And Joe, several 158 series Kenmores will also do a chainstitch...the ones that have the little needle plate insert that you turn around for straight or zigzag like this
http://www.ebay.com/itm/NEEDLE-PLATE...3b77b8538...or this
http://www.ebay.com/itm/NEEDLE-PLATE...item43b77b840c & all of these have metal gears. My 158.17550 does a gorgeous chain stitch. It came with a chain stitch needle plate insert & you take out the bobbin case & put in the chain stitch looper.