Skip to main content

How to change the oil in your lawn mower in 6 simple steps

Lawn mowers are important to lawn maintenance and health, so it’s vital to take care of them. They need gas or electricity, to be kept clean, for their blades to be sharpened, and, of course, an oil change every so often.

How often, though, is every so often? How much oil do you need? What do you do with the old oil? If these questions are stressing you out, you aren’t alone. We’re here to walk you through every step of changing your lawn mower’s oil in this simple guide.

Person removing oil dipstick from lawn mower and wiping it with old, white wash rag
Digital Reflections / Shutterstock

When should you change your lawn mower’s oil?

In general, your oil needs changing after every season of use, every 50 hours of use, or after a period of use with rough conditions. Since most mowing occurs during spring and summer, this means you’ll most likely want to change your oil every fall. However, it’s a good idea to keep an eye on your oil and check it regularly. If the oil begins running low, has particles in it, or it becomes sludge-like, you should change it, even if it doesn’t line up with the regular schedule.

Recommended Videos

You should also check your owner’s manual for the lawn mower. An owner’s manual will have instructions, including any special instructions for your specific model of lawn mower. If you got your lawn mower secondhand or have misplaced your owner’s manual, you can check the manufacturer’s website. This is important, as not every engine is exactly the same, and it’s crucial to know what your mower in particular needs to avoid any safety concerns or damage to your mower.

Oil slowly pouring into the engine of a lawn mower
Tony740607/Shutterstock

How to change your lawn mower’s oil

This entire process is far less daunting than it seems, we promise. Here’s our simple, step-by-step guide

  • Start your oil change with warm oil, which helps the entire process go smoothly. You can do this by either changing your oil directly after you’ve mowed your lawn or running the lawn mower for 10 to 15 minutes before beginning.
  • Disconnect the spark plug wire from the spark plug and keep them separated. This is where your owner’s manual comes in handy, as different models may have different precautions in place regarding the spark plug.
  • Open the oil tank and remove the dipstick. Wipe the oil off the dipstick with a rag and set it to the side. Be careful not to lose it.
  • Grab an oil pan or a similar, oil-safe container to drain the oil into. A container that isn’t oil-safe could leak, which can create a mess or lead to oil spilling into your yard.
  • Remove and dispose of the oil. There are two ways to do this: the tilt method and siphon method
    • The tilt method doesn’t require any extra tools, but it can be a bit messier. Depending on your model of lawn mower, you may need to seal or empty the gas tank first to prevent a gas spill. Simply put your oil pan next to your mower and tilt it over, pouring the oil into the pan. Take any precautions against spilling that you can, such as wearing old clothes or putting a drop cloth down.
    • The siphon method does require a siphon, oil removal kit, or pump of some sort, but it is more precise and less likely to create a mess. Be sure that the end of the pump or siphon fits into the oil tank, but other than that, any cheap hand pump will work just fine. Pump the oil out of the tank and into the pan.
    • Take the old oil to almost any location that sells motor oil, and they can recycle it for you. This includes many smaller mechanics and auto parts stores as well as larger retailers and some service stations. Never dump oil into your yard or down your sink. It can cause major problems for both your plumping and your plants.
  • Once the oil has been drained, you’re ready to replace it with fresh oil. A funnel is extremely helpful for this, but it can be done without one if you pour very slowly and carefully. Just be prepared for potential spills.
    • When it comes to the type and amount of oil you’ll need, refer to the owner’s manual or manufacturer’s website. If you aren’t certain, or can’t find the information, you can rely on the experience of your local mechanic or auto parts store for a recommendation.
    • Add your oil slowly, and check the oil level as you go to be sure you aren’t under or over filling the tank. Once you’ve replaced the oil, put the dipstick back in and secure the lid.

Now you’re ready to clean up any spills, reattach the spark plug, and store your mower until it’s time to mow your lawn again. That’s all there is to it! Remember to keep your owner’s manual handy and don’t hesitate to ask your local experts for help if you need it. Once you get in there and start working, you’ll find that it’s nothing you can’t handle — even an oil change.

Cayla Leonard
Cayla Leonard is a writer from North Carolina who is passionate about plants.  She enjoys reading and writing fiction and…
How to prepare your garden for spring: Tips for a successful season
Make sure your garden is ready for spring with this checklist
Spring flowering bulbs

The seasons are changing once again, meaning it’s time to start getting your garden ready for spring. If you’ve planned your next garden and know what you want to plant, but aren’t sure when or how to prepare the garden for spring, then you’re in luck. We’ll walk you through everything you need to do to make sure your garden is in peak condition for the new season. From when to start to how to get your soil and plants ready, this guide will tell you everything you need to know.
Gathering your supplies

Before you can begin to prepare the garden for spring, make sure you have everything you’ll need. If you’re planning on ordering seeds or plants online, go ahead and place your order so you won’t have to wait for them to arrive after the garden has been prepared. This is also a great time to order supplies that you already know you’ll need for projects you want to tackle, or things you know you’re out of such as fresh potting soil or fertilizer.

Read more
Learn how to grow saffron at home with these simple tips
Add saffron to your garden with helpful tips from this guide
Saffron crocus flowers

Herbs and spices are a key part of many kitchen gardens, and there are lots of fantastic and unusual plants you can add to your herb garden to flavor your meals. Growing your own plants isn’t just a great way to get fresh herbs -- it can also save you money.

One of the most expensive spices is saffron, but it’s also one of the most delicious. Growing your own saffron plants sounds like a great way to get this flavorful spice without breaking the bank, but how hard is it to do? We’ll explain everything in this simple guide on how to grow saffron at home.
What is saffron?

Read more
How to grow lobelia: A simple guide for bright blue-purple blooms
Adding gorgeous lobelia to your garden
Lobelia erinus blooming in a container

Flowers fill a lot of roles in a garden and in a home. They’re great for pollinators, they can lift your mood, and some of them are even edible. If you’re a fan of beautiful blue or purple flowers, you may have heard of lobelia. This flower looks as lovely as its name sounds, and it’s native. Available in shades of blue, purple, and even red, lobelia makes a great addition to gardens. If you want to add this wonderful flower to your home or garden, here’s everything you need to know about planting and caring for lobelia flowers.
Planting lobelia

You can plant lobelia in an outdoor garden as soon as the last frost of winter has passed. If you want an earlier start and a longer bloom time, you can start your lobelia flowers as seeds indoors and transplant them in your garden once the weather warms up.

Read more