The nickname for your Kenmore model is the 1247 and sewusa.com seems to have it in stock:
http://www.sewusa.com/Sewing_Machine...ion_Manual.htm (The "nickname" of a Kenmore consists of the first one, two, three or four digits after the "158." or "148." or "516." or whatever - and there's apparently no rhyme or reason as to how that number is determined.)
Here's another company that has it in downloadable pdf format:
http://www.sewingmachinemanual.net/S...ion_manual.htm