Brother International BAS-612 Instruction Manual - English - Page 31
Well-balanced, Excessive, needle, thread, tension, Insufficient, excessive, bobbin, Narrower, Wider
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1. Bobbin thread tension e • The bobbin thread tension varies with the material and thread. Turn tension regulating screw 0 to adjust the tension. The standard tension is 40 to 50 g for medium-thick to thick materials when sewing with #50 spun yarn. O 2. Needle thread tension 3. Thread take-up spring • Turn tension control nuts 0 to adjust the needle thread tension. Once the bobbin thread tension has been adjusted, the needle thread tension adjustment alone can provide a well-balanced, neat seam. X 7• Well-balanced, neat seam Excessive needle thread tension r ff 'ent b thread tension Insufficient needle thread tension or excessive bobbin thread tension 'to 10 mm 20 to 40g © • I Wider Narrower 0 m ©- -(0 c Lower Higher • Thread take-up spring operation range The standard operation range of thread take-up spring 0 is 7 to 10 mm. To adjust the range of spring 0 , loosen screw 0 and turn stopper 0 . • Thread take-up spring tension 'he standard thread take-up spring tension is 20 to 40 g. "o adjust the tension, loosen screw (1) and setscrew 0 and turn tension stud 0. -27-