Singer One Instruction Manual 9 - Page 11

127-3 & 128-3 Tensions To Regulate the Tensions For ordinary stitching the needle and the bobbin threads should be locked in the centre of the thickness of the material, thus: FIG. 13. PERFECT STITCH The tension on the needle thread should only be regulated when the presser foot is down. Having lowered the presser foot, turn the small thumb nut (D, Fig. 5) at the front of the tension discs over to the right to increase the tension. To decrease the tension, turn the thumb nut over to the left. If the tension on the needle thread is too tight, or if that on the bobbin thread is too loose, the needle thread will lie straight along the upper surface of the material, thus: The tension on the bobbin thread is regulated by the small screw (1, Fig. 7) near the point of the shuttle. To increase the tension, turn the screw over to the right. To decrease the tension, turn the screw over to the left. FIG. 14. TIGHT NEEDLE THREAD TENSION If the tension on the bobbin thread is too tight, or if that on the needle thread is too loose, the bobbin thread will lie straight along the under side of the material, thus: When the tension on the bobbin thread has been once properly adjusted, it is seldom necessary to change it, as a correct stitch can usually be obtained by varying the tension on the needle thread. FIG. 15. LOOSE NEEDLE THREAD TENSION Table of Contents Previous Page | Next Page 11