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CP-7500 > FAQs & Troubleshooting > Preparation > faqh000438_004
Bobbin-winding thread guide Bobbin winder shaft Bobbin
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Notch Bobbin winder shaft spring
Do not grab the bar to raise the spool pin, otherwise, the spool pin may bend or break.
Spool pin Spool cap
Be sure to raise the spool pin when winding the bobbin.The thread may become tangled if the bobbin winder is used without raising the spool pin.
When sewing with fine, cross-wound thread, use the small spool cap, and leave a small space between the cap and the spool.
Spool cap (small) Spool (cross-wound thread) Space
Thread guide cover
Bobbin-winding thread guide
Make sure that the thread passes under the pretension disk.
Hook Pretension disk Pull it in as far as possible.
Make sure that the thread is pulled as far as possible into the pretension disk, otherwise the bobbin may not be wound cleanly.
Slit in bobbin winder seat (with built-in cutter)
Be sure to cut the thread as described.If the bobbin is wound without cutting the thread using the cutter built into the slit in the bobbin winder seat, the thread may become tangled in the bobbin or the needle may bend or break when the bobbin thread starts to run out.
Sewing speed controller (For models equipped with the sewing speed controller.)
Not winding the bobbin properly may cause the thread tension to loosen, and may break the needle.
Wound evenly Wound poorly
CP-6500, CP-7500, HS-2500, SC9500
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