weird impeller on rio 3100

[wjhuie]

A friend gave me a rio 3100 today and the impeller is the oddest looking thing I have seen its not a needwheel, but it looks like it has 6 paddles that are on little pivots. Is this the right impeller or what?

[MarineFlake]

Yes, thats the correct impeller.

http://www.marinedepot.com/md_viewItem.asp?idproduct=TA4535