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How can I trouble shoot the kill switch on a echo weed eater. The spark plug is good as it has ben tested on another machine. There is no spark and seems the kill switch should be the next obvious thing to check. Then the Coil?

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Check the kill switch terminals with a continuity tester (small multi-meter will work). If the switch is Ok and there is no spark, take off the engine cover and check the "air-gap" between the magnets in the flywheel and the ignition module legs.The closer the better, but you want about a ,008-.010"gap there...about the width of a standard sized business card. Metal feeler gauges "stick" of course to the magnet area in the flywheel and throw off clearance sensitivity. Try it with a business card. If not in range, then loosen the coil screws, double the card over, and let the magnets pull the coil legs into the card...retighten screws and check for spark.

Posted on Mar 15, 2011


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