Can I damage my amp and/or pre amp if I...

I just upgraded my system from a receiver to components. After hemorraging all my money, I find I am wanting for a tuner for FM. My question is, until I can afford a tuner, can I take the FM signal out of my former receiver, a Yamaha R9, and send it to the pre without damaging any of the components involved? There is a "Record Out" selector switch on the R9 that will direct a source signal from a CD or phono, for example, to a tape deck. Can I cable from the "Rec Out" jacks of the receiver to inputs at the pre amp after setting the "Rec Out" switch to "Tuner"?
Any help about this would be greatly appreciated. If there is another way to get an FM signal from my old tuner, please advise.
Thanks in advance.