White 1634 - Changing Thread (Tying On); Built-in Pocket Handle

It
is
necessary
to
adjust
the
thread
tension
for
the
seams
shown
below.
[ADJUSTING
THE
NEEDLE
THREAD
TENSIONS]
[
The
left
needle
thread
tension
is
too
loose.
The
right
needle
thread
tension
is
too
loose.
ADJUSTING
THE
LOOPER
THREAD
TENSIONS
J
The
lower
looper
thread
is
tight
and/or
The
upper
looper
thread
is
tight
and/or
the
upper
looper
thread
is
loose,
the
lower
looper
thread
is
loose.
Loosen
the
lower
looper
thread
tension
Loosen
the
upper
looper
thread
tension
and/or
tighten
the
upper
looper
thread
and/or
tighten
the
lower
looper
thread
tension,
tension.
Tighten
the
left
needle
thread
tension.
Tighten
the
right
needle
thread
tension.
14.-