On Fri, 30 Apr 2010 22:13:24 -0400, "Stormin Mormon"
wrote:

Easy off oven cleaner is excellent for cleaning carbs.
Strips off gum and varnish. Rinse well, and dry before
reassembling. Best carb cleaner I've ever used.
Just don't forget to rinse promptly. - and thoroughly. On a zinc
carb it's not as bad as on aluminum.