6-8. Upper shaft mechanism; 6-8. Upper shaft mechanism ; 6. ASSEMBLY- Page 82

6. ASSEMBLY

BAS-311G, BAS-326G

75

6-8. Upper shaft mechanism 

1. Upper shaft 

2. Pulley gear R 

3. Bobbin winder driving wheel

4. Stepping clamp cam assy 

5. Thread take-up crank 

6. Screw 

7. Set screw 

8. Set screws [2 pcs] 

9. Set screws [2 pcs] 

10. Rubber cap 

11. Set screws [2 pcs] 

12. Joint assy 

13. Set screws [2 pcs] 

5140Q

Apply adhesive (Threebond 1324 or similar) to the

outside of the bearing of joint assy. 

1

）

 Tighten the screw of the thread take-up crank so that

it is aligned with the upper shaft hole. 

2

）

 While pressing the thread take-up crank so that there

is no play in it, tighten the two set screws (8). 

Apply adhesive (Threebond 1401 or similar) to the thread

section of the screw. 

 Install the bobbin winder driving

wheel so that it is in phase with the

thread take-up crank and aligned

with the reference line on the upper

shaft. 

5204Q

Reference line