Whistling Prop

[Pat K]

I've been trying to find the right prop for a Stratos 386XF with a Yamaha F150. The one that performs the best for me has been a 14 1/2" X 18 four blade Michigan Vortex. The only problem is a loud whistling noise at 1000 to 1200 RPM. Does anyone have an idea what could be making the noise?

[Northlander]

Sounds to me like you dont have the spacing (thrust)washer in or in properly. Sounds like the prop is too tight. I wouldnt run it until you have it checked.

I had a prop that the thrust washer got stuck in and when I put the new prop on without the thrust washer in it it made a sound just like your explaining.

[Pat K]

Thanks for the feedback Northlander, I took it off and put it back on a couple times last night. Paid more attention to the instructions, used a torque wrench, but not sure if I did anything different. I'll take it out Fri. afternoon and hopefully the noise will be gone.

Pat K

[bassNspear]

If still sound, i would have someone look at it. Dont use it to much to the point where you might reck it alot.