Detailed diagrams of carburetors are available on several different websites, including Jalopnik.com, OldCarManualProject.com and SearsPartsDirect.com. The diagrams vary in format and style depending on the site and which carburetor is being examined.
Jalopnik.com provides a simple diagram for a basic carburetor and includes information and a YouTube video about how a carburetor works. OldCarManualProject.com specializes in carburetors from the Holley Carburetor Division and provides specific diagrams for numerous models spanning the more than 100 years of Holley carburetor production. The Holley diagrams include images with numbered parts as well as numerical listing guides. SearsPartsDirect.com provides detailed diagrams for carburetors in lawn and garden equipment.