I just did a carb job on an 1988 90HP Johnson and the kit has a lot of small o-rings and rubber washers and stuff that I cant figure out what they are for. I replaced the 0-rings on the drain plugs and new washer on new float seat, but that's about all I saw. Even the diagram doesnt show many of these parts.
http://shop2.evinrude.com/ext/index.aspx?s1=c12691285df2af868f5753a76d56de2e
http://shop2.evinrude.com/ext/index.aspx?s1=c12691285df2af868f5753a76d56de2e