Janome MC9900 - Clearance Between Needle and Tip of the Rotary Hook

14
⇒
Mechanical adjustment
Clearance between needle and tip of the rotary hook
The clearance between the needle and the point of hook should be -0.1 to +0.05 mm.
1. Remove the top cover (see page 2).
2. Remove the presser foot pressure dial, presser foot,
the needle plate and the bobbin holder. (see page 4
and 5)
* Cover the needle plate with the fabric to prevent
damaging the needle plate when removing.
3. Attach the master needle (see fig.1).
4. Turn the power switch ON while pressing start/stop
button and reverse stitch button to enter the factory
setting mode. Press "Bobbin" key.
The stitch width will be set at 9.0.
5. Turn the handwheel toward you. Adjust the clearance
between the needle and the tip of the rotary hook, by
moving the needle bar supporter in the direction
of arrow (see fig.3).
6. Check the clearances A and B between the needle
and the edge of needle plate hole (see fig. 4).
If the clearances are not even, follow the procedure in
the next page.
Adjustment 1
Master needle
Tip of hook
-0.1 to +0.05
mm
Left needle
position
Right needle
position
Needle plate hole
Setscrew
Needle bar
supporter
Center
Reverse
stitch button
Start/stop
button
Needle bar
Needle bar supporter
Presser foot pressure
adjusting dial
Clearances must be even
A
B
Fig. 1 Fig. 2
Fig. 3
Fig. 4