HELPFUL HINTS

PROBLEM

CAUSE

CORRECTION

Page

 

 

 

 

 

Machine not properly threaded.

Re-thread machine.

28

Upper thread

Thread entwined around bobbin.

Remove entwined thread.

26

breaks

Needle inserted incorrectly.

Re-insert needle.

16

 

Thread tension too tight.

Readjust thread tension.

36

 

Thread of incorrect size or poor quality.

Choose correct thread.

16

 

 

 

 

Lower thread

Bobbin threaded incorrectly.

Re-thread the bobbin.

26

breaks

Bobbin wound unevenly or too full.

Rewind the bobbin.

24

 

Dirt on the bobbin holder.

Clean the holder.

88

 

 

 

 

 

Needle inserted incorrectly.

Re-insert needle.

16

Machine skips

Bent or blunt needle.

Insert new needle.

16

stitches

Incorrect size of needle.

Choose correct size needle for

16

 

 

fabric.

 

 

(on stretch fabric)

(use stretch needle)

 

 

 

 

 

 

Machine not properly threaded.

Re-thread machine.

28

Fabric puckers

Bobbin threaded incorrectly.

Re-thread the bobbin.

26

 

Blunt needle.

Insert new needle.

16

 

Thread tension too tight.

Readjust thread tension.

36

 

 

 

 

Machine makes

Bobbin threaded incorrectly.

Re-thread the bobbin.

26

loose stitches or

Machine not properly threaded.

Re-thread machine.

28

loops

Tension not adjusted properly.

Readjust thread tension.

36

 

 

 

 

Stitch pattern is

Presser foot is not suited for the pattern.

Attach correct foot.

44-

misformed

Thread tension is not balanced.

Adjust the thread tension.

36

 

 

 

 

Threader does

Needle is not raised.

Raise the needle.

20

not thread

Needle inserted incorrectly.

Re-insert needle.

16

needle eye

Bent needle.

Insert new needle.

16

 

 

 

 

 

Feed dogs are lowered

Raise the feed dogs

20

Machine does

Stitch length not suitable for fabric.

Regulate stitch length.

38

not feed properly

Lint and dust accumulated around feed dog.

Clean the feed dog area.

88

 

Pressure regulator set too low.

Increase pressure.

20

 

 

 

 

 

Fabric pulled while sewing.

Do not pull fabric.

32

 

Needle is hitting the presser foot.

Select correct foot and pattern.

44-

Needle breaks

Needle inserted incorrectly.

Re-insert needle.

16

 

Incorrect size needle or thread for fabric

Choose correct size needle and

16

 

being sewn.

thread.

 

 

 

 

 

Machine runs

Dirt or lint accumulated in the hook race and

Remove the needle plate and

88

with difficulty

feed dog.

bobbin holder and clean the

 

 

 

hook race and feed dog.

 

 

 

 

 

 

Cord not plugged into electrical outlet.

Insert plug fully into outlet.

18

 

Power switch is not turned on.

Turn on the switch.

18

Machine will not

Bobbin winder spindle is pushed to the right.

Push spindle to the left.

24

run

Presser foot is not lowered.

Lower the foot.

20

 

Buttonhole Sewing Mode;

 

 

 

* Buttonhole lever is not lowered completely.

Lower the buttonhole lever.

64

 

* Buttonhole foot is not attached.

Attach the buttonhole foot.

64

 

 

 

 

90

 

 

 

9940EFSt.pm6

90

2003.9.10, 8:33 PM

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Singer 9940 instruction manual Helpful Hints, Problem Cause Correction
Page 89 Page 91

9940 specifications

The Singer 9940 is an advanced sewing machine that cater to both novice and experienced sewists, offering a variety of features and technologies that make sewing more efficient and enjoyable. This machine is widely recognized for its versatility, precision, and ease of use, providing an ideal solution for a range of sewing projects from simple alterations to intricate garment making.

One of the standout features of the Singer 9940 is its extensive stitch selection. With over 600 built-in stitches, including utility stitches, decorative stitches, and alphanumeric stitches, users can easily find the right stitch for every project. The machine's programmable capabilities allow for customization, which is perfect for those looking to personalize their sewing creations.

The Singer 9940 incorporates a user-friendly LCD touchscreen display, making navigation between different stitches and settings exceptionally straightforward. The brightly lit workspace ensures that users can sew with clarity, even in low light conditions. Additionally, the machine offers a range of presser feet options that enhance functionality, including walking feet, quilting feet, and zipper feet, enabling sewers to tackle various techniques with ease.

Technologically, the Singer 9940 employs an advanced needle threading system, which simplifies the winding and threading process, significantly reducing setup time. The automatic needle threader, a staple of modern sewing machines, ensures precise threading with minimal effort. For added convenience, the machine features an adjustable presser foot pressure, accommodating multiple fabric types from lightweight silk to heavy denim.

Another impressive characteristic is the speed control function, allowing the user to adjust the sewing speed according to their comfort level. The machine can sew at speeds of up to 1,000 stitches per minute, perfect for those who like to work quickly. Furthermore, its built-in reverse lever supports easy locking of seams, offering durability and a professional finish.

The Singer 9940 is equipped with a heavy-duty metal frame that ensures stability and longevity, ensuring that it can withstand regular use without compromising on performance. For sewing enthusiasts looking to dive into quilting, the machine's extension table provides extra space, facilitating larger projects and ease of movement.

In summary, the Singer 9940 stands out in the sewing machine market for its vast array of features, advanced technology, and user-friendly design. Whether crafting clothing, creating home décor, or embarking on quilting endeavors, the Singer 9940 proves to be a reliable companion in the creative process, making it a favorite among sewing enthusiasts.
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