13
Mechanical Adjustment
MODEL: AirThread 2000D
To adjust the feed dog height
The highest position of the feed dog should be 0.9 to 1.1 mm from the surface of the needle plate.
To check:
1. Set the presser foot pressure dial to “N”.
2. Set the stitch length dial to “1” and the differential feed
dial to “1.0”.
3. Remove the side cover and rear cover.
4. Lower the presser foot lifter. Turn the handwheel
toward you to raise the feed dog teeth at the highest
position.
5. Push the gauge toward the feed dog teeth and check
the feed dog teeth height.
The feed dog height should be 0.9 to 1.1 mm from the
surface of the needle plate.
If not, adjust as follows;
To adjust:
1. Remove the top cover, the belt cover, the face plate
and the rear cover.
2. Loosen the setscrew.
3. If the feed dog is lower than the needle plate, turn the
adjusting screw clockwise.
If the feed dog is higher than the needle plate, turn the
adjusting screw counterclockwise.
After adjustment, tighten the setscrew.
4. Turn the handwheel toward you again and make sure
that the distance feed dog height is appropriate.
5. The main feed dog teeth and sub feed dog teeth
should be level. If not, loosen the hexagonal bolt with
a ball point hexagonel wrench and adjust the feed dog
teeth height.
6. Attach the rear cover, belt cover, face plate and the
top cover after adjustment.
Main feed dog
0.9 to 1.1 mm
Surface of needle plate
Presser foot
Feed dog
Measure just under the pin
Feed dog
1 mm
Adjusting screw
Setscrew
Sub feed dog
Hexagonal bolt (B)
Gauge
