What does it take to spark a lawnmower?

Then, you might also wonder, "How does the ignition work on lawn mowers?"

This ignition device starts a mower and maintains it running by creating enough electric current to jump between the electrodes of an spark plug and create a spark that ignites fuel in the combustion chamber.

Secondly, how do I fix no spark? There is an ignition problem if you don't see sparks. Take out the plug wire and insert a spark or a ignite tester into the wire's end (the plug boot). The spark plug should be placed on the engine's metal surface. Or, you can ground the ignition plug tester to it. Turn the engine on to test for spark.

The same goes for my lawnmower. Why is it not sparking?

Before you begin to remove your engine covers, you will need to pull the spark plug from the spark plug wire. Install the spark plug again and check if your engine is starting with the regapped plug. Your magneto might be bad if you don't get any spark.

What happens if the spark plug is not right?

If the electrodes are broken or flattened, it is usually a sign that the spark plugs were not installed correctly. An excessively long spark plug can cause severe damage to your lawnmower's engine. A plug that is too small can lead to poor performance and fuel economy.