Thread Take-Up Spring Height; Thread Take-Up Spring Tension; Adjusting Arm Thread Guide R; Thread Take-Up Amount - Brother LK3-B448E Instruction Manual

7. Correct use

7-6-3 . Thread take-up spring height

Loosen the set screw q and turn the tensioner body to
adjust the thread take-up spring height.

7-6-5. Adjusting arm thread guide R

Become
greater

7-6-6. Thread take-up amount

w
Become less
Become greater
q
32
Lower
Higher
q
A
Become less
q
w
e
LK3-B448E MARK

7-6-4. Thread take-up spring tension

Turn the tension stud q with a screwdriver.
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.)
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.
II /BA-16
Stronger
q
Weaker