32
LK3-B448E MARKII/BA-16
7. Correct use
Become
greater
Become less
q
w
w
q
e
q
Weaker
Stronger
7-6-4. Thread take-up spring tension
Loosen the set screw
q
and turn the tensioner body to
adjust the thread take-up spring height.
Turn the tension stud
q
with a screwdriver.
7-6-5. Adjusting arm thread guide R
The standard position of arm thread guide R
q
is when
the screw
w
is aligned with mark A.
To adjust the position, loosen the screw
w
and then move
arm thread guide R
q
.
* When sewing thick material, move arm thread guide R
q
to the left. (The thread take-up amount will become
greater.)
* When sewing thin material, move arm thread guide R
q
to the right. (The thread take-up amount will become
less.)
7-6-6. Thread take-up amount
Loosen the screw
q
and move the stopper (3.57 nut)
w
to adjust the operating angle of the thread take-up sole-
noid
e
.
* To reduce the thread take-up amount, move the stop-
per
w
upward.
* To increase the thread take-up amount, move the stop-
per
w
downward.
Become greater
q
Lower
Higher
A
7-6-3 . Thread take-up spring height
Become less
