How to Test a Small Engine for Spark
If your small engine isn't starting, you'll need to diagnose many issues including the spark plug. This video walks you through the steps of how to test for a spark using a spark tester.
This was easy. First I removed the top cover. I used a torx screwdriver and unscrewed the recoil starter cover along with the dust shield. I removed the two mounting screws from the ignition module, disconnected the two ignition wires and removed the module. To install, I loosely fitted the new module with two screws and put a matchbook cover between the flywheel and the module contacts as the module has magnetic contacts and then made sure the mounting screws were tight. (Note: the matchbook cover acts as a non-magnetic feeler gauge to set the gap for the module). I then removed the matchbook and reconnected the two ignition wires, installed the dust shield and attached the recoil starter cover with the mounting screws. Lastly, I installed the top cover. Afterwards, the chainsaw started and ran fine.