40
PFM-4000
Part Number 6Z8303
Sewing Adjustments
4
With the push button pressed inward, turn the handwheel to the desired
aligning mark. For a longer stitch, turn the handwheel clockwise. For a
shorter stitch, turn the handwheel counterclockwise.
5
After the desired stitch length is set, release the push button.
6
Return the cloth plate to the proper sewing position.
Figure 6.8
Setting stitch length
Making Tension Adjustments
To produce precision stitching, pressure on the material should be as light as
possible while still sufficient to ensure correct feeding. Tension on the thread
should also be as light as possible while still sufficient to set the stitch correctly in
the material and ensure an even stitch.
Adjusting Thread Tensioners
Tension Disc
A metal
disc specifically designed
to apply tension to thread.
Tensioners assist in controlling stitch tension. The PFM-4000 Flange Machine
uses
tension springs and tension discs, similar to a home sewing machine. Three
tensioners are located on the front of the sewing head. Inside the cloth plate on the
left side of the machine, you will find a thumb screw tensioner attached to the
machine casting.
IMPORTANT!
Numbers on the handwheel are reference points only. They
do not indicate stitches per inch. Higher numbers indicate
longer stitches, and lower numbers indicate shorter
stitches. The factory typically sets the stitch at number 7 for
a longer stitch.
