How to Change a Lawn Mower Air Filter

Foam lawn mower air filter.

How to Clean a Foam Air Filter

If your mower has a foam filter, you don’t have to replace it unless it’s torn or won’t come clean. Follow the above instructions to remove the filter from the mower, then:

  • Wash Foam Air Filter: Wash the foam air filter thoroughly using mild dish soap and water. Avoid using detergents – they’ll leave slippery residues that are nearly impossible to rinse out.
  • Dry Foam Air Filter: Squeeze any excess water out of the foam air filter, then dry it further by blotting the foam air filter with a clean rag or paper towels, until no more water comes out.
  • Oil Foam Air Filter: Before completing this step, check the owner’s manual for your lawn mower, since some newer models have non-oiled filters. To oil the filter, apply a spoonful of engine oil to the foam, and work the foam between your fingers to distribute the oil. Blot the foam air filter with a paper towel or rag to remove any excess oil – it just needs to be very lightly coated, not soaked. To keep your hands clean, you can drop the filter and a little oil down inside a plastic zip-top bag and work it in through the plastic.
  • Reattach Foam Air Filter: Put the foam air filter back in the compartment in the mower, and screw the cover back on.

Further Information


Please Leave a Comment

5 Comments on “How to Change a Lawn Mower Air Filter”

You can follow comments to this article by subscribing to the RSS news feed with your favorite feed reader.

  • Gregg Says:
    June 28th, 2014 at 4:11 pm

    I too have been everywhere looking for this filter. Anyone???

  • Marcello Says:
    May 29th, 2014 at 9:31 pm

    Can you tell me the part number of that blue filter you pulled out of that yardman mower?

  • Marcello Says:
    May 29th, 2014 at 9:25 pm

    The yardman is the same mower I have. Thats the filter I need where can I get one? Checked Lowes. Home Depot. And canadian tire. Also repair doesn’t recognize my model number. Cause its Canadian. Can you help me out? Thanks.

  • Karen Says:
    September 18th, 2013 at 2:07 am

    The mower in the picture looks just like mine… I am trying to find a filter for it with no luck. Mine is a 2005 and the filter is about 2 1/2 by 3 1/2 and maybe 1 1/2 tall. I can not find the serial number, I think we changed the top with the pully because the string kept breaking. If this is the same mower what part numner do I need ?

    Thank you,

  • mwkelly Says:
    June 20th, 2013 at 6:04 pm

    wow was that easy thank you

We want to hear from you! In addition to posting comments on articles and videos, you can also send your comments and questions to us on our contact page or at (800) 946-4420. While we can't answer them all, we may use your question on our Today's Homeowner radio or TV show, or online at

 characters available

How to Change a Lawn Mower Air Filter