yanmar overheating. help

  1. sailscallny

    New to Hunters and over heating I think

    Just purchased a 1981. 36' hunter First time ouut today (just dewinterized) Motoring back 1/2 hr into iit the middle light and buzzer went unhappy 20 hp? Yanmar 3GMD? Or F. Don't know how to tell Checked fresh water antifreeze pump Impeller good, not damaged and pumping Gong to check the...
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