CV3440
![]() |
FAQs & Troubleshooting |
Fabric is puckered
Check for the following matters.
-
Probable cause
Adjustment of thread tension is not performed properly.
Remedy
Adjust the thread tension properly.
Position "4" on the tension dial is the standard of thread tension.
Start the adjustment with "4" when adjusting thread tension.
When adjusting the thread tension, change the tension dial position little by little and then check the sewing result with trial sewing.Refer to the instructions to learn the adjustment of thread tension.
-
Probable cause
The threading on the machine is improper.
Remedy
Make sure that the threads are passed into the machine properly.
Rethread the threads to the machine in an appropriate procedure.Refer to the detailed instructions to learn the threading procedure.
Instructions for threading the machine.
You can also see the instructions for threading on movie.
-
Probable cause
Thread is tangled.
Remedy
Check thespool pin, thread holders, etc., and remove the tangled thread.
Remove the tangled thread from the machine.
-
Probable cause
Differential feed adjustment is improper.
Remedy
Perform the differential feed adjustment with the differential feed adjustment dial properly.
(1) Differential feed adjustment dial
For more information, refer to the instructions "Differential feed adjustment".
Instructions for adjusting the differential feed.
You can also see the instructions on movie.
Video instructions: "How to adjust the differential feed".
Related FAQs
- Adjusting the thread tension dials
- Preparation before threading
- Differential feed adjustment
- Adjusting the presser foot pressure
- Threading the machine [Video instructions]
- How to adjust the looper thread tension
- How to adjust the stitch length
- Basic operations and sewing [Video instructions]
- How do I thread the machine?