FAQs & Troubleshooting Latest CV3550 Not your product? 34 Results 31. 02/08/2017 How to adjust the stitch length 32. 01/08/2017 Free-arm sewing 33. 01/08/2017 How to adjust the looper thread tension 34. 01/08/2017 How to attach and remove the presser foot FAQs & Troubleshooting