Thread Tension; Lower Thread Tension; Upper Thread Tension - Brother BAS-300G-484/484SF Instruction Manual

4-7. Thread tension

[Thread tension reference]
Upper thread
Lower thread
Upper thread tension (N)
Lower thread tension (N)
Pre-tension (N)
Needle
Normal sewing speed

4-7-1. Lower thread tension

Weaker

4-7-2. Upper thread tension

#4 or similar
#4 or similar
3.0 − 3.5
1.2 − 1.5
0.3 − 0.6
DP x 17 #25
1,300 sti/min
Stronger
3185Q
Stronger
Weaker
Stronger
Weaker
4666M
BAS-300G-484, BAS-300G-484 SF
4. PREPARATION BEFORE SEWING
Adjust the lower thread tension by turning the adjusting
screw (1).
1. Turn the tension nut (1) (main tension) to adjust the
tension as appropriate for the material being sewn.
2. Use the tension nut (2) (sub tension) to adjust the upper
thread trailing length to about 45 mm.
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