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2 year old Northern lights with 61.7 hertz under load

Discussion in 'Generators' started by motoryachtlover, Jul 17, 2019.

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  1. motoryachtlover

    motoryachtlover Senior Member

    Joined:
    Jan 29, 2007
    Messages:
    241
    Location:
    smithfield, VA
    My 2 year old northern lights 20KW genny shows 61.7 hertz under load. Is this a problem? Thanks for your time.
  2. Pascal

    Pascal Senior Member

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    Location:
    Miami, FL
    It s a little high if under a full load. What do you get lightly loaded? Won’t really hurt anything though.
  3. Capt Ralph

    Capt Ralph Senior Member

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    Sep 8, 2004
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    Location:
    Satsuma, FL
    Your old 120Vac clocks may run faster.
    62 htz will not hurt anything.
    It's just a minor/micro governor adjustment.
    With a good freq meter you can do it your self but at 62 htz, not a worry.
  4. motoryachtlover

    motoryachtlover Senior Member

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    Location:
    smithfield, VA
    Thank you both for your responses
  5. Capt Ralph

    Capt Ralph Senior Member

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    Sep 8, 2004
    Messages:
    8,274
    Location:
    Satsuma, FL
    Remember, at 1000 hours you have a cold valve adjustment. Order your new spaghetti top valve cover gasket and air filter.
    Have a quality htz meter and adjust all then.
    Usually at the first 1000 hours I really rinse the sump and if not already using it, change to Shell T5 10w40.
    New belt, eye ball the raw pump real well.
    Back flush the H E.
    Dip the coolant and adjust coolant supplement. Fix all leaks.

    It's all in the manual.
  6. 55 Sea Ray R

    55 Sea Ray R New Member

    Joined:
    Oct 11, 2018
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    Location:
    Naples FL
    I have a Westerbeke and the guy told me 58-62 is ok.