4. Setting the feed dog movement
Method:
When the rising needle leaves the fabric, the feed dog moves up above the needle plate.
The raised feed dog pushes the fabric to the rear.
After completing the feed movement the feed dog drops down below the needle plate surface and the
needle penetrates the fabric.
The feed dog returns to its starting position underneath the needle plate.
Requirement:
When the descending needle point of the needle “C” is aligned with the surface of the needle plate,
the feed dog must be in the position shown in fig. 7.
Check:
● Insert a new needle, system EL*705.
● Select the normal stitch length 3 and standard differential stroke.
● Turn the handwheel in the normal direction until the needle point of the needle “C” is flush with the
surface of the needle plate.
The feed dog should now also descend and be flush with the needle plate surface.
● Carry out a visual check.
Setting the lifting motion:
● Set the shortest stitch length and a standard differential stroke.
● Loosen the fastening screws 5 of the lifting eccentric 3 (figure 8) and rotate the eccentric
until the correct setting is reached as described under “Check”.
● Tighten the fastening screws 5 of the lifting eccentric.
Test:
● Carry out a visual check.
18
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