To Adjust The Pre-Tension - Janome AirThread 2000D Service Manual

To adjust the pre-tension

Use a standard thread #50 to check the tension of the looper pre-tension.
Standard tension:
Lower looper pre-tension setting slider set to "STD.": 1 gf or less.
Lower looper pre-tension setting slider set to "TIGHT": 45-55 gf.
Slit Slit
Mechanical Adjustment
To check:
1. Open the looper cover and remove the belt cover.
2. Check the tension of the lower looper pre-tension with
3. If the thread tension is not correct, adjust the tension
4. Check the thread tension again. Repeat the procedure
5. Attach the belt cover and close the looper cover.
32
the standard thread.
by inserting a screwdriver in the slit of the thread
tension shaft and turning it.
⇨ If the tension is too tight, turn the thread tension
shaft counterclockwise.
⇨ If the tension is too loose, turn the thread tension
shaft clockwise.
of step 3 until the thread tension becomes correct.
MODEL: AirThread 2000D