1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 292Get this manual
Servicing the 7.5 in(19 cm) Gearcase Extension10, 14, 25 Comm r:jl
1Using flat blade screwdriver, pry up on the upper driveshaft sealRemove and discard the seal2Using OMC Driveshaft Bushing Remover Installer PI N
t=J 330334, remove the bushing and lower driveshaft seal from
the extensionWith malletdrive the bushing and the seal out of the extensionDiscard both parts
3Insert the pin of the tool through the drive portion of the toolApply OMC Triple -Guard grease to new bushing and place the bushing on the toolFrom the gearcase end of he extension, drive the bushing into position until the pin contacts the extension