I have a 1965 Kenmore and I FM with it all the time. You need to:
1. drop the feed dogs.
2. Turn the presser foot dial to "O".
3. Turn the stitch length to "o".
4. You might need to adjust the tension if you have loopy threads on top or on the bottom.
I use a teflon sheet (I think it is called "Sew Slip" or "Supreme something) taped down so the quilt slides really good. There is a post somewhere here on the forum about using them.
http://www.quiltingboard.com/t-33038-2.htm#1828039
And some quilting gloves with the rubber fingers. You possibly have a "darning" foot or open toed foot(mine was with the applique accessories) in your accessory box. I love FM quilting, I've been doing my own for a year now.