The
Zigzag Regulator
Mechanism
The
zigzag
regulator
mechanism (Fig.
101)
embraces
the stitch width regulating
mechanism
in
the
machine
arm
and
the
stitch width control
on
the
outside
of
the machine arm.
The stitch width control comprises
stitch width dial
A,
zigzag
finger-tip control
F,
and
needle
position lever
B.
Before you strip
the
stitch width control, it is
advisable
to
make
on
inconspi-
cuous mark
on
the machine
arm
opposite
the
red mark
on
the
zigzag
regulator
barreL
Stripping the Automatic Mechanism
If
the
machine
is
equipped
with
on
automatic
embroidery mechanism, this must
be
stripped
before
the
zigzag
regulator
mechanism
can
be
removed from the
machine. To
do
this,
proceed
as
follows:
Disconnect tension spring m (Fig.
51)
from
the
zigzag
regulator
arm
(1
06178),
and
unscrew pressure spring assembly o. Toke
out
the screws
in
the
bose,
and
lift the
automatic
embroidery mechanism out, without applying force. Turn
stitch width
dial
A
to
"4",
and
loosen the
set
screws
on
the
three
engaging
lever eccentric studs. Pull
out
the eccentric stud
of
rear
engaging
lever d
l.
Set
stitch width
dial
A
on
"0",
and
strip
engaging
levers d 2
and
d
3.
To
replace
the
automatic
embroidery mechanism, simply
proceed
in
reversed
sequence
(see
also
page
71
).
Dismantling the
Stitch
Width Control
Turn stitch width
dial
A
to
"0";
set
needle
position lever
Bat
its
central
position;
turn
out
the
set
screw (b
in
Fig. 102)
on
the zigzag
regulator
barrel
which con
be
reached from
above;
push up finger-tip control
F;
shove the stitch width regulating mechanism
in
the
arm
to
the
left;
turn the barrel slightly
to
the right,
and
pull it
out
cautiously, without applying
force.
If
desired, tool No. 106300-303 con
be
supplied by Pfaff
at
extra
cost.
This
tool serves
to
facilitate
the
turning
and
removing
of
the barreL
The
Stitch
Width Regulating Mechanism
in
the
Machine
Arm
The stitch width regulating mechanism
in
the
machine
arm
essentially com-
prises the following components:
Zigzag
regulator
arm
14 (Fig.
103)
with
zigzag
regulator
stud
12,
zigzag
regu-
lator
crank
15
with connecting rod,
and
hinge stud (106179).
64
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