place in the impeller housing with two square tabs