i have a 1996 crm md24 can not start.

I could start it 1 month ago.

i checked the spark plug was not spark. Then changed a new one. Then i checked the kill switch.

I cleaned, but still no spark. So what should i check next.

Side stand switch ? HT LEAD and cap. Is there any output from the magneto? Check the 3 phase [ 3 yellow wires].
Is the ignition light glowing when kicked over?
Mike