Low voltage cannot create a spark - KLE 500 kawasaki Motorcycles

By low voltage do you mean your battery, if not and your battery is good you will need to do a test on the coils, resistance and IB if it is neccasary, also check the pulse coil or crankshaft sensor, Igniter etc, It doesn't take long but there are several areas and also check all connectors and fuses corrosion loosness blown contact etc. If you have had any work done on the bike at the time trouble began start there. Here is a web site that has the wiring diagram for the bike. diagramwiring.net let me know if you need anything else K