1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, Page 258Get this manual
Disassembly
1Remove the propeller or test wheel from the gearcaseInspect the condition of the propeller hub1s1 2Drain the gearcase by removing first the oil level plugthen the oil filldrain plug CD3Remove the copper water tube from either the water pump or the exhaust housingrJl 4Remove the four impeller housing screws with washersSlide the impeller housing and impeller up and off the driveshaftRemove the impeller drive pin Q) 1sl 5Pry under the impeller plate to loosen itSlide the plate up and off the driveshaftScrape all gasket material from the plate, gearcase, and impeller housing 6Slide the driveshaft out of the gearcase7Remove the shift lever pivot pin and discard the O-ringf101 8Remove the six screws attaching the lower gearcase to the upper gearcaser:t1l 9Using soft face mallet, tap the skeg on its sideRemove the lower gearcaseDiscard the rubber seal between the two gearcase halves