Have Boat Questions? Ask a Boat Repair Expert.
Hello my name is ***** ***** I will assist you. So your issue is surely not related to the kill switch or stop switch circuit. Most probably it is either a defective stator or CDI unit. What you need to do is to have some readings using a multi meter, ideally when there is no spark. In the following link you can find the ignition troubleshooting for your engine so that you can check the resistances of the ignition components. from there you can pinpoint the problem.
If you require further assistance let me know.