Step 1: Check the Air Filter. Even if your mower has a brand-new spark plug, it won’t run smoothly if air can’t get into the carburetor and combustion chamber.

Here's how to safely remove the spark plug from your lawn mower. advertisement. The Family Handyman. How To Remove a Spark Plug From a Lawn Mower. Story by Robert Maxwell • 5mo.

Available for popular lawn mower brands, each kit features up to 10 items such as an air filter, pre-filter, oil filter, fuel filter, hose clamps, spark plugs and motor oil. Rotary Corp.