Innov-is NQ3700D FAQs & Troubleshooting Innov-is NQ3700D Not your product? Sort by Updated Date Popularity 3 Results 1. 26/04/2022 How to adjust the thread tension 2. 28/02/2017 How do I sew with the twin needle? 3. 28/02/2017 How do I thread the machine (Threading the upper thread)? Getting Ready FAQs & Troubleshooting