Brother BAS-311G Adjusting the needle bar height, Adjusting the needle bar lift amount

7. ADJUSTMENT

7-3. Adjusting the needle bar height

2552Q 4992Q

Turn the machine pulley 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).

7-4. Adjusting the needle bar lift amount

Needle center

Rotary hook tip

2554Q 0135Q 4993Q

Turn the machine pulley 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).

7-5. Adjusting the driver needle guard

Needle center

Rotary hook tip

0135Q 2555Q 5227Q

Turn the machine pulley 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 needle guard (1) is touching the needle.

NOTE:

If it 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.

BAS-311G, BAS-326G 91