Does anybody know

[deacon]

There used to be a chart on my mechanics wall of pictures of sparkplugs with different pictures and the causes for each condition. Do you happen to know where one is to be found on the net.

It would be easier to explain the condition of the plug if I could match it to something. Thanks

[Norman]

Champion spark plugs should have what you are looking for have to google it.
Black and oily very rich.
White and looks new lean
brown or chocolate brown your doing it right.
Run it wide open after warmed up do this while riding it and while wide open kill the engine pull the plug and look at it.
Norman