The spark arrestor also works to prevent bugs from getting into the engine. It seems fine. If you cut in a different climate that is not fire-friendly such as wet or damp woods or hardwoods, you can consider removing it. I also added another exhaust outlet to the opposite side of the muffler and modified the plastic cylinder cover slightly to clear the new muffler opening. Step 2: Remove The Spark Arrestor. Then I pulled the spark arrestor, and it was completely clogged. Drained and replaced gas. Work as a filter to keep stinkbugs and mud dobbers out of the engine. The more air it takes, the more fuel it can burn. If your saw muffler has a very fine mesh screen, use a less restrictive mesh screen. . Dont take a chance of catching the woods ablaze. If you feel lack power, buy another chainsaw with desired power. :usflag: You should totally remove the spark arrestor. If you don't need it where your at then take it out. Thread starter Beer Gut; Start date Nov 20, 2011; Help Support Arborist Forum: Beer Gut A Fine Pilsner. It is designed to capture sparks and hot embers which can escape from the chimney and ignite a fire in the combustible wall surface around the chimney. We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense . Remove the screen and inspect it for dirt and . //-->,