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26
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
4.4.2
In 2-needle machines
Fig. 7: In 2-needle machines
①
②
③
(1) - Needle bar
(2) - Screw
To change the needle in a 2-needle machine:
1.
Turn the handwheel until the needle bar (1) has reached the
upper end position.
2.
To change the right needle, loosen the right screw (2).
3.
To change the left needle, loosen the left screw (2).
4.
Pull the needle(s) downwards out of the needle holder (4).
5.
Insert new needle(s) into the corresponding hole of the needle
holder (4) until you reach the stop.
(3) - Groove
(4) - Needle holder
Operating Instructions 868-M - 01.0 - 12/2020
Operation
④
②
③
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