Janome MC9900 - Mechanical Adjustment; Feed Dog Height

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Mechanical adjustment
Feed dog height
When the foot pressure dial is at “5” and the presser foot A is lowered, the highest position of the feed dog should be 0.80
to 0.90 mm from the surface of the needle plate.
Presser foot
Feed dog
0.85±0.05 mm
Surface of
needle plate
Reverse
stitch button
Start/stop
button
Setscrew A
Nut
Adjusting screw
Setscrew B
Threaded hole
Hexagonal socket screw 4x6
Adjustment 1:
1. Attach the presser foot A. Remove the bed cover (see
page 4).
2. Turn the power switch on while pressing start/stop
button to enter the factory setting mode.
Press “Foot Sen/Feed Dog” key.
The stitch length will be set at “5.0”.
3. Set the pressure adjusting dial at “5” with the presser
foot lowered.
Turn the handwheel toward you to raise the feed dog
at its highest position.
4. Loosen the setscrew A.
5. Loosen the nut.
Adjust the feed dog height to 0.85 mm by turning the
adjusting screw.
6. Tighten the nut and setscrew A.
7. Attach the bed cover.
8. Check if the feed dog is parallel to the surface of the
needle plate at its highest position.
If not, make the adjustment as follows:
Adjustment 2:
If the feed dog is not parallel to the surface of the needle
plate at its highest position, make the adjustment as
follows:
* For this adjustment, a hexagonal socket screw 4x6, part
no. 000111108 is required.
1. Remove the bed cover
Insert a hexagonal socket screw I, part no. 000111108
into the threaded hole until it stops.
2. Turn the setscrew B clockwise to loosen it.
3. Turn the hexagonal socket screw 4x6 until the feed
dog is parallel with the surface of the needle plate.
4. Tighten the setscrew B.
5. Remove the hexagonal socket screw 4x6.
6. Check the feed dog height again.