Why Is My Riding Mower Sputtering

Your mower pulls in air from outside and mixes it with gasoline for the proper explosion inside the engine. A dirty air filter inhibits the flow of air into the carburetor. Clean or replace the air filter to stop the mower from sputtering to a halt. … Replace the cap to solve sputtering and dying.

How do I fix my lawn mower from sputtering?

1. Remove the cap of the gas tank and look in at the gas. Inspect the gas for signs of water. …
2. Turn the mower over so the oil case is sitting under the carburetor. Set a drain pan under the oil plug. …
3. Check the underside of the unit for caked on grass. Excessive grass under the deck will make the mower sputter.

Why is my lawn mower not running smoothly?

Causes: If the engine starts, but does not run smoothly, it means that the spark plug and ignition system are in order and you need to look elsewhere for the source of the problem. The usual culprit is air intake or fuel system related.