We've got the steps to go from zero to hero with a carburetor covered in oxidization:

Ask the Editors: Carb Corrosion Solutions - ATVConnection.com

 

Heard some good things about using CLR but never tried it myself. The Chem Dip you get now is fair,but nothing like the old stuff back about 15 years ago since the EPA made them weaken it. You could drop a carb in the old stuff and 5 minutes later it was spotless. You just had to be careful not to get it on your skin,too caustic.

 

Never thought about using CLR. Have used it around the house. Also tried Lime Away because it was cheaper. Spend the few extra pennies and get the CLR.