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Line trimmer does not appear to have spark. How do you test a coil wire?

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You can connect a new spark plug to the spark plug wire and ground the spark end to the motor you should see a spark if not ajust coil to 010. from flywheel if no spark after that coil is bad get new coil

Posted on Jul 18, 2009


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Disconnect the small spade terminal wires from the coil itself and test for spark. If you do not have spark replace coil. If you do have spark check those small wires for insulation damage and grounding. If wires are OK check kill switch.
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  1. Remove the flywheel cover and pull the ground wire off of the off of the coil...
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