Briggs & Stratton Engine Lawn Mower: How To Change The Oil

The Briggs & Stratton engine lawn mower is a popular choice among homeowners. It has many benefits, including durability and low maintenance. The key to maintaining this machine is knowing how to change the oil. This article will discuss how you can check and change the oil on your Briggs & Stratton engine lawnmower!

When To Change The Oil In on a Briggs & Stratton engine lawn mower

You will need to change the oil in your lawn mower engine every 25-30 hours of use. This is much more often than other engines, and it needs to be done because this type of engine uses a lot less oil than others. It’s important that you check your manual for information on your specific machine, as some Briggs and Stratton engine models will need to be changed more often.

When you are checking the oil on a Briggs & Stratton lawn mower, look for the following signs:

Heavy sediment in the bottom of the container

This is one sign that it’s time to change out your old oil. The sediment is coming from small pieces of metal that have been worn off by the engine, which are then deposited in your oil.

Oil that looks black or has a burnt smell

If you see this kind of thing happening to your motor oil, it’s time for a new one! This means there may be some internal damage occurring in your engine.

How To Change The Oil In a Briggs & Stratton Engine Lawn Mower

Step one – Park or turn off your mower and allow it to cool down for at least an hour before beginning work on it. You don’t want to start messing with the engine while it’s still hot, because you could end up hurting yourself.

Step two – Locate the oil cap on your lawn mower engine. This is usually a black or green cap that says “oil” on it in big letters. You’ll need to remove this cap in order to check and/or change the oil.

Step three – Place a container below the oil cap in order to catch any oil that may come out when you remove it. This is especially important if your lawn mower is on a slope, as the oil could easily spill over and create a mess.

Step four – Use your hand or a wrench to unscrew the oil cap. Be careful not to spill any of the oil that’s inside!

Step five – Once the cap is off, take a look at the color and consistency of the motor oil. It should be light brown or golden in color, and it shouldn’t have any bubbles in it. If you see anything wrong with the oil, such as sediment or bubbles, it’s time to change it out.

Step six – If the oil is fine, use a funnel to pour new oil into the engine. Be sure to follow the instructions in your manual for how much oil you need. You’ll also want to make note of the type of oil you’re using so that you can buy more of it in the future.

Step seven – Once you’ve replaced all of the oil, screw your cap back on tightly and use a rag to wipe off any excess that spilled over or got onto the engine. Now you’re ready to start up and check out how well your new motor oil worked!

How To Remove Old Oil From a Briggs & Stratton engine

Steps you take to drain the oil include:

1. Run the mower’s engine for 15 minutes to warm up the oil. This is essential to removing all dirty debris from the engine.

2. Turn off the engine and disconnect the spark plug wire.

3. Drain the gasoline from the mower or place a plastic sandwich bag over the gas tank and secure it by screwing the cap on to the bag. This is necessary to prevent leaking

4. Insert the oil extractor tube and pump the oil out of the engine.

5. Place the old oil into a container.


Now it’s time to pour the new oil into the engine. You should have checked the operator’s manual to learn the proper oil to use in the engine and you should have that oil at hand. Briggs & Stratton suggests that you use SAE 30 oil. This oil can be used in most small engines.


Pour the oil into the crankcase and then insert the dipstick into the tube. Pull the dipstick out to check that the proper amount of oil is in the tube. Once you’ve confirmed that the oil is at the proper level, put in the dipstick and screw down the dipstick cap.

If you had removed the fuel, pour fresh fuel into the tank and then reconnect the spark plug wire.


Always read the engine and equipment manuals before starting, operating, and servicing the engine or any other equipment of your lawn mower. It helps prevent injuries and property damage.


If you’re unsure about changing the oil or performing any other maintenance to your mower, take the mower to an authorized dealer for service.

Additional Tips For Maintaining Your Briggs & Stratton Engine Lawn Mower

  • Be sure to keep an eye on the oil level in your engine, and add more if necessary. You don’t want to run out of oil while you’re mowing!
  • If you live in a very dusty area, it’s a good idea to clean off the air filter every few weeks. This will help your engine run more efficiently.
  • Make sure you keep the blades of your lawn mower sharpened. A dull blade can cause excessive wear on the engine.
  • If you’re following all of these tips and still experiencing problems with your Briggs & Stratton engine lawn mower, it may be time to take it into a shop for repairs. If you don’t feel comfortable with that, it’s best to contact a professional mower repair service or your local Briggs and Stratton dealer.

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