Janome MC400E - Adjusting the Tension Release Mechanism; Adjusting tension release mechanism

15
MC450e
Thread tension release
adjusting plate
Adjusting the Tension Release Mechanism
When the presser foot is lowered, the thread tension will be closed and pull the thread.
When the thread tension will be released, the tension disc will be opened and release the
thread correctly.
1. Remove the front cover (refer to page 4).
2. Turn the power switch ON while pressing the start/stop
button.
Press “Foot Sensor/Tension” key.
3. Press “Free” key.
The tension disc will be opened with the presser foot
lowered.
Lower the presser foot.
4. Turn the thread tension gear until the convex part of
tension gear is not set at the tension release claw.
5. Loosen the setscrews (A) and (B).
6. Adjust the clearance between the tension release
adjusting plate and the tension disc supporter to 0.2
mm - 0.8 mm as shown in Fig. B.
  Tightenthesetscrew(A)rst,andadjustthethread
tensionreleaseadjustingplateposition,thentighten
the setscrew (B).
Be sure that the tension release lever touches to the
presser foot lifter as shown in Fig. C when tightening
the setscrew (B).
7. Turn the thread tension gear until the convex part
of tension gear is engaged with the tension release
claw. Be sure that the tension release adjusting plate
touches to the tension disc supporter and the tension
discs are opened slightly (see Fig. D and E).
Convex is NOT set at release claw
Thread tension gear
Convex part of
tension gear
Setscrew (A)
Thread tension
release adjusting
plate
Tension
release
claw
Setscrew (B)
Foot Sensor/Tension key Free key
0.2−0.8mm
Tension release lever
Presser foot lifter
The tension release
lever touches to the
presser foot lifter.
Fig. B
Fig. A
Fig. C
Convex is set at release claw
Convex part of
tension gear
Tension
release
claw
Tension disc supporter
Tension disc supporter
Thread tension release
adjusting plate
Tension disc
(closed)
Tension
disc
(opened)
Fig. D
Fig. E