Model## 320bv
To be sure it is the kill switch is easy enough to figure out. But first lets go over how it works picture a ground wire being touched to your spark plug wire the spark would follow it to ground before it got to your spark plug. That is what happens when you hit the kill switch it completes a circuit that sends your spark to ground rather than to your plug. So if we know for sure we are not getting spark to the plug then we only have to disconnect the kill switch to determine if it is the culprit. Pop out the kill switch on most models it just takes a screw driver. when you do look to see if the spades are touching if they are separate them and see if you have fire at the plug sometimes this is what causes the failure. If not proceed with plan A remove the switch and tape off one or both of the spades that connect to it as if they touch it is the same thing as an engaged kill switch and your spark will go to ground. Try the engine again. Are you getting spark to the plug if so then replace the kill switch. if not then follow your wires back to your coil at the flywheel are there any bare spots or is the spade at the coil touching anything. If so repair the wiring or adjust the spade and try again. if still a no go then you have a bad coil
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