Operation Manual

5. Operation
5.1 Threading the needle thread
Caution - danger of injury
Turn off the main switch.
The needle thread may only be threaded with the sewing
machine at a halt.
–
Thread the needle thread as shown in the illustration.
5.2 Adjusting needle-thread tension
Preliminary tension 1
On the
467-183081
machine the needle thread needs to be under residual tension for
the thread cutter to function reliably when the main tensioner 3 is open.
The preliminary tension 1 should be set lower than the main tension 3.
–
Adjust preliminary tension 1 by rotating the Knurled nut.
–
After major changes to preliminary tension 1 the main tension 3 should also be
adjusted accordingly.
Main tension 3
The main tension 3 should be set as low as possible.
The looping of the threads must be in the centre of the material (see fig. a).
With thin material excessive thread tension can cause unwanted gathering and thread
breakage.
–
Adjust the main tension 3 so that the stitches are uniform.
5.3 Opening the needle-thread tensioner
Automatic
The main tensioner 3 is opened automatically:
–
when the thread is severed (sub-class
467-183081
).
Manual
The main tensioner 3 is opened manually:
–
when button 2 is pressed.
The main tensioner 3 remains open for as long as button 2 is held down.
–
when the sewing feet are raised with the knee lever (see chapter 5.8).
–
when the sewing feet are arrested in the up position (see chapter 5.9).
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