Can I Hose Off My Lawn Mower?

Cleaning your mower after cutting the yard every time is a bit of a chore. But it doesn't have to be, there's an easier way, and it's been hiding in plain sight.


So can I hose off my lawn mower? Hosing off your mower is OK, but avoid spraying water on the engine and never use a pressure washer to clean your mower.


Cleaning after every use is important, decaying grass will eat all your metal components.



A thorough clean down at the end of the season is critical to your mowers health. If you're winterizing your mower, check out "Mower winterizing" in the repair video library, it walks you through the winterizing process step by step - from cleaning to engine and fuel system protection.


My Favorite Way To Hose Down The Mower

Of course you can use soapy water and your garden hose to wash down your mower deck. Although your mower is weather proof, it's not water proof, so avoid the engine altogether.


Getting water on the electrics can cause them to fail, which is expensive and warranty likely won't cover it. Avoid the cables, transmission and belts, water causes the cables to rust and eventually bind and break. 


Anyway, I want to share this info with you, because I don't want you guys scraping and scrubbing on your knees when there's a better way. This discrete fitting escaped my notice for years, and I felt more than a little silly when I discovered what it was for.


Now I use it after every mow because it only takes 2 minutes. Take a look at your mower deck, if it's relatively new, it'll likely have a mower deck wash out port fitted. 


Mower wash out port Mower wash out port with hose connected

Deck Wash Out Hose Port

Bet you never noticed it right! Anyway, if you've got a garden hose, simply move the mower to a paved flat surface and follow these procedures:


  • Remove Grass Bag
  • Lower Deck Height 
  • Connect Hose To Deck
  • Turn Water On
  • Start Your Mower 
  • Run Blade Until Water Runs Clear
  • Remove Hose Water Off
  • Start Mower Run Blade To Dry Deck
Mower wash out port

Hose On

This is so cool! I got so excited when I did this the first time, scraping the underside of a mower just isn't fun.


Be warned, it does leave a green mess on the drive but if you hose it off before it dries, it's not a problem.


Why You Should Never Power Wash Your Mower

Power washing is a fantastic tool, and it's great for washing the car, decking, driveway but not the mower. The problem is, the pressure is so great, it forces water into bearings, cables, under seals and water turns to rust which in time will cause failure and dollars. 


The high pressure water also washes away vital assembly grease, on axles and that causes the dry components to wear out prematurely.


Removing the grass from the deck after each mow is important. Decaying grass produces acid which will happily eat your mower in a few short years. The top of the mower deck can be washed but a brush or leaf blower will do a fine job too.


Mower deck rust

If Only! 

Related Questions

Is it OK to tip a lawn mower on its side? Yes, you can tip your mower on its side provided the carburetor is pointed upwards.


Will my lawn mower be OK in the rain? Yes, your mower will be OK in light rain, it is weather proof, but it needs to be stored under cover long-term.



Auto Technician and Writer at | Website

John Cunningham is an Automotive Technician and writer on I've been a mechanic for over twenty years, I use my knowledge and experience to write "How to" articles that help fellow gear-heads with all aspects of mechanical repairs, from lawn mowers to classic cars.