PR670E / PR670EC
FAQs & Troubleshooting |
How do I adjust the tension of the bobbin thread ?
The following procedure describes how to adjust the thread tensions. After adjusting the tension of the bobbin thread, adjust the tension of the upper thread for each needle bar.
Different weights are used to adjust pre-wound bobbins and metal bobbins.
Pre-wound bobbins: Only weight (L)
Metal bobbins: Weight (L) and weight (S)
* Weight (S) is included with the optional bobbin winder.
If the thread with the weight attached is slowly pulled out, the thread tension is correct.
(1) Tension-adjusting screw (2) Tighter (3) Looser |
In the built-in embroidery patterns, one pattern is used for checking the thread tension. By sewing this pattern, the thread tension can easily be checked. For details, refer to "How do I check the thread tension ?".