1. Gently tap the filter element to shake off some of the dust.
2. Use compressed air to blow from the inside out to remove dust.
3. If the filter paper is already dusty or wet with oil, water, etc., it should be replaced with a new filter paper in a timely manner.
4. For sponge foam wet filter element, clean water and nonflammable detergent can be used to clean the stains, but do not use gasoline or other detergents to avoid affecting the filtering effect of the filter element. After cleaning, a small amount of cleaning oil should be applied to the intake side of the filter element to maintain its normal working condition.