1979 CB750 Tachometer gasket

Posted by smacdo3 on Jun 29, 2012; 11:29pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/1979-CB750-Tachometer-gasket-tp4023902.html

I am replacing the bolt and gasket for the tachometer. I think I got all of the old seal out because I can see metal now. But I tried to put the new gasket in and seat the tachometer and it all doesn't fit. I looked at a diagram and it looks like there is a thrust washer that was originally supposed to go in before the gasket. It was marked as obsolete on the parts list. Does is mean it would have to be removed for the new gasket to seat correctly?  If so how do you get it out?