1998 Johnson Evinrude "EC" 40 thru 55 2-Cylinder Service Manual, P/N 520206, Page 204Get this manual
Installation 1All Models Except Jet: Apply OM: Gasket Sealing Compound to both sides of new impeller plate gasketPosition the gasket and impeller plate on the gearcasePlace the impeller O-ring onto the driveshaft and slide it into place on top of the impeller plate2Jet Models Only: Do not use the impeller plate gasket on Jet modelApply OMC Gasket Sealing Compound to the impeller plate before installing3Apply OMC Needle Bearing Assembly Grease to flat area of the driveshaftInstall the drive camThe sharp edge Q) of the cam is the leading edge during driveshaft rotation 4Slide the water pump assembly down the driveshaftAlign the impeller housing with the gearcaseRotate the driveshaft to engage the impeller cam with the impeller, and slide the water pump assembly down over the impellerBe sure the impeller cam does not fall out of position