Brother LK3-B438E MKII Instruction Manual page 30

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
Lower
Higher
q
A
Become less
w
e
LK3-B438E Mark II
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 Rq.
* When sewing thick material, move arm thread guide
Rq to the left. (The thread take-up amount will be-
come greater.)
* When sewing thin material, move arm thread guide
Rq to the right. (The thread take-up amount will
become less.)
q
Loosen the screw q and move the stopper (3.57 nut)
w to adjust the operating angle of the thread take-up
solenoid e.
* To reduce the thread take-up amount, move the
stopper w upward.
* To increase the thread take-up amount, move the
stopper w downward.
7. CORRECT USE
Stronger
q
Weaker
24