it converts a low voltage to a high voltage.
the magnet on the spinning flywheel of a lawnmower creates a spark every time ot passes by the coil. this spark is what ignites the fuel
It's a long piece of metal that's about 1/2 an inch thick and it's what pulls the pull cord back into the lawnmower after you pull it out.
If you do not have a key the coil is not going to spark.
You can use a standardbusiness card for the gap.
Depending on what lawnmower you have just simply take the spark plug out and tilt lawnmoer
Most mowers don't have a coil, they use magnetos for ignition. If it does have on it steps up voltage to a high level to jump the spark plug gap.
there could be water in the gas, your cab is not adjusted right, the coil is going bad
Obviously NOT unless your god
No. Burning gasoline, combustion, is a chemical change.
The thickness of a letter paper.
Tecumseh provides dealers with a 0.012" air gap guage, but 0.010 - 0.014" will do.