Genuine Toro Fuel Filter . A clean fuel filter strains the fuel before it reaches the carburetor and prevents foreign particles from clogging your engine. A dirty fuel filter can cause the engine to run too lean with diminished performance and uneven operation. Toro would like to remind you that fitment can vary by sub model, serial number, and/or production date of your equipment. Please refer to the original owners manual in order to verify this is correct part for your machine.