1998 Johnson Evinrude EC 5 thru 15 HP Four Stroke Service Manual, Page 139Get this manual
[]]8Use OMC Valve Spring Compressor, PI 341446, to facilitate removal of valves and componentsPosition compressor end on valve face and compressor ring on valve capCompress spring and remove cap, keepers, and spring Do not compress spring completelyKeep components together and in order for reassembly
9Mark valves for location and remove
[!1] INotel
10Remove valve seals carefully, using pliers, to avoid damaging guideReplace valve seal and spring assembly whenever removed11 If necessary to replace, remove valve spring seat from head