1999 "EE" Evinrude 5 thru 15 4-Stroke Service Manual, P/N 787022, Page 263Get this manual
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 gearcase[] 5Remove the two gearcase head screws6Tap 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 gearcase[] 8Slide the gearcase headreverse gearand reverse gear thrust washer off the aft end of the propeller shaftThen remove the plunger COA3364