To Adjust The Thread Tension Dials - Janome FA4 Service Manual

TO ADJUST THE THREAD TENSION DIALS

Correct setting:
Use a standard thread #50. Do not pass the thread through the top cover thread guide.
Standard tension:
Left needle: Tension dial set to 3, 25 to 35 grams-force, Tension dial set to 9, 125 grams-force or more
Right needle: Tension dial set to 3, 15 to 25 grams-force, Tension dial set to 9, 60 grams-force or more
Upper looper: Tension dial set to 3, 10 to 20 grams-force, Tension dial set to 9, 55 grams-force or more
Lower looper: Tension dial set to 3, 20 to 30 grams-force, Tension dial set to 9, 120 grams-force or more
To adjust:
1. Remove the top cover unit.
2. Adjust each thread tension with the adjusting plate A.
* If the thread tension is at stronger level, shift the adjusting plate in the direction B.
* If the thread tension is at weaker level, shift the adjusting plate in the direction C.
3. Rotate the thread tension dial while sewing to check the sewing performance.
4. Attach the top cover.
Thread tension dial
To pull the thread to this direction
Thread
27
Adjusting plate A
C
B