CV3440

FAQs & Troubleshooting

FAQs & Troubleshooting

How to adjust the looper thread tension

With the looper thread tension adjustment lever, fine adjustments can be made to the looper thread tension. When sewing stretch fabric or with a small stitch length, raise the lever to increase the tension of the looper thread. When sewing non-stretch fabric or with a large stitch length, lower the lever to reduce the tension of the looper thread.

 

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(1) Raise the lever to increase the tension of the looper thread.
(2) Lower the lever to reduce the tension of the looper thread.
(A) Looper thread tension adjustment lever

 

 

Non-stretch fabric such as serge

 

Reduce the tension of the looper thread.

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Lever position: Center   Lever position: Down

 

„„

Stretch fabric such as smooth knit

 

Increase the tension of the looper thread.

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Lever position: Center   Lever position: Up

 

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Related Models

CV3440, CV3550

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