1. Check the pressure drop across the air cleaner assembly. If the restriction is 1.2 kPa (20 inches of H2O) or greater the element should be replaced.
2. Examine the air cleaner cover. If bent, crushed or damaged replace with a new part.
3. Examine the filter body for cracks, damaged threads or defaced gasket surface. Replace, if necessary.
4. If the filter element is damaged it must be replaced.
NOTE: If filter element is removed from air cleaner assembly, the element should be discarded and replaced with a new part.