1992 Johnson Evinrude "EN" 9.9 thru 30 Service Manual, P/N 508142, Page 181Get this manual
119 6Remove all the screws from the cylinder head water cover, tap is around the edge with soft mallet to break the seal, and then remove itRemove the thermostatsealand spring Then, remove the cylinder head1201 7With number punches, mark the top piston dome "No.1" and the bottom piston dome "No.2" 1211 8Remove the inner and outer exhaust covers; carefully separate the pieces and clean the gasket surfacesCheck the inner exhaust cover for pitting and flatnessIf pitting exists or the cover is warped, discard it and replace with new cover during reassembly122 9Remove the intake bypass cover and clean the gasket surfaces1231 10Remove the five nuts, two hex head screws and one flat head screw, and remove the intake manifold241 11Remove one Phillips head screw and remove the leaf plate if Qj