Brother BAS-300G-484/484SF Owner's Manual

4. PREPARATION BEFORE SEWING 

 

 

27 

KE-430D, BE-438D

Turn the tension nut (1) (main tension) to adjust the tension 

as appropriate for the material being sewn. 

Furthermore, turn the tension nut (2) (sub-tension) to adjust 

the remaining length of upper thread to 35 - 40 mm, when 

the

 

thread take-up lever is not used. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KE-430D 

Use 

Ordinary materials (-01) 

Knitted materials

(-07) 

Foundation 

garments (-0F) 

Denim (-02) 

BE-438D 

Upper thread 

#50 or equivalent 

#60 or 

equivalent 

#60 or 

equivalent 

#30 or equivalent  #60 or equivalent

Lower thread 

#60 or equivalent 

#80 or 

equivalent 

#60 or 

equivalent 

#50 or equivalent  #60 or equivalent

Upper thread tension 

(N) 

0.8 - 1.2 

1.6 - 2.0 

1.0 - 1.8 

Lower thread tension 

(N) 

0.2 - 0.3 

0.2 - 0.4 

Pre-tension (N) 

0.05 - 0.3 

0.1 - 0.4 

Needle 

DP x 5 #14 

DP x 5 #9 

DP x 17NY #19 

DP x 17NY #12 

 

 

Max. sewing speed (rpm) 

Use 

Standard hook 

Large hook 

8 layers of denim 

3,200 

2,500 

12 layers of denim 

2,700 

 

Ordinary materials 

2,700 

2,500 

Knitted materials 

Foundation garments 

2,500  

The thread may break due to heat under some sewing conditions. 

If this happens, reduce the sewing speed, or use the liquid cooling tank. 

 

 4434Q 

 Weaker 

Stronger 

 Weaker 

Stronger