1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Manual, P/N 507266, Page 204Get this manual
Water Pump Servicing If the gearcase has been in service for any length of time, it is good policy to install water pump repair kitTo install the repair kit, proceed as follows:
Removal
1Remove the four screws to the gearcase
retaining the impeller housing
rn impeller the water pumpimpeller a-ringthe driveshaftplate2Slide assembly off Remove the drive cam, impeller
and impeller plate gasket Discard the gasketDisassembly Assembly
1Remove all parts from the housingInspect the housing for cracks or melting
rn 2Apply aof the of OMC Adhesive allow anyinadhesive to drop sealant the a-ring groove at each four ribs Do not
get into the air bleed groove in the impeller housingIf this groove is blocked by adhesive, the pump may lose its prime and not pump water
rn 3Place the a-ring in groove in the impeller housing[] 4Lightly coat the exterior of the impeller cup with OMC Gasket Sealing CompoundInstall the cup in the impeller housingThe liner locks in place in the housing with an index tab 0[] 5Lightly coat the liner with oilWith counterclockwise rotation, install the impeller into the liner with slot for impeller cam facing out