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SAI OPERATION MANUAL

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24 Chapter 2 Getting Ready to Embroider 2 4. Adjust the tension of the under thread. Suspend the bobbin case by holding the end of the thread, and swing it back and forth. If the under thread comes out slowly, it means that the tension is set to the appropriate amount. If an adjustment is necessary, turn the thread tension adjustment screw using the bobbin-case-use flat head screwdriver. 5. Wrap the under thread twice around the thread guide coil. 1. Pull out about 5 cm length of under thread from the bobbin case. 2. Place the bobbin case inside the rotary hook and listen for it to click. 2.3.3 Placing in rotary hook Let the under thread hang loosely in front of the bobbin case.

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