Yammie ignition interrupts.

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  • spyug
    • Feb 2026

    #1

    Yammie ignition interrupts.

    Can anyone tell me how they are strung together, if they are, and how the ignition sequence works once you turn the key and stab the button.
    Its not laid out very clearly in the manual.

    Along with transmission issues, my FZ "project" (for that's what its become) now has developed an electrical problem that I suspect is interrupt related. turn the key and press the button and there is absolutely nothing, even the headlight won't come on. Battery is good as are all fuses.

    I know there is a clutch interupt switch and a side stand switch and sidestand relay, there is also mention of an ignition safety switch and of course the run/kill switch and a diode block as well (which I have no idea of what it does). I'd just like to get a sense of how they are designed to work.

    the manual does refer to a series of resistance tests for each component but other than that there is not much in the way of trouble shooting.

    As always, any assistance would be greatlfully accepted.

    Cheers,
    spyug
  • tom203
    Forum Guru
    Past Site Supporter
    • Aug 2010
    • 8925
    • Norway,Maine

    #2
    I came across this info on ninja forum years ago- good explanation of the safety interlock switches. Some of it might apply to your yamaha and might get you thinking.
    Thank goodness that my bike has none of this false sense of safety stuff.

    1981 gs650L

    "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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    • Nessism
      Forum LongTimer
      GSResource Superstar
      Past Site Supporter
      Super Site Supporter
      • Mar 2006
      • 35789
      • Torrance, CA

      #3
      Yammie?
      Ed

      To measure is to know.

      Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

      Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

      Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

      KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

      Comment

      • SVSooke

        #4
        Originally posted by Nessism
        Yammie?
        From the OP's sig:
        1985 Yamaha FZ 750 "Saturn 5" 'cus it takes off like a rocket! The new ride.

        Comment

        • Nessism
          Forum LongTimer
          GSResource Superstar
          Past Site Supporter
          Super Site Supporter
          • Mar 2006
          • 35789
          • Torrance, CA

          #5
          Google search on "yammie" turned up this...

          Ed

          To measure is to know.

          Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

          Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

          Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

          KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

          Comment

          • spyug

            #6
            Thank you Tom, very helpful and just what I was looking for.

            That will help a lot.

            cheers man,
            Spyug

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