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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