7-2-2. Thread take-up spring; 7-2-3. Arm thread guide R; 7-2-2. Thread take-up spring - Page 97

7. ADJUSTMENT 

BAS-311G, BAS-326G 

90

7-2-2. Thread take-up spring 

<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. 

7-2-3. Arm thread guide R 

The standard position of arm thread guide R (1) is when the 
screw (2) is aligned with the index mark. 
Loosen the screw (2) and move arm thread guide R (1) to 
adjust. 

* When sewing heavy material, move arm thread guide R 

(1) to the left. (The thread take-up amount will become 
greater.) 

* When sewing light material, move arm thread guide R (1) 

to the right. (The thread take-up amount will become less.) 

5022Q

Lower 

Higher 

Weaker 

Stronger

5030Q

More thread 

Less thread

Index mark

5023Q

 4664Q