NX-250 FAQs & Troubleshooting NX-250 Not your product? Sort by Updated Date Popularity 2 Results 1. 31/03/2016 I slide the stitch width adjustment, but I can not adjust the stitch width (zigzag width). 2. 25/02/2009 I slide the stitch length adjustment slider, but I can not adjust the stitch length. Sewing (Utility Stitches) FAQs & Troubleshooting