Needle Thread Tension - Janome NH40 Service Manual

NEEDLE THREAD TENSION

The top tension should be between 75 and 90g when pulling the thread up in the direction of "C".
* Use polyester sewing thread #50 (White).
* If it is not within the above limit, adjust as follows.
1. Set the tension dial at "4".
2. Lower the presser foot.
3. Remove the front cover (see page 7).
4. Pull the spring (D) away from the lead screw.
If the top tension is too loose, turn the lead screw (E) in the direction "A".
If the top tension is too tight, turn the lead screw (E) in the direction "B".
MECHANICAL ADJUSTMENT
Pull this way
C
Thread (polyester sewing
thread (#50 white))
17
A
(E)
B
(D)