This is a top tension issue, you need to check two things,
-make sure you thread the machine with the pressure foot up ( this allows the tension discs to open up so you can pull the fabric away from the machine with the foot up and allows the thread to get to bottom of the tension discs)
-make sure your tension settings are set to the medium setting. (Usually 4 or 5)
If this still does not help, then turn the top tension knob up (from 5 to 6,7,8,9....)
-If that still doesn't do it, your probably need the tensions reset, and your local family sewing store will be able to assist you further.
Answers & Comments
This is a top tension issue, you need to check two things,
-make sure you thread the machine with the pressure foot up ( this allows the tension discs to open up so you can pull the fabric away from the machine with the foot up and allows the thread to get to bottom of the tension discs)
-make sure your tension settings are set to the medium setting. (Usually 4 or 5)
If this still does not help, then turn the top tension knob up (from 5 to 6,7,8,9....)
-If that still doesn't do it, your probably need the tensions reset, and your local family sewing store will be able to assist you further.
-Chris