5-11
[Fig.5-18]
[CAUTION 1]
Winding the bobbin off-center or uneven as shown below can cause thread breaks, skipped stitches,
or thread tangles.
[CAUTION 2]
Too tight tension of the bobbin thread may block smooth pulling of the thread and cause thread breaks or
short tails.
3) Adjustment of bobbin thread status
① The thread should be wound around the bobbin in
parallel. Otherwise, loosen the tightening screw
for the thread winder's tension adjusting holder
and move the thread guide body left or right for
adjustment.
② Adjust the thread tension on the bobbin using a
tension adjuster nut.
[Fig.5-17]
Thread tension
adjusting nut
Tension adjusting holder
Tightening screw for the tension
adjusting holder
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