Tunze prop not spinning

[SPotter]

I was cleaning my 6055 tonight and after putting it back together the prop is not catching to the shaft and not spinning. It doesnt look like anything broke or missing. Its the white prop.

 

[rvitko]

It is probably just worn and a new one will solve it, we changed to the blue props about 2 years ago and while the difference is just color, it would mean this drive unit is 2-5 years old and very likely has just worn enough that the prop can free spin.