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When the machine is not in use, be sure to keep it unplugged. Cover the machine with the dust cover to
protect it from the dust. Store the machine, so it is not exposed to direct sunlight or humidity.
Have your cover stitch machine serviced regularly by your local authorized dealer!
If you have followed the trouble shooting information. If there is a specific problem, it is a great help to test sew
with your thread on a scrap of your sewing fabric and bring it to your dealer. A sewing sample will often give
much better information than words.
Non-original Parts and Accessories
The warranty does not cover any defect or damage caused by use of non-original accessories or parts.
(2) STORAGE
(3) SERVICING
24. TROUBLE SHOOTING
Solution
Fabric does not feed well
Needle breaks
Thread breaks
Stitch skip
Irregular stitches
* Lengthen stitch length.
* Increase presser foot pressure for heavyweight fabric.
* Decrease presser foot pressure for lightweight fabric.
* Check the differential feed.
* Insert needle correctly.
* Do not pull fabric while sewing.
* Tighten needle set screw.
* Use a larger size needle on heavy fabrics.
* Check threading.
* Check for tangled or caught thread.
* Insert needle correctly.
* Insert new needle, current needle may be bent or have a blunt point.
* Use high quality thread.
* Loosen thread tension.
* Balance thread tension.
* Check for tangled or caught thread.
* Check threading.
* Insert new needle, current needle may be bent or have a blunt point.
* Tighten needle set screw.
* Insert needle correctly.
* Change type or size of needle.
* Check threading.
* Increase presser foot pressure.
* Use a high quality thread.
Problem
Fabric Puckers
* Loosen thread tension.
* Check for tangled or caught thread.
* Use high quality lightweight thread.
* Shorten stitch length.
* Decrease presser foot pressure for lightweight fabrics.
* Check the differential feed.
Summary of Contents for MK 4055
Page 1: ...INSTRUCTION BOOK INSTRUCTION BOOK INSTRUCTION BOOK...
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