5.3 Cutting Pressure / Position Of The Stationary Knife - Duerkopp Adler 511 Service Instructions Manual

5.3 Cutting pressure / Position of the stationary knife

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Caution – Risk of injury !
Turn the main switch off.
Check and adjust the stationary knife only when the automatic
bartacker is switched off.
Rule and control
The thread trimmer lever 2 should have a distance of 18.5 mm to the
front edge of the throat plate 3.
There must be 0.5 mm of clearance between the needle hole 4 and
counter-knife 1.
The counter-knife 1 should be aligned in such a way that both threads
are safely cut in the middle of the cutting area and with the lowest
possible pressure.
A low cutting pressure ensures a low wear and tear on the knives.
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Measure the distance between the thread trimmer lever 2 and the
front of the throat plate 3.
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Measure the distance between the needle hole 4 and the
counter-knife 1.
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Turn handwheel until the hook knife can be swivelled in manually.
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Swivel out hook knife.
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Lay two threads to be cut in the hook knife.
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Turn the handwheel until the hook knife has swivelled back.
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Check whether the sewing threads are neatly cut.
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