Hello Brenda,
I think that might be the serial number not the model number, the model number is usually under the stitch length dial or lever, you can adjust the tensions yourself, if you have a numbered tension unit it should be between 4 and 6, you will soon know if the timing is out because it will not pick up the stitches or miss stitches but make sure you have the needle in the correct way round and a new needle, if it is possible for you to e-mail a picture I could help you even more.
Ken
drivewithken@blueyonder.co.uk
June 2008
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