This is what I like about this web site. Information is freely given and that spreads the wealth of knowledge about early Goldwings. I had forgotten how to read the plugs, yes it has been that long and I am that old.......Read the plugs and go from there. There should be a light tan color on the porcelin, if too rich it will be black, too lean it will be white. Adjustment of the idle mixture screws may be all that is needed.