Brother International SB170 Operation Manual - Page 14
Lower threading
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KNOWING YOUR SEWING MACHINE CAUTION ● Not winding the bobbin properly may cause the thread tension to loosen, and may break the needle. Put the bobbin in so the thread comes out 4 in the direction shown by the arrow. 1 2 1 Wound evenly 2 Wound poorly Lower threading Install the bobbin wound with thread. CAUTION ● Make sure you turn off the machine while threading. If you accidentally step on the foot controller and the machine starts to sew, you could be injured. Prepare the bobbin wound properly 1 before threading the lower thread. • See page 11 for the details about bobbin winding. Raise the needle by turning the 2 handwheel toward you (counterclockwise) and raise the presser foot lever. Remove the bobbin cover by sliding it and 3 lift toward you. CAUTION ● Make sure you set the bobbin so the thread unrolls in the right direction. If the thread unrolls in the wrong direction, it may cause the thread tension to be incorrect or break the needle. Hold the end of the thread, push the 5 bobbin down with your finger, and then pass the thread through the slit, as shown. • If the thread is not correctly inserted through the tension-adjusting spring of the bobbin case, it may cause incorrect thread tension. 1 1 1 Tension-adjusting spring 1 Bobbin cover 13