In my experience, if you have tried a new plug, earthed it well against the cylinder, diss connected the ignition switch and cranked the engine over at a good speed and there is still no spark, it is pointless testing the ignition unit as it is bad.
Testimonial: "Mr.White Strate to the point, But picked up weedeater engine cheep at g-sale that had bad bearing .Changed ignition out and still don't seam to have fire.Hard to beleave I picked up another bad one."
There is only two magnets that pass the core of the coil, this energises a capasitor in the unit, and is feed through the primary and secondary windings in the coil, this then produces a spark, if the unit is good there will be a spark, just make sure the the wire from the unit is not going to ground for some reason, i did not mean to be rude in any way, was the replacment unit the same as the one you took off?
Capisitor disscharge ignitions work off speed of rotation, so you have to assemble the starter and give it a good pull, as if you were trying to start it, there should then be a spark.
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Mr.White I did not take you to be rude in any way,I thought you got right on the problem.And I thank you for being direct.Yes the replacement was the same,and I set air gap with card.How fast does the fly wheel need to turn for visible spark?I tryed another weedeater that I have and didn't see spark there eather,but run's fine. Thanks
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