A washout port simplifies cleaning a mower deck. You can make your lawn mower or tractor work more effectively and extend the life of its deck by cleaning off grass clippings, dirt, and debris from the underside of the deck, preferably after each use and especially if your yard is damp when you mow.

Should you wash your mower deck?

Yes, the Lawn Mower Deck Should Be Cleaned

Cleaning will actually help lawn mower performance by allowing the blades of grass to stand fully upright as the blade spins to trim them. ... Keeping the bottom deck clean also helps minimize the spread of lawn diseases.

What is mower deck wash?

A riding mower with a deck washing system allows you to clean the deck's underside easily without bending or kneeling next to it and trying to direct water to the entire underside with limited vision of that area.