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  1. 09-05-2007 01:30 PM #1
    LENZ
    LENZ is offline Senior Member
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    Nov 2006
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    generator Onan 7.5kw

    I have a 1972 DCMY and the problem I have is my generator will stop running after i get the boat up to cruising speed about (10knots). but runs great while the boat is anchored or cruising around 5-6 knots. I just changed the oil and filter and double checked the coolant level which was fine. any idea's?

    Thanks in advance
    Lenz
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  2. 09-05-2007 01:45 PM #2
    Bob Bradley
    Bob Bradley is offline Senior Member
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    Re: generator Onan 7.5kw

    Could it be that it stops getting raw water in at that speed and the overheat shutoff turns it off? Watch the outlet while you are running and see if it stops shooting out water once you hit 10 kts.
    Everyone should believe in something - I believe I will go fishing - Henry David Thoreau
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  3. 09-05-2007 10:18 PM #3
    spartonboat1
    spartonboat1 is offline Senior Member
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    Re: generator Onan 7.5kw

    Yes, the overheat sw is very effective in shutting down your genny (Onan 7.5 on same year 43'MY). Obviously, I speak from experience. Try that first, then repost if is not the obvious cure...
    50 Years on the Great Lakes...
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  4. 09-06-2007 11:18 AM #4
    Will
    Will is offline Senior Member
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    Re: generator Onan 7.5kw

    Where is the source end of the fuel line connected? If it's running to one of the mains instead of directly to the tank, the gen. could be starved for fuel when the main gets up to speed.
    Will
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