Duerkopp Adler 745-23 Instrucciones de instalación y lista de piezas de repuesto - Página 13
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4.5 Checking the Positioning
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Before commissioning check the positioning set at the factory.
After turning on the main switch the sewing unit must position in
the needle high position (Position 2).
Checking the positioning
–
Turn the main switch off.
–
Bring the thread lever into a middle position by turning the
handwheel.
–
Turn the main switch on.
The sewing unit positions in needle high position (Position 2).
The thread lever must lie 2 mm behind its upper dead center.
–
Check the position of the thread lever.
If necessary correct the positioning.
Correcting the positioning
–
Loosen clamping screws 2 on the synchronizer.
–
Hold the synchronizer collar 1 tight.
–
Move the thread lever to 2 mm behind its upper dead center by
turning the handwheel.
–
Tighten the clamping screws 2.
–
Check the positioning again.
For the setting of the 1st needle position (needle low position)
see Service Instructions.
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