Cutting Pressure And Cutting Movement Of The Underthread And Gimp Trimmer - Duerkopp Adler 558 Service Instructions Manual

42.2 Cutting Rressure and Cutting Movement of the Underthread and Gimp Trimmer
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The cutting pressure may only be set as strong as is necessary for a
sure cutting of the threads.
At the reversing point the blade of the fixed knife 5 must lie about 1 to
2 mm over the blade of the movable knife 4. At the reversing point the
movable knife 4 has reached its farthest swing to the left.
In this position it must still be possible to manually move the movable
knife 4 in the cutting direction. A little play must be felt.
Caution Risk of Injury !
Pull the mains plug before adjusting.
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Bring the machine into its end position.
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Remove the right clamping plate.
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Screw out screws 2 and 3.
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Remove the cover plate 6.
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Loosen the yellow-marked screw 7.
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Manually swing the movable knife 4 to the left.
Hold the knife in this position.
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Bring the fixed knife 5 to touching through light pressure on the
movable knife 4.
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Tighten the yellow-marked screw 7.
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Conduct a manual cutting trial with thread.
If the blades are not parallel to each other align the knife lever 1
slightly.
Do not loosen the yellow-marked screw 7 again thereafter.
ATTENTION !
Do not with too great a cutting pressure.
If necessary align the knife lever 1 slightly or regrind blunt cutting
knives (see chapter 43 ).
Continued on the next page !
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