1998 Johnson Evinrude "EC" 2 thru 8 Service Manual, P/N 520202, Page 212Get this manual
COA3361
Disassembly
1Remove four water pump screws[] 2Slide water pump housing up and off driveshaftRemove impeller drive keytwo gasketsand water pump plate]3Remove three gearcase cover screws and remove the coverDiscard the gearcase cover gasket4Slide the shift rod and driveshaft straight up and out of the gearcaseCOA3364
5Remove the two gearcase head screws
6Tap lightly on the ears of the gearcase head using wooden dowel and mallet until the gearcase head has rotated 10 or 15 in either direction[] 7Drive the gearcase head rearward by tapping alternately with soft mallet on each of the ears until the O-ring is disengagedSlide gearcase head and propeller shaft out of the gearcaseCOA3365