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[impossible7]

[helen123]

The flywheel is fitted with permanent magnets inside the outer rim. As the flywheel rotates, the permanent magnets passs the capacitor charging coils of the stator producting AC voltage. The AC voltage is conducted to the switchbox where it is rectified and stored in a capacitor. The trigger assembly (also mounted under the flywheel) has coils. Each coil controls spark to 2 cylinders. The flywheel also has a second set of permanent magnets located around the center hub. As the flywheel rotates, the magnets pass the trigger coils producting AC voltage. The AC voltage is conducted to and electronic switch (SCR) in the switchbox. The switch discharges the capacitor voltage into the ignition coil at the correct time and in firing order sequence. [links]

[Bimmerhead]

That sequence occurs once per engine revolution for each cylinder.

[bitcoin2paysafe]

Spark timing is advanced or retarded by the movement of the trigger assembly attached to the throttle/spark arm.

[Shfork]

Capacitor voltage is conducted to the primary side of ignition coil. As the voltage goes to ground through the primary circuit of the coil, it induces a voltage rise in the secondary side of the ignition coil. This voltage can increase to approximately 40000 volts before bridging the spark plug gap and returning to ground.

[enoxice]

Stator generates electricity which is stored in a large capacitor in the switchbox. The trigger sends a signal to dump that charge into the ignition coil. If you have multiple coils, you have ADI Ignition. here

[checkmark91]

Here you go, sorry on the pics, the older manuals do not download well.

[brucebuck1]

All parts can fail. Between the stator and the flywheel, the stator is the more likely of the two to fail. That is why if there is nil electrical output the first check is for the lighting coil portion of the stator assembly. here

[Sammy T]

Thanks Parker for your quick reply and the diagram. A few quick questions regarding this:
1) In the diagram, they refer to the "Lighting Coil". Is this the same as the round 3 pin connector coming out of the stator?
2) When testing the lighting coil (lower diagram), do I start the motor and then disconnect the round 3 pin connector (with the 3 green wires) off the stator and then attach a multi meter to the prongs while running? Safe to do this? Also, do I set the multi meter to AC or DC for this test?

[Davex]

If a stator on a 2000 Yamaha ox66 200hp was bad what would the symptoms be on the motors performance? Is a stator a common issue with this motor?

[mezz]

or buy a stator and see what happens. here

[silverman]

Thanks in advance for the input !