Zigzag Mechanism; Adjustment Of Needle In Needle Hole - Pfaff expression 2014 Service Manual

Zigzag mechanism

9. Adjustment of needle in needle hole

Requirement:
At the straight stitch setting, the needle must be in the center of the needle hole (fig. 26).
The widest zigzag stitches must be the same distance from the left and right needle hole edges (fig 27.).
Check:
Remove the presser foot.
Insert a new needle.
Select stitch pattern "01" for straight stitch.
Turn the handwheel until the needle is in the needle hole.
Carry out a visual check (fig. 26).
Select stitch program "03" and a zigzag width of 6 mm.
Turn the handwheel and check the left and right distance (fig. 27).
Adjustment:
Select stitch pattern "01" for straight stitch.
Loosen both screws 45 just a little (fig. 28).
Push the complete stepping motor 46 to the left or to the right until the needle is centered (fig. 26).
Tighten both screws 45.
Cross-check:
Carry out as described under "Check".
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