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Dual Sew 3300 Mechanical Sewing Machine Questions & Answers
Thread is bunching up then breaks on the top
The top thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle
8. Try a different spool or cone of thread
How to thread a dual sew 3300?
Rather than seek a lengthy explanation it will be good that you follow the guidlines in the manual received along.
Starting from the bobbin at the top the thread must be passed around to reach the needle in the sequence described.This machine ahs a automatic tthreading and so the automatic threading feature enables the machine to thread itself from the top thread spool through the eye of the needle.
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