I have a 2018 Craz and from day one it has had this high pitch whine at 1000rpm and seems to only happen moving forward. Video Below: Starts right around 9 seconds in you will hear the sound come as the boat gets to 1000rpm. Haven't noticed it in reverse. Boat now has 17 hours on it and it hasn't gone away. Dealer initially said just keep an eye on it but now I have it back with them for the 20 hour service and I've asked them to help resolve the whining noise. It is pretty high pitch and really irritating. It's right at the almost ideal no wake speed! Almost sounds like a harmonic resonance type sound.

Has anyone else had this on their boat? Any ideas of what to go after? I was thinking maybe shaft alignment but I'm not sure. Salesman said he heard it during another demo on a Craz Pro they sold recently too but the service department said they hadn't heard of this before. I'm in no way doubting their skills and they hopefully will figure it out! But I thought I'd ask here too and see if anyone else had this happen so we can pinpoint it faster.

I probably should have taken the video with the engine compartment closed to muffle some of the normal engine noise.

https://www.youtube.com/watch?v=XUBF49wBf2o