As a general rule of thumb, the air filter should be cleaned after every use. In more extreme situations, it may need to be checked and cleared every time you need to refuel. If you notice a hole has developed in the lining, replace it immediately to prevent any damage to the engine. • Filter Cleaning Instructions: • Dismantle the filter cover & remove the air filter • Wash foam filter in warm soapy water • Squeeze foam filter dry in a clean cloth • Apply foam filter oil • Squeeze foam filter in a clean cloth to remove excess oil • Reassemble the air filter and replace the cover