Sewing start / Sewing test
Adjusting the thread tension
Sewing start
• The machine is switched on and the presser foot is raised.
• The fabric and the application have been selected.
Selecting the
fabric
• The thread has been selected.
Selecting the thread
• The combination of the needle and the thread is correct.
Selecting
the needle
• The stitch has been selected.
Stitch chart
• The machine settings based on the stitch selection have been
adjusted.
Machine settings
• Threading has been performed according to the stitch chart.
Threading preparation
• All threads are beneath the presser foot positioned to the back and left.
• The threader cover is closed.
> Lower the presser foot.
> Press the foot control to start the sewing process.
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A thread chain is formed.
If no thread chain is formed.
Machine settings
Sewing test
> Raise the presser foot.
> Place the fabric sample under the presser foot in front of the knife.
> Start sewing slowly, guiding the fabric lightly.
> Sew beyond the fabric end so that a thread chain is formed.
> Pull the thread chain over the thread cutter.
>
Assess the test sample and make the necessary fine adjustments, if
necessary.
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Machine settings / Troubleshooting
The thread tension has influence on the stitch formation. The stitch
chart provides a recommended default value for each stitch. This
recommended value can optimized for the different thread/fabric
combinations as follows.
The looper threads are intertwined on the wrong side of the fabric.
> Reduce the lower looper thread tension (red).
> Increase the upper looper thread tension (blue).
The looper threads are intertwined on the right side of the fabric.
> Reduce the upper thread tension (blue).
> Increase the lower looper thread tension (red).
The left needle thread forms loops on the wrong side of the fabric.
> Reduce the lower looper thread tension (red).
> Increase the left needle thread tension (yellow).
The right needle thread forms loop on the wrong side of the fabric.
> Increase the right needle thread tension (green).
> To reduce the thread
tension, turn the thread
tension adjustment dial
down to a lower value.
> To increase the thread
tension, turn the thread
tension adjustment dial
down to a higher value.
Threading the machine
LN RN
LN
RN
> Raising the needle via back-kick.
> Raise the presser foot and swing it out.
> Place the thread cones on the respective
spool pin.
> Engage the thread in the thread
pretension.
> Thread along the colored thread paths
markings.
Threading the looper
1 Open the threader cover and the looper
cover.
2 Set air threader connector to «I». The air
threader pipes are coupled.
3 Hold the thread end above the respective
air threader nozzle and press the foot
control.
4 Release the foot control as soon as the
looper thread emerges from the looper
eye.
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3
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Threading the needle
1 Select needle position yellow or green.
2 Press the needle threader lever down.
3 Pull the thread counterclockwise around
the thread deflector and through the
guide slots at the threader head.
4 Release the pressure on the needle
threader lever and let it go back to its
initial position. A thread loop is formed
behind the needle eye.
> Pull the thread end back.
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