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.
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
If you do not have a key the coil is not going to spark.
You can use a standardbusiness card for the gap.
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
The thickness of a letter paper.
Tecumseh provides dealers with a 0.012" air gap guage, but 0.010 - 0.014" will do.
An ignition coil requires external electrical power. A magneto requires only mechanical power to create an ignition spark. If an engine HAS no electrical power (lawnmower, tiller, chain saw) then a coil would not function.
On Briggs and stratton or techumseh.com Just go to ask.com and type in the brand of product and it should come up.
It is the same as an ignition coil on all internal combustion engines. It is a high voltage transformer that provides a spark at just the right time to ignite the air-fuel mixture in the combustion chamber.
Lawnmower Deth was created in 1987.