User manual SINGER 138B7MG

[. . . ] Remove red-handled seam ripper/thread trimmer and needle threader from accessory drawer. Table of Contents 7 Previous Page | Next Page TT700 WINDING THE BOBBIN 1. Push bobbin winder switch down to raise bobbin winder. Remove see-through bobbin cover by pulling it upwards. Check that bobbin case is in proper position. [. . . ] The diagram at right shows an overview of the threading procedure; refer to the specific instructions below for important details. Your spool of thread should be in the same position as it was for winding the bobbin, on the spool pin on the back of the machine. Cut the thread near the spool and pull the tail out of the thread guide and tension disc. Pull thread from spool and, using two hands, pull it through diagonal slit in thread guide A. Do not wrap thread around tension disc for sewing. Thread guide A should look like this when properly threaded. Guide thread around tension dial B and Pull thread between the tension discs. Table of Contents 12 Previous Page | Next Page TT700 THREADING THE MACHINE continued. . . Turn handwheel toward you until take-up lever is in highest position. Pass thread through hole in take-up lever C from right to left. Turn handwheel toward you so that needle lowers and thread guide D is accessible. Place thread behind thread guide D to the right side, and pull forward. Table of Contents 15 Previous Page | Next Page TT700 SECURING A SEAM There are two methods of securing the threads at the start and end of the seam repair. METHOD #1: Backstitching Turn stitch control knob to REVERSE (left) position and backstitch 4-5 stitches at start and end of seam repair METHOD #2: Tying off When seam is completed, use needle threader to pull top thread to underside of fabric. Tie a square knot with the bobbin thread and trim. FREE ARM MENDING A free arm for mending sleeves, Pant legs. To utilize this handy feature just slip the item onto the free arm. Table of Contents 16 Previous Page | Next Page TT700 ADJUSTING TENSION All tension adjustment is accomplished using the needle thread tension dial. The bobbin case tension is pre-set at the factory and cannot be adjusted. The tension level may be determined by using two different color threads for the needle and bobbin threads, and then analyzing the resulting stitches. When an even amount of thread is exerted on both threads, a smooth, even stitch known as a balanced stitch is produced. A perfect, well balanced stitch will have the needle and bobbin threads locked between the two layers of fabric with no loops on top or bottom and no puckering. Too much tension will produce a tight stitch, which will cause the fabric to pucker. To decrease tension, turn the tension dial Counter-clock-wise Too little tension will produce a loose stitch, which will cause loops in your seam. To increase tension, turn the dial clockwise ALWAYS DOUBLE CHECK THREADING BEFORE ATTEMPTING TO ADJUST TENSION! Table of Contents 17 Previous Page | Next Page TT700 CHANGING NEEDLES IMPORTANT For best results, : Use Size 90/14 needles. [. . . ] As indicated, the scoop section will be stuck underneath point C. Drawing D · Correct relationship of bobbin case, position plate and bobbin case housing. · Most important is that the rim of bobbin case supported by the rim of bobbin case housing. The bobbin case is floating on top of the bobbin case housing and the bobbin case housing turns easily under the bobbin case. Table of Contents 23 Previous Page | Next Page TT700 SPECIAL EDITION FOR ADJUSTING TENSION · Please note the needle thread tension dial can be rotated 9 full circle turns (From MIN to MAX). [. . . ]