HINTS
The Belt. The belt tension should be only enough to keep the belt from slipping. If the tension is incorrect loosen the screw W, Fig. 9, about one turn to allow the motor to drop downward. Now retighten the screw and the belt will be found to have the correct tension.
Machine working heavily. If the machine runs hard after being idle, oil with paraffin. Then run rapidly, wipe clean and oil with SINGER Oil.
Needles Breaking. See that the needle is not bent, the upper tension is not too tight, and the presser foot or attachments are securely fastened. Avoid pulling the material and do not sew heavy seams or thick goods with too fine a needle (see earlier table).
Breaking of Needle Thread. This may be caused by:- A knot in the thread. Improper threading. Tension being too tight. Thread being too coarse for size of needle. Needle being bent, having a blunt point, or being set incorrectly. Inferior needles and thread are often the cause of breaking. The eye in SINGER Needles is specially finished to prevent cutting of thread, while the best thread resists strain and is free from knots. SINGER Shops sell the best machine sewing thread.
Breaking of Bobbin Thread. This may be caused by:- Improper threading of bobbin case. Tension being too tight.
Skipping of stitches. The needle may not be accurately set into the needle clamp. It may be blunt or bent, or too small for the thread in use.

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Part 17
Index
Part 2
Part 3 Part 4
Part 5 Part
6 Part 7 Part
8 Part 9 Part
10 Part 11 Part
12 Part 13 Part
14 Part 15 Part
16