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21 hp kohler courage sv610-3213 has no spark. Replaced coil and still no spark.

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First install a known good spark plug and check.

If still not firing disconnect the coil kill wire and test.

If still not firing and the flywheel magnets are good and strong then you have another bad coil. In this case put a voltmeter between the kill wire and ground. Now slowly cycle the ignition switch if any voltage spikes shows up then you a bad ignition that it has fried another coil. If this is the case then you must replace the ignition switch before you install another or the same thing will happen again

These ignition coils are not designed to have anything other ground applied the kill terminal. Applying the battery voltage at anytime will kill it ie intentional application of 12V.

Posted on Nov 20, 2014

Testimonial: "Hey Eugene, i tried what you said to do with ignition switch and coil. I didn't get a voltage spike. the mower was running and then just shut down. was cutting the grass at the time. I did notice an odor from the battery. Have new battery in it. Did old battery fry something?"


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Take the wires off the switch, and use a jumper wire between them(simulates the switch being closed.) Do this on one, if it doesn't work, move to the next one, etc until it spins over. If you want, you can even splice them together, or get some spade connectors and make permanent jumpers like most people do. Just don't do anything that the switches are supposed to protect against, like getting up off the seat and putting your fingers under the deck, or starting it in gear, or whatever.

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check and see if it's getting spark by removing the plug from the engine and keeping it plugged into the wire,lay the plug on the head and turn the engine over and look to see if the spark is jumping accross the gap. if it's blue your ok if it yellow you'll have to replace ignition modual..good luck

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It is not as critical as some think. A regular playing card works great. Place in between and tighten up the bolts, piece of cake as they say.

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Hi, the light will cancel automatically after another two hours use. Regards Phil.

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