Cleaning your chainsaws air filter can lead to an improvement in performance and really should be done as part of your routine chainsaw maintenance schedule. It runs fine at all other times, cuts well and has good power. 20,427 satisfied customers. Check the fuel tank for the correct fuel and oil mixture, filling it up if necessary. More so, the chainsaw might bog and refuse to run when you give it gas. Los Angeles, CA 90013 What causes a chainsaw to bog down when accelerating? Make sure they are closed at a distance and neither touching the engine and not too far from it. (Even After Sharpening). var imagelinks=new Array() On mybackyardlife.com, I share tips on everything from grilling/smoking meat with my Big Green Egg to relaxing in the pool with my family. skytower, Oct 3, 2010. If you don't keep the blade oiler reservoir filled, you will have dulled blades, damaged bars, and generally poor performance. A loose spark plug wire or incorrect gap can also be responsible for a poorly running string trimmer that bogs down. It is experienced during welding, idling, or full throttle. Inspect the clutch center, drum, and spring for any excessive wear. If the spark arrestor is clogged, the chainsaw may run stall or run rough. //-->,