1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 191Get this manual
Disassembly
INote To simplify reassembly and wiring installation,their proper layout the various screws and clamps in the order of
location
housing
1To remove the water tube grommet, depress tab of the grommetPush the grommet out of the inner exhaust
2Use OMC Grommet Installer PI 304148 to install new grommetApply OMC Gasket Sealing Compound to outside diameter of the grommetAlign tab of the grommet with hole in he housing and install grommet3 Using diagonal or end cutters, gently pry out and remove the flywheel key