1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 254Get this manual
Water Pump Servicing10, 14, 25 Comm 28 Disassembly 1Remove gearcase as described in Gearcase Servicingthis Sectionr:;l 2Remove the four impeller housing screws with washers Slide 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 plategearcase and impeller housing4Remove and discard the impeller housing seal and water tube grommet5Inspect the impellerplate and housing for excessive wearAssembly f21 1Apply GMC Gasket Sealing Compound to the metal casing t=J of new driveshaft sealInstall the seal using OMC Upper Driveshaft Seal Installer, PI 330655 Install the seal into the impeller housing with lip of seal facing away from the toolCoat the lip of the seal with GMC Triple-Guard grease2Install new impeller housing linerThe liner locks in place in the impeller housing with two square tabs r;l Oil the blades of the impellerIn counterclockwise directiontwist the impeller into the impeller housing121