How to Replace Fuel Lines and Filter | Weedeater Featherlite The fuel lines on a Weedeater featherlite are notorious for degrading over time and eventually breaking. The fuel filter located on the small fuel line usually needs replacement by this stage. However this does not mean the end of your weedeater! The small and large fuel lines can be replaced and refitted simply with minor skill involved. Amazon: weedeater fuel filter Amazon: weedeater fuel filter. Venseri 530057781 Air Filter + Fuel Line Filter + Spark Plug for Poulan Craftman Weed Eater Featherlite SST25 FL20 FL26 FL20C FL23 MX550 P1500 P2500 P3500 P4500 XT260 XT700 SST25C String Gas Trimmer. 5.0 out of 5 stars 2. $9 $ 9. 49.