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Line 57: − + − − [[File:S-and-z-twist-figure.png|250px|thumb|right|The difference between S-twist and Z-twist thread.]] − − On the Consew you must use z- or left twist thread for upper/needle thread, but you can use either s-/right or z-/left twisted thread for lower/bobbin thread. If you use the wrong thread in the needle it will unravel, and the machine will jam. To learn more about this, see [https://www.servicethread.com/blog/left-twist-vs.-right-twist-industrial-sewing-thread-differences-and-applications this explanation].
→Description
Please refer to the manual to learn the anatomy of the machine. You will need to know how to replace a broken or damaged needle. The needle must be seated with the scarf to the right. You can be certain the needle is fully seated when you cannot push it up any further in the needle bar. See this article regarding a needle's structure: https://en.wikipedia.org/wiki/Sewing_machine_needle
Please refer to the manual to learn the anatomy of the machine.
· Question regarding the thread controller spring, because they’ll need to make that adjustment themselves and should know what it is, where it is, and how to do that.
· Question regarding the thread controller spring, because they’ll need to make that adjustment themselves and should know what it is, where it is, and how to do that.