Threadtension Adjustment - Singer 522D Instruction Manual And Parts List

3.6
Thread Tension
Adjustment
Important
The thread tension
should be adjusted
according to the fabric
type and thickness,
sewing thread, seam
width, stitch length and
others. Therefore the
pressure of the tension
nuts or thread guides
must be adjusted in
each individual case.
The following adjustments are related
to Figure 24.
To loosen
High Speed Flat Bed Interlock Sewing Machine
• Knobs 1: Control the needles thread
• Knob 2: Controls the top cover thread
• Knob 3: Controls the looper thread
To tighten
Figure 24
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