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8. Setting the movement of the feed dog stroke and the upper blade
Requirement:
The movement of the feed dog stroke and the upper blade must be synchronized (fig. 12).
Note:
Before any adjustments can be made, the needle bar height and the feed dog height must be set
correctly.
Check:
● Insert a new needle system ELx705 in “R1”.
● Turn the handwheel in the normal direction until the needle bar is at its highest position.
● The upper blade should also be at its highest operating position.
● Carry out a visual check.
Setting:
● Turn the handwheel in the normal direction until the needle eye is positioned in accordance with fig.
13.
● Loosen the fastening screws 16 on the stroke eccentric (fig. 14).
● Turn the stroke eccentric until the markings “A” and “B” are aligned.
● Tighten the fastening screws 16 on the stroke eccentric.
Test:
● Carry out a visual check.
● Turn the handwheel in the normal direction and check that the machine runs freely.
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