There are pics and replacement instructions in some thread on this site...

 

If you have a link please do post it.

 

go manual, had mine in all summer and its fine. just make sure you tighten all bolts and lock but tight. obvo you dont have to check it all the time. if it loosens up and the rattle will come back youll just need to retighten but if you tighten the lock nut on the threaded shaft tight enough it shouldnt come loose. if your scared put a liitle locktite on it.