Pfaff 1540 User Manual
Page 58
56
29. Adjustment of needle clearance in needle slot in sewing direction
Requirement:
There must be a clearance of 0.2 mm between the rear edge of the needle shank and the rear edge of
the needle plate slot (fig. 57).
Note:
Since system 130/705 H needles increase in size at the needle front side only, the point of a size 100
needle is positioned exactly in the middle of the needle slot (as seen from front to back), while the point of
a size 80 needle is positioned slightly closer to the rear edge of the needle slot.
Check:
z
Insert a new size 100 system 130/705 H needle.
z
Press the straight stitch button.
z
Attach the zigzag foot.
z
Lower the zigzag foot.
z
Turn the handwheel until the needle is at its lowest position. The needle must now have the same
distance to the front and rear edges of the needle slot in the presser foot and in the needle plate.
Adjustment of the needle in the needle slot of the presser foot:
z
Loosen screw 104 (fig 58)
z
Move bolt 105 together with collar and needle bar frame 106 to the front or the rear until the needle is
exactly in the middle of the needle slot in the presser foot.
z
Tighten screw 104.
Cross-check:
z
Raise the needle by turning the handwheel.
z
Place a piece of paper under the presser foot and lower the presser foot.
z
Turn the handwheel until the needle has reached its lowest position.
z
The needle must now have the same clearance to the front and rear edges of the needle slot in the
presser foot.
Important:
The needle bar frame must move must move easily and without binding.
If this is not the case any binding must be removed.
Adjustment of the needle plate:
z
Turn the handwheel and raise the needle.
z
Remove the zigzag foot.
z
Turn the handwheel until the needle has reached its lowest position.
z
Turn the setting eccentric until the clearance from the front and rear edge of the needle plate slot is the
same (fig. 59).