F5 is correct. There are multiple windings on the stator. The largest one powers the CDI (all others are only for lighting and have nothing to do with making sparks). As long as the flywheel turns the CDI gets AC power. The bump on the flywheel triggers the pulser so the CDI knows when to fire.
It works like this:
1) single stator winding creates power for the CDI
2) pulser signals the CDI
3) CDI discharges through the ignition coil
4) voltage goes to the spark plug and jumps from the center electrode to ground
5) fuel combusts
The simplest thing that will stop the system is a ground problem in the ignition circuit. This means a bad kill switch or kill switch wire shorting out to the ground (frame/chassis).
The next thing is a bad connection somewhere (wire connection or gound connection). Check every wire in the ignition circuit and the coil mounting bolt.
Unscrew the plug cap from the coil wire. If the strands look dirty, trim the wire back a little and screw the cap back on.
I would unhook the Black/Red and Red/White stator wires that go the the CDI. They come from the single stator winding. Hook them to a multimeter set for AC voltage on a low scale. Kick the engine over; you should see the meter respond as the flywheel magnets pass by the winding. As long as it does something, that winding is probably OK.
After that you start changing parts (coil/pulser/CDI).
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2011 EC250E
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