My John Deere Push Mower Stalls out

Dirty Air Filter

• The air filter sits just outside of the engine, above the carburetor. It purifies the air of all dust and particulate matter before it reaches the carburetor and scours the bore. However, the John Deere push mower usually operates in dirty conditions, so this filter will get dirty fast. If the filter is too dirty to clean the air, it will stop entering the system and the mower will eventually stall. The air filter on a John Deere mower needs cleaning every 10 hours of operation.

Dirty Fuel Filter

• Inside the fuel tank, the fuel filter cleans all of the incoming fuel before it reaches the carburetor and damages the engine. Debris floating in the gas and impurities in the fuel can gradually build up against the mesh screen on the filter. Once the filter gets blocked, the fuel will also get blocked from entering the carburetor and the engine will stall. The fuel filter on a John Deere push mower will need replacing at the beginning of every season.

No Spark

• The spark plug sits inside the cylinder on the combustion chamber and ignites the fuel as it passes across. However, after the fuel is consumed, a small amount of those gases get left behind, gradually building up on the tip of the spark plug. Once the electrode tip on the spark plug becomes too dirty or blackened, the spark won't generate enough power to ignite the fuel and the engine will stall. Spark plugs on the John Deere push mower will also need replacing seasonally.

Other Problems

• The John Deere push mower also has many other points in the fuel, air and ignition system that can cause the mower to stall if they lose the proper balance. These other areas, such as the carburetor, the crankcase and the ignition wires, can be difficult to access and repair for the uninitiated. Other problem areas, such as a faulty ignition module, can also be dangerous, and even lethal, if the operator doesn't know what he's doing. Leave all of these difficult repairs to a seasoned professional.