Walbro carburetors are a high quality replacement option for your chainsaw. Carburetors can gum up and gaskets tend to deteriorate over time, especially when running fuel with an ethanol content. Sometimes a new carburetor rebuild kit may not repair all the damage, so only a new carburetor will do. Walbro uses a numbering system (Example WJ-76) to identify the carburetor. Walbro now adds a (-1) to this part number (Example WJ-76 is now WJ-76-1), but both part numbers represent the same carburetor. Many chainsaw models have several carburetor options, and many times they are from different manufacturers, so be sure to check before ordering.