Janome AirThread 2000D Professional Service Bulletin page 37

Adjusting Sub(Front) Feed Dogs
If an adjustment is needed, loosen the 2.0mm screw then using a
2.0mm hexagon wrench, turn the
Adjusting Main(Rear) Feed Dogs

clockwise to raise the feed dog or counterclockwise to lower the
feed dog . Tighten the 2.0mm screw.
Remove the needle plate. Locate the 3.0mm hexagon screw. If an
adjustment is needed, loosen the screw then raise or lower the feed

dog as needed. Tighten the 3.0mm hexagon screw.
2.0mm screw
2.0mm adjusting screw
2.0mm adjusting screw
37