The LOWER LOOPER (Part #20117009) is a genuine JACK original replacement part designed for JACK JK-798D, JK-788D and JK-798TDI and JK-797DI E3 series overlock machines, as well as Compatible for 5 thread machines, Siruba 700F and Speedway SW 757a series models. Manufactured to OEM specifications for precise fit and reliable performance. Equivalent Part Numbers JACK: 20117009 Compatible Machines This part fits the following industrial sewing machine models: Compatible: for 5 thread machines JACK: JK-798D, JK-788D, JK-798TDI and JK-797DI E3 Series SIRUBA: 700F series SPEEDWAY: SW 757a Technical Specifications Brand JACK Part Number 20117009 Part Type Loopers Condition New – OEM Original Looking for a replacement lower looper for your JACK JK-798D or JK-788D overlock machine? This genuine OEM part is also compatible with Compatible for 5 thread machines, Siruba 700F and Speedway SW 757a series machines. Shop with confidence — all parts ship from Miami, FL. ⚠️ Compatibility Notice: Always verify your machine model and subclass number before ordering. Part numbers and compatibility are provided as a reference only. Supra Sewing is not responsible for purchases made without confirming compatibility with your specific machine. All sales on replacement parts are final.
