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6.5 Needle replacement
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- Turn with the hand wheel as far as the top needle (1) position
has been reached.
- Loosen the screw (2) and take the needle out.
- When inserting a new needle, care is to be taken that groove
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(3) above the needle's eye was in the same direction as the
hook.
- Tighten the screw (2).
6.6 Regulation of pressing the top roller
The pressing of the top roller should be as low as possible but
on a level so that the top roller would not fly over when needle
comes off the material and that the feeding power got over
the thread pull by stitch tightening.
By turning of the screw (1) clockwise pressing of the top roller
has been increased, by counter-clockwise turning pressing of
the top roller has been decreased.
6.7 Lifting the top roller up
Mechanical lifting of the top roller is enabled by means of the
hand lever (1), which contemporarily, after it has been lifted in
the arrow direction, is locking the top roller in its top position
and turning (adjustment) of the machine is possible. The top
roller can be lifted via knee lever or left treadle - depending on
the machine sub-class. Automatical lifting by means of elec-
tromagnet is described in the paragraph No. 7.
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Caution! Risk of injury!
Before remowing and inserting the needle turn
the main switch off and wait until the motor
stops!
The inserted needle must respond to the sewing
category according to paragraph No. 5, table 3.
Otherwise it will cause damage to sewing, or even-
tually the machine could be broken.
When lifting top roller via knee lever or the treadle
or electromagnet, the needle must be in the upper
position and the machine has to come to a full
stop.
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