JUKI DX-4000QVP Instruction Manual page 43

■ Well-balanced thread tension
❺
❸
❹
❷
■ When the needle thread is too strong
❸
❷
■ When the needle thread is too low
❶
❶
❸
❹
❷
❶
❶
❶
❹
❸
❹
❷
<In the case of straight stitch>
The needle thread and the bobbin thread interlace with each
other approximately at the middle of material thickness.
❶ Needle thread
❷ Bobbin thread
❸ Fabric (right side)
❹ Fabric (wrong side)
❺ Middle of the fabric thickness
<In the case of zigzag stitch>
The needle thread is pulled a little bit to the wrong side of
material.
The bobbin thread will be pulled to the front side of the fabric.
In this case, decrease the thread tension value (to decrease
the needle thread tension).
The needle thread will be pulled to the wrong side of fabric.
In this case, increase the thread tension value (to increase
the needle thread tension).
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