10. STANDARD ADJUSTMENTS
BAS-300G-484, BAS-300G-484 SF
55
10-3. Thread take-up spring
Thread take-up spring
height (mm)
4
−
7
Thread take-up spring
tension (N)
1.0
−
1.2
<Thread take-up spring height>
Loosen the set screw (1) and turn the adjuster to adjust.
<Thread take-up spring tension>
Turn the tension stud (2) with a screwdriver to adjust the
tension.
NOTE:
If the thread tension spring is not adjusted correctly, the upper thread trailing length will be uneven after thread trimming.
10-4. Adjusting the needle bar height
Turn the pulley (1) by hand in the direction of the arrow to move the needle bar to the lowest position. Then remove the
rubber plug (3), loosen the screw (4) and then move the needle bar up or down to adjust so that the second reference line
from the bottom of the needle bar (reference line A) is aligned with the lower edge of the needle bar bush (2).
Lower
Higher
Weaker
Stronger
4682M
4683M
4667M
4684M
