Setting The Cutting Pressure - Duerkopp Adler 281 Service Instructions Manual

7.3 Setting the cutting pressure

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Caution: Risk of injury!
Turn off the main switch.
Check and set the cutting pressure only with the sewing machine
switched off.
When performing setting tasks within the hook area, both knives
should preferably remain in the machine. Thus avoiding unnecessary
adjustment work.
Standard checking
The threads must reliably be cut with the lowest pressure possible.
Low cutting pressure reduces the wear!
Two of the thickest threads to be sewn must reliably be cut
simultaneously.
Correction
–
Turn back the cutting pressure screws 1.
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Swivel forwards the hooked knife 3.
–
Set the fixed knife 2 against the hooked knife 3 by screwing in the
cutting pressure screws 1.
–
Alternately lay the thread to be cut to the right and to the left.
–
Adjust appropriate cutting pressure screw.
–
If the return spring 4 does no longer bring the cutting mechanism to
its starting position, then the cutting pressure is too high!
The fixed knife must be replaced against a new one.
Please note!
A regrinding of the fixed knife is allowed to a minor degree!
If the knife loses a lot of its length, it can no longer cut.
A new setting of the hooked knife cannot compensate it.
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