This is a really good question to cap this guide off as it addresses something that you need to perform when you own any type of weed eater. You need to ensure that the air filter is cleaned to maintain the performance of the system. For the most part, most designs are universal and to begin, remove the cover that is holding the air filter. Typically, it will be held in place by several screws. Once the cover is open, remove the air filter from the system.
Really, all you need to do to clean it is to use a mix of soap and hot water. Again, you are not going to need to use a lot of soap as the filter is not going to be difficult to clean. Once you have done this, simply allow the air filter to air dry. After it is completely dry, place it back inside, re-apply the cover, and then you are ready to rock.