Brother BAS-311G service manual Lower shaft mechanism, Assembly

6. ASSEMBLY

6-11. Lower shaft mechanism

Tighten the set screw until the head of the screw is flush with the edge of the bed. (Refer to “7-8. Rotary hook lubrication amount”.)

1.Shuttle race base assy

2.Set screw

3.Set screw

4.Adjusting stud

5144Q

Adjust while referring to “7-19. Adjusting the backlash of the lower shaft gear”.

While turning the machine pulley, move the rock gear back and forth to the position where it turns smoothly.

Place set screw collar R against the edge of the bed and tighten the set screw.

5145Q

5.Rock gear shaft

(Insert from the rear of the machine head)

6.Rock gear

7.Set screw collar, B

8.Set screws [2 pcs]

9.Set screw collar, R

10.Set screw (Temporarily tighten)

11.Set screws [2 pcs] (Temporarily tighten)

BAS-311G, BAS-326G 81