Pfaff coverlock 4872 Owner's Manual - Page 39
Securing, upper, blade, Switch, master, switch
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Securing the upper blade Switch off the master switch It is recommended to secure the movable upper blade 30 before sewing heavy fa brics. Raise the needle(s) to its highest posi tion and open the swivel plate. Tighten the screw fully using the Allen key. This screw should always be slightly loosened again af ter sewing heavy fabrics. Note: The seam width can no longer be adjusted once the upper blade is secured. *3 lb. Adjusting the stitch length You can set the desired stitch length bet ween 0.5 mm to 4.0 mm by turning the stitch length adjustment knob 50. Note: For the two-thread chainstitch, the setting should be 3.0 or higher. 35
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Securing
the
upper
blade
Switch
off
the
master
switch
It
is
recommended
to
secure
the
movable
upper
blade
30
before
sewing
heavy
fa
brics.
Raise
the
needle(s)
to
its
highest
posi
tion
and
open
the
swivel
plate.
Tighten
the
screw
fully
using
the
Allen
key.
This
screw
should
always
be
slightly
loosened
again
af
ter
sewing
heavy
fabrics.
Note:
The
seam
width
can
no
longer
be
adjusted
once
the
upper
blade
is
secured.
Adjusting
the
stitch
length
You
can
set
the desired
stitch
length
bet
ween
0.5
mm
to
4.0
mm
by
turning
the
stitch
length
adjustment
knob
50.
Note:
For
the
two-thread
chainstitch, the
setting
should
be
3.0
or
higher.
*3
lb.
35