Originally Posted by phillywakeboarder
That sounds like a drive shaft whine to me. Check to see if it does it when you come off plane, with the throttle in neutral, right before the boat stops, i.e., when the drive shaft is spinning slowest and coming to a stop.
I know this is an old thread, but I'm having this exact issue what you described on my 2011 Axis A20. It started off as only whining as I come off plane, after driving it for a while, then it started to whine at low rpm while idling in forward gear.
Pillywakeboarder, Can you please elaborate a little more about it? Is there anything I should check or test? If I can deal with the sound, any potential for getting stranded or damaging other components? Maybe you could point me in a direction?