How to Keep Mower Decks From Rusting


Proper lawn mower maintenance will extend the life of your machine. One of the key maintenance procedures is to keep the underside of the mower deck clean to prevent rust damage. As you mow your grass, debris, grass clippings and dirt build up on the underside of the mower deck. If left in place, these can eat into your paint and eventually cause the deck to start rusting.

Step 1

Turn off the lawn mower and take it to a well-lit area. Disconnect the spark plug wire by grasping the connector and pulling it off the spark plug.

Step 2

Turn the lawn mower on its side. Grab and remove any large chunks of grass and debris.

Step 3

Scrape off the remaining grass and debris with a putty knife.

Step 4

Wash the underside of the mower deck with a soap-and-water mixture to remove any remaining debris.

Step 5

Turn the mower back over and use soap and water to wash the top of the mower deck.

Step 6

Reconnect the spark plug wire. Your lawn mower is now ready to mow again.

Tips and Warnings

  • Wear gloves when working under the mower deck. The lawn mower blade is very sharp and can cause serious cuts to bare skin.

Things You'll Need

  • Putty knife
  • Bucket
  • Soap and water
  • Rags
  • Gloves


  • The Lawn Mower: Lawn Mower Care
  • Acme How To: How To Take Care of a Lawn Mower
Keywords: mower deck rusting, prevent rusting, clean mower deck, putty knife, soap and water, spark plug

About this Author

Robin Gonyo has been writing for several years now. She has a deep love for gardening and has spent a vast amount of time researching that subject. Previously she has written for private clients before joining Demand Studios. She hopes to share her knowledge with others through her writing.