Checking The Knife Height - DURKOPP ADLER 540-100-1 Manual Complete

3.6 Checking the knife height

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Rule:
The knife point is needed only when diving into the material. The knife
point should not leave the throat plate during the cutting procedure.
CAUTION !
Ensure that the lifted basket has a minimum distance of 1mm
between the upper thread scissors and the bottom knife edge.
Note !
When a knife is sharpened, its length will be shorter.
With the insertion of the sharpened knife the knife height may
need to be corrected.
Adjusting:
–
Position the material under the clamp and start the sewing process.
–
Stop the sewing process during the cutting process on the reverse
buttonhole seam stitch by pushing the pedal backwards.
–
Make the slit on the throat plate visible by pulling the material a
little away from the clamp.
–
Turn the hand wheel in the direction of rotation until the knife has
reached its highest position to the throat plate.
–
In this position 0.2 mm of the knife point should remain dipped in
the throat plate slit.
–
Knife height adjustment: Loosen screw 1.
Push the knife as far as needed until the correct knife position has
been reached.
Re-tighten screw 1.
–
Loosen screw 3.
–
Push stop 2 right up to the knife
–
Re-tighten screw 3.
–
End the sewing process by pushing the pedal backwards.
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