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Tecumseh oh 140 solid state module

Is there any way to test the electronic module to ascertain whether it is faulty?

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Check that the gap between the flywheel magnet and the module is correct, take the kill wire off the module, hook up a spark tester to the output of the module (spark plug removed), spin the flywheel - No spark means that the module is bad.

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Carl

Posted on Dec 02, 2008

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If you did see battery voltage at the charge terminal, start the engine, switch the voltmeter to measure AC voltage and measaure the voltage from one of the outside terminals to the other, you should see 15 volts or more (be careful not to short out anything). If you get a nice AC voltage, switch back to DC and measure the charge output again (engine block to middle tab), it should be greater than the battery voltage we measured before and it should be slowly getting greater, if not the rectifier/charger module is bad.
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