it converts a low voltage to a high voltage.
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.
A magnet in a lawnmower may be used as part of the magneto ignition system to generate electricity for the spark plug. This helps ignite the fuel mixture in the engine, allowing the lawn mower to start and run efficiently.
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.