FAQs & Troubleshooting Popular VX3250F Not your product? 37 Results 31. Upper thread tightened up 32. How do I remove or attach the presser foot ? 33. How do I thread my machine? 34. Tangled thread on wrong side of fabric 35. Zipper insertion [Video instructions] 36. Satin Stitching [Video instructions] 37. Start sewing [Video instructions] FAQs & Troubleshooting