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No Spark - Cub Cadet model 71 with a Kohler 8hp

I have a cub cadet model 71 with a Kohler 8hp with no spark. So far I have replaced the spark plug, spark plug wire, coil, condenser and key switch. The points are about one year old and I cleaned them lightly with sand paper and then a business card. I replace the black wire between the key switch and the positive terminal on the coil. Help! What should I check/try next?

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  • Matt Wilson
    Matt Wilson Oct 06, 2009

    I will do that. It's a bit of work to take the engine out and apart to get to it. One question: I don't see reference to the magneto in the wiring diagram:
    May be a dumb question but how is the magneto related to providing spark on the Kohler K181 engine?

  • Matt Wilson
    Matt Wilson Oct 06, 2009

    I think the ignition is magneto powered. I looked at the Kohler K181 engine diagram under:
    and it lists the magneto under the flywheel as Stator Assembly. This is a 1967 Cub Cadet tractor that was running before I took it apart and repainted/restored it. It now looks great but does not start. I have checked every wire connection several times to ensure I have a good connection. I ended up replacing several parts "guessing" at the problem and it's starting to get expensive. I'm restoring more parts then I expected! It does not have modern safety switches and it is pretty simple...I just can't figure out why I don't have any spark.


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Check condition of the magneto,located under the flywheel

Posted on Oct 06, 2009

  • rtpflh
    rtpflh Oct 06, 2009

    I'm not familiar with your specific motor,but if the ignition is battery powered.check 'saftey'switches that ground the ignition when gaurds are removed,clutch is not depressed,etc.

  • rtpflh
    rtpflh Oct 07, 2009

    sometimes the light at the end of the tunnel is a train bearing down on you!! clean rust from stator,clean mag. 'pick-up'.


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