f.
Incorrect
thread
tension
and
how
to
adjust
1.
The
sketch
shows
the
left
needle
thread
tension
is
too
loose.
2.
The
sketch
shows
the
right
needle
thread
tension
is
too
loose.
3.
The
sketch
shows
the
right
looper
thread
tension
is
too
loose.
4.
The
sketch
shows
the
left
looper
thread
tension
is
too
loose.
11
