Duerkopp Adler 550-12-12 Installation Instructions Manual - Page 4
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2.2 Mounting the Thread Stand
2.3 Checking the V-belt Tension
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Mount the thread stand on the table top as shown in the sketch above.
After transport the V-belt tension set at the factory is to be checked.
The V-belt 1 must be so tensioned that it can be pressed in at the
center by about 10 mm under finger pressure.
Correcting V-belt tension:
–
Loosen the nuts 2.
–
Swing the sewing drive 3 until the desired V-belt tension is
reached.
–
Tighten the nuts 2 again.
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2
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