How do you test mower ignition coil?

To test a mower ignition coil, first, ensure the mower is off and disconnected from the power source. Use a multimeter to check the resistance across the primary and secondary terminals of the coil; typically, primary resistance should be between 0.5 to 2 ohms, while secondary resistance should range from 5,000 to 15,000 ohms. If the readings fall outside these ranges, the coil may be faulty. Additionally, you can perform a spark test by removing the spark plug, grounding it, and pulling the starter to see if a spark is produced.