Testing The Coil
- Using the lowest scale on the meter, measure the resistance between the primary terminals with the wires removed. It should read 2.5 to 4.5 Ohms.
- Using the highest scale on the meter, measure between one of the primary terminals and the center core of the coil. There should be infinite resistance (open circuit).
- Measure between one of the primary terminals and one of the plug wire terminals. Again, there should be infinite resistance.
- Measure between one of the plug wire terminals and the core of the coil. Again, there should be infinite resistance.
- Measure from one plug terminal to the other. It should read 15,000 to 20,000 Ohms
Testing The Ignition
- Use a voltmeter and check for battery voltage on each of the red/white wires with the key and kill switch are turned on.
- The dual output coil has to have both spark plug wires connected to a spark plug at all times.
- To test for spark, connect one of the spark plug wires to a spark plug that is grounded to the engine.
To Test For Spark Without Having To Turn The Engine Over:
- Remove the ignition rotor.
- Remove the locating pin in the advance rod.
- Reinstall the rotor, but without the pin.
- Replace the nut holding the rotor on loosely. This will allow you to spin the rotor to produce a spark without having to turn the engine over.
- Connect one of the spark plug wires to a spark plug that is grounded to the engine, but not installed in the engine.
- Make sure that the other spark plug wire is connected to a spark plug in the engine.
- Turn on the ignition switch and the kill switch.
- Spin the rotor while looking at the gap in the spark plug for a spark.
- Turn off the kill switch and the ignition switch.