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  1. S

    Idle adjustment procedure

    My 2006 5.7l 250 HP is idling My 2006 5.7l 250 HP is idling at 1100-1200 rpm. I have read that it should be more like 600-650. I have also read: "A special procedure must be followed to adjust idle rpm. Consult your Authorized Mercury MerCruiser Dealer before attempting this procedure. " Can...
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