1998 Johnson Evinrude EC 5 thru 15 HP Four Stroke Service Manual, Page 252Get this manual
Water Pump Servicingthru 15 Disassembly
1Remove gearcase from exhaust housing as described in Gearcase Servicing, this section
2Remove the four impeller housing screws
3Remove the impeller housing and impeller by sliding them up and off the driveshaftThen remove the impeller drive pin and impeller plate 4Remove and discard the water tube grommet, O-ring, and seal in the impeller housing5Inspect the impeller, housing, and plate for excessive wear6Clean the impeller plate and gearcaseAssembly
rn new driveshaftGasket Sealingthe seal in the impeller housing 1Apply OMC Compound to the metal casing of seal Install