NX-650 FAQs & Troubleshooting NX-650 Not your product? Sort by Updated Date Popularity 32 Results 31. 10/04/2018 How to use the 5 Groove Pin Tuck Foot. (Optional accessory : SA194 / F069) [Video instructions] 32. 10/04/2018 How to use the Adjustable Binder Foot. (Optional accessory : SA198 / F071) [Video instructions] Instructional videos FAQs & Troubleshooting