CS-100T/4000/5000H FAQs & Troubleshooting CS-100T/4000/5000H Not your product? Sort by Updated Date Popularity 1 Results 1. 09/24/2020 How to use the Bobbin Work Kit. (Optional accessory : SABWRK1 / BWRK1) [Video instructions] Instructional videos FAQs & Troubleshooting