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3. Operating

3.1 Threading the needle

thread

Turn off main switch.

-Danger of injury! -

For threading the needle thread proceed

as shown in the figures opposite.

3.2 Threading the looper

thread

Turn off main switch.

-Danger of injury! -

For threading the looper thread also

proceed as shown in the figures

opposite. To do this, lift the thread down-

holder 3 out of its locked position.

3.3 Setting the thread

tensions

The needle thread tension must be

tighter than that of the looper thread.

The looper thread tension 2 is, therefore,

equipped with a spring made of thinner

wire.

Too tight thread tensions cause com-

pression of the material. A too loose

thread tension may lead to skipped

stitches.

For a larger amount of looper thread

pulled into the seam see section 3.5.

3.4 Needle thread amount for

secure stitch formation

In the case of elastic sewing threads, eg

synthetic spun threads or monofilament

threads, a certain amount of needle

thread must be pulled to assure a secure

stitch formation.

This takes place when the take-up lever

is in its bottom position in conjunction

with the height adjustment of the thread

regulator 1.

With the take-up lever in bottom position

adjust the thread regulator as follows:

In the case of elastic needle threads the

thread eyelet in the take-up lever should

be visible below the thread regulator.

Pass the needle thread on the left of the

bracket. See fig. a.

With unelastic threads, such as eg cot-

ton, the thread eyelet should be visible

above the thread regulator. Pass the

thread on the right of the bracket. See fig.

Abb. / Fig.