8B 8B-2 8BD OPERATION INSTRUCTION/PARTS MANUAL

TW3-8B and TW3-8BV are designed with sliding lever thread take-upvertical rotating hook to produce double lockstitch, timing teeth belt drivinglever-type stitch length mechanism and safety clutch mechanism. This series of machine is widely used in sewing bag luggage suitcase, seat cushion, especially for cylinder and curve articles.