
This DIY chainsaw repair guide explains how to replace a chainsaw carburetor. The carburetor mixes air and gas, which ignites in the cylinder to power the engine. If the engine won’t start when the tank is full of fresh fuel, test the carburetor by removing the air filter and pouring about a teaspoon of fuel into the carburetor. Pull the starter rope. If the engine starts and then quickly dies, the carburetor is likely the problem. Replace the carburetor using the manufacturer-approved chainsaw part.
Use these steps to replace the carburetor in Craftsman, Poulan, McCulloch, Snapper, Husqvarna, Troybilt and MTD chainsaws.
If you prefer rebuilding the carburetor, How to Rebuild a Chainsaw Carburetor shows how.