Operation Manual

‘ing
prob’ems
and
solutions
se
machines
have
been
developed
for
easy
operation,
and
there
are no
difficult
adjustments
to
iiade.
Sewing
problems
of
the
kind
described
below
may
occur
due
to
minor
adjustment-
and
ration
errors.
They
can
easily
be
corrected
by
following
the
instructions
below.
Problem
Cause
Solution
Material
is
not
fed
Sewing
foot
pressure
too
Turn
foot
pressure
regulating
dial
correctly
weak
clockwise
to
increase
pressure.
Needle
breakage
Needle
bent
Insert
new
needle.
or
point
damaged.
Needle
not
fully
inserted.
Insert
new
needle
correctly
(see
pages
8
and 35).
Material
pulled.
Do
not
pull
material
during
sewing.
Thread
breakage
Incorrectly
threaded.
Thread
correctly
(see
pages
7—12).
Thread
has
caught.
Check
whether
thread
catches
at
the reel
stand,
etc.
Thread
tension
too
tight.
Regulate
tension.
(pages
14,
20,
21, 22).
Needle
not
fully
inserted.
Insert
needle
correctly
(page
35).
Incorrect
needle
used.
Use
needle
system
130/705
H
or
lSx
1
H.
Skipped
stitches
Needle
bent
or
point
Insert
new needle.
damaged.
Needle
not
fully
inserted.
Insert
needle
correctly
(page
35).
Incorrect
needle
used.
Use
needle
system
130/705
H
or
15x
1
H.
Incorrectly
threaded.
Thread
correctly
(pages
7—il).
Sewing
foot
pressure
too
Increase
sewing
foot
pressure.
weak.
Incorrect
stitch
trect
setting
of
threadj
Set
thread
tensions
correctly
formation
tensions.
(pages
14, 20,
21,
22).
Puckered
seams
Thread
tension
too
tight.
Reduce
thread
tension
(espe
cially
for
light
materials)
(pages
14,
20,
21,
22).
Incorrect
setting
of
Re-adjust
differential
feed.
differential
feed.
Thread
has
caught
due
to
Thread
correctly
(pages
7—12).
incorrect
threading.
I