Adjusting The Needle Bar Height; Adjusting The Needle Bar Lift Amount; Adjusting The Needle Contact Pressure Of The Driver - Brother BAS-300G Instruction Manual

10. STANDARD ADJUSTMENTS

10-4. Adjusting the needle bar height

2552Q
Turn the pulley in the direction of the arrow to move the needle bar to the lowest position. Then remove the rubber plug (2),
loosen the screw (3) 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 (1).
* If using a DP X 5 needle, use the highest reference line (reference line a).

10-5. Adjusting the needle bar lift amount

2554Q
Turn the pulley in the direction of the arrow to raise the needle bar from the lowest position until the lowest reference line on
the needle bar (reference line B) is aligned with the lower edge of the needle bar bush (1), and then loosen the bolt (2) and
move the driver (3) so that the tip of the rotary hook is aligned with the center of the needle.
* If using a DP X 5 needle, use the second reference line from the top of the needle bar (reference line b).

10-6. Adjusting the needle contact pressure of the driver

Needle center
Rotary hook tip
0135Q
Turn the pulley in the direction of the arrow to align the tip of the rotary hook with the center of the needle, and then loosen
the set screw (2) and turn the eccentric shaft (3) to adjust so that the driver (1) is touching the needle.
NOTE:
If the driver (1) crosses the needle more than necessary, it will place a load on the needle, or it may cause poor thread
tension. Furthermore, if it does not cross the needle at all, the tip of the rotary hook will interfere with the needle and
skipped stitches may occur.
57
Needle center
Rotary hook tip
0135Q
2980B
BAS-300G, BAS-311G, BAS-326G
2266B
4993Q
5227Q