Charging Help?!? GS650

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  • 94Ranger
    • Mar 2026

    #1

    Charging Help?!? GS650

    I don't think the bike is charging correctly. I've done BassCliff stator pages, Ohmed the stator out my readings were .8ohms on all three legs. I ohmed out the 3 legs to ground, they were O.L. and I tested the AC voltage at 4k, which was a fluctuating around 65ACVOLTS. Now, I have the R/R grounded to the frame, then a wire going from the same spot on the Frame to the Negative post on the Battery. At Idle charging voltage is 12.3, at 4k its 12.8. Should I just go ahead and replace the stator and voltage regulator? I just inquired this bike about a month ago from a kid that tore it all apart. I bought the bike in boxes. Help would be greatly appreciated.
  • BigD_83
    Forum Sage
    Past Site Supporter
    • May 2011
    • 4872
    • Vancouver

    #2
    The standard, no-load output for the 650 stator is 80 VAC, so it seem like it isn't up to snuff...as to why, it could be the R/R went belly up first.

    You'll probably see if the stator is really toast when you open the cover.

    I'm sure there are other things you could check, but I think it's safe to think that you'll end up replacing both.
    '83 GS650G
    '83 GS550es (didn't like the colours in the 80's, but they've grown on me)

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    • Nessism
      Forum LongTimer
      GSResource Superstar
      Past Site Supporter
      Super Site Supporter
      • Mar 2006
      • 35808
      • Torrance, CA

      #3
      65 VAC is low. I'd get a new stator and a SH775 R/R. Also rewire the charging system to eliminate voltage loss. There are at least 10,000 posts in the archives talking about charging system problems, including how to find a SH775 for cheap and how to rewire the system.

      Good luck
      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

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