Brother BAS-342G - Standard Thread Tension

7. ADJUSTMENT
86
BAS-342G
7-2. Standard thread tension
Upper thread #20 or similar
Lower thread #20 or similar
Upper thread tension (N)
1.4 − 1.8
Lower thread tension (N)
0.3 − 0.4
Thread take-up spring height
(mm)
7 − 10
Thread take-up spring
tension (N)
0.6 − 1.2
Pre-tension (N)
0.2 − 0.4
Needle DP x 17 #19
7-2-1. Upper and lower thread tension
1378B
1377B