Duerkopp Adler 869-M PREMIUM Operating Instructions Manual page 27

Operation
Operating Instructions 868-M PREMIUM - 02.0 - 01/2018
Order
Always adjust the clearance between the hook and the needle after
changing to a different needle thickness ( Service Instructions).
Disturbance
An incorrect hook distance can cause the following disturbances:
• Changing to a thinner needle:
• Missing stitches
• Thread damage
• Changing to a thicker needle:
• Damage to the hook tip
• Damage to the needle
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