How to Change Oil in Your Lawn Mower

Step 1 Run Engine

Begin by running the engine until it’s warm to help drain more oil. Then, turn off the mower.

Step 2 Disconnect Spark Plug

Before you begin any gas mower maintenance, always disconnect the spark plug and secure it off to the side so it won’t start accidentally.

Step 3 Remove Cap

Clean around the oil cap so debris won’t get into the crankcase before you remove the cap.

Step 4 Drain Oil

Tilt the mower on its side and drain the oil into a pan. Tilt the mower with the oil side down and the air filter up. If your mower has a drain plug on the mower deck, you can drain the oil out the bottom. Then, replace the drain plug.

Step 5 Refill Oil

Re-fill the engine with the type of oil the manufacturer recommends. Stop when it reaches the FULL mark on the dipstick. Don’t overfill it.

Step 6 Replace Cap

Replace the oil cap to finish the job!