The GumBuster kit from this listing consists of purge valve and pressurized purge can that is compatible with all handheld gas powered equipment like string trimmers, chain saws, leaf blowers and all other engines with diaphragm type carburetors. The PurgeValve gets connected to the carburetor’s fuel feed line. While actuating the primer bulb, the GumBuster solution gets injected inside the carburetor. In matter of minutes the solution dissolves the gum. Before the kit gets disconnected, blast the carburetor with one more shot of GumBuster. Once disconnected from the carb and with the tank fuel feed line reconnected, the engine starts instantly. For videos on how to install the purge valve and how to use the GumBuster spray, check our YouTube channel with the title:

“String Trimmer Weed Eater Won't Start Runs Rough Bogs Down Carburetor”

https://www.youtube.com/watch?v=ncZ3Xz4hjfM&t=27s