Start with the basics, 1st disconect the kill switch. 2nd make sure all connections are clean and tight. 3rd check your grounds. 4th inspect your wireing harness for breaks or shorts. 5th check the magnets inside the flywheel, make sure they are strong. 5th check the stator plate timing, it has to be in the right position for it to work properly. 6th check and adjust your point gap, then take a clean peice of paper and clean the points. 7th check the generator coils under the flywheel for proper resistance, also look for broken or shorted wires. 8th check the secondary ignition coil for proper resistance and be sure it is grounded properly. Make sure the spark plug is good, also check the spark plug boot. Hope this helps !!!