Needle Guard (Front) (2) - Janome AirThread 2000D Service Manual

To adjust the clearance of the needle and the lower looper; and the clearance
of the needle and the needle guard (front) (2). To replace the needle guard (front).
The standard clearance between the groove of the needle (HAx1 SP #14) and the tip of the lower looper is 0 to 0.05
mm when the needle and the lower looper intersect.
Setscrew B
Mechanical Adjustment
Setscrew A
Needle bar
lower bushing
Thumbscrew
Needle
bar
Needle bar gauge
12. Check if the clearance between the rear groove of the
left needle and the tip of the lower looper is 0 to 0.05
mm when the needle anTd the lower looper intersect.
13. If the clearance is not correct, leaving the timing left
as is, remove the face plate and the front cover; and
adjust as follows.
14. Place the needle bar gauge on the needle bar . Pull
the needle bar gauge up against the lower surface
of the needle bar lower bushing and tighten the
thumbscrew slightly.
NOTE:
Do not tighten the thumbscrew too much. Otherwise, the
surface fo the needle bar may be damaged.
15. Loosen the setscrew A. Hold the thumbscrew to
prevent the needle bar goes down and adjust the
clearance by turning the needle bar.
16. Tighten the setscrew A.
17. Attach HAx1 SP #14 needles as the left and right
needles.
18. After adjustment, check the timing of the needle and
the lower looper, the timing of the upper looper and
the lower looper and the clearance between the upper
looper and the lower looper (Refer to pages 24, 27
and 28).
To adjust the clearance of the needle and needle
guard (front)
1. Turn the handwheel toward you until the tip of the
lower looper comes from the left to the rear groove of
the needle. Loosen the setscrews B (2 pcs.) and push
the needle guard (front) against the needle slightly so
that the clearance between the rear groove of the left
or right needle and lower looper is 0 to 0.05 mm.
2. Tighten the setscrews B (2 pcs.).
3. Turn the handwheel toward you to check the
clearance again.
To replace the needle guard (front):
1. Remove the setscrew B (2 pcs.).
2. Set the upper knife to the lowest position by turning
the handwheel toward you.
Pulling the feed base upward, remove the needle
guard (front).
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MODEL: AirThread 2000D