Operation Manual

Adjustment
11
.04.08
Hook-to-needle
clearance,
needle
rise,
needle
height
and
needle
guard
(On
Model
1246
make
these
adjustments
on
both
sewing
hooks.)
• Set
stitch
length
,,3’
and
loosen
screws
1
and
2
(also
loosen
screws
3
on
machines
with
automatic
thread
trimmer
-900/561.
•
Move
hook
bearing
4
in
accordance
with
requirement
1.
•
Tighten
screws
1.
•
Bring
the
needle
to
its
BDC
and
slide
the
1.8
or
2
mm
thick
feeler
gauge
under
the
needle
bar
bearing,
allow
the
adjustable
clamp
to
come
to
rest
on
the
feeler
gauge
and
screw
it
tight.
•
Remove
the
feeler
gauge
and
turn
the
handwheel
in
its
direction
of
rotation
until
the
Requirement
With
the
stitch
length
set
at
,,3’
and
the
needle
rise
at
(1.8mm
after
BDC
of
the
needle
bar
on
model
,,B’
and
2.0mm
after
BDC
of
the
needle
bar
on
model
C),
the
following
must
be
true:
1.
The
distance
to
the
needle
must
be
0.05
-
0.1
mm
and
the hook
point
must
be
pointing
to
the
middle
of
the
needle.
2.
The
top
edge
of
the
eye
of
the
needle
must
be
0.8
-
1
mm
below
the
hook
point.
3.
The
needle
guard
must
lightly
touch
the
needle.
4
1
‘FAFF
11
-
9