Pfaff Creative 7550, Service Manual, Page: 19 / 116

6. Adjusting the presser bar height
Requirement:
With the presser bar lifter raised there must
,pe
a
clearance of
8
mm between the needle plate and the
sole of the zigzag foot
Check:
• Raise the presser bar litter.
• RI the zigzag sewing foot.
• Lower the feed dog.
•
Fully raise the presser bar lifter and hold it ir11 this positlon.
e
Insert sewing foot gauge No. 63-114690-39 from behind under the zigzag foot and into the cutouts
of the needle plate (fig. 6).
• Lower the presser bar litter to
Its
normal position again. The zigzag foot must rest parallel and
without play on the sewing foot gauge. However. the sewing foot gauge must not
lift
the zigzag foot.
and the needle thread tension release must
be
without play (fig. 6 a )
.
Adjustment:
• Loosen the three screws 183, 184 and 188.
• Turn the zlgzag foot with the presser bar litter raised until it is parallel with the sides of the sewing
foot gauge.
• Use a screwdriver to press presser bar guide 185 firmly downward.
•
At the same time firmly tighten screw 184.
Check:
• Press the presser bar litter further upward and release it again.
The zigzag foot must rest parallel and without play on the sewing foot gauge.
Needle thread tension release
181
must be without play. The presser bar litter must be in
its
raised
positlon.
Note:
• The
two screws
183 and 188 are not tightened until later when the top feed height is set
Fig.
e
18