Originally Posted by email@example.com
I have never checked for spark before. How exactly do I do that?
Pull the plug from the head, reconnect the plug wire, hold the plug on top of the cylinder head and either push the bike forward at a good pace, clutch engaged, or suspend the rear wheel and pedal it fast. Look for a spark at the plug electrodes; the little 'L' shaped part on the end of the plug and the center where the 'L' bends over. You should see a blue spark jumping between them with every revolution of the engine.
If no spark, disconnect the kill switch from the ignition circuit and try again. If still no spark and you're using the kit supplied plug, replace it. Check the connections at the CDI and the plug boot. Get back to us with what you find.