To Adjust The Needle Threader - Janome AirThread 2000D Service Manual

To adjust the looper threader (air) (2)
When threading the upper looper or the lower looper with a standard thread #60, the thread of 30 mm or longer should
come out from the hole of the looper.
Threading hole
Slide pipe
Looper
Setscrews C
threading wire
Looper threader (air) (unit)
Setscrew D
Mechanical Adjustment
Looper
threading wire
Cover
detecting base
Setscrew D
Setscrew D
[Lower looper]
・ Loosen the setscrews B (2 pcs.) of the lower looper
connecting pipe supporter slightly.
Adjust the position of the upper looper connecting pipe
supporter to the opposition direction to which the slide pipe
moves at engagement.
・ Tighten the setscrews B (2 pcs.).
・ Thread the lower looper with the looper threader and check
the length of the thread coming out from the hole of the
lower looper tip.
7. Case (b) on the previous page
7-1 There can be lint or objects stuck in the pipe of the
looper.
Insert the looper threading wire into the mouth of the
looper connecting pipe to the tip of the looper to clean
the pipe. (Refer to page 53 in the instruction manual.)
7-2 Repeat the procedure from step 2.
7-3 If the problem is not solved yet, the looper threader
device (air) (unit) may be defective. Replace the
looper threader device (air) (unit).
7-4 To replace the looper threader device (air) (unit)
NOTE:
Set the looper threader switch lever is set to "SEWING"
(the slide pipe is disengaged from the looper connecting
pipe and set the upper looper to the lowest position for
attaching or removing the looper threader device (air).
・ Set the looper threader switch lever to "SEWING"
position.
・ Remove the front cover.
・ Remove the setscrews C (2 pcs.). Separate the cover
detecting base (unit) from the threader base (it cannot
be completely removed).
・ Remove the setscrews D (3 pcs.) and remove the
looper thrader device (air) (unit).
・ Placing the lower edge of the new looper thrader
device (air) (unit) behind the cover detecting base
(unit), fix it on the arm by tightening the setscrews D (3
pcs.).
・ Attach the cover detecting base (unit) and tighten the
setscrews C (2 pcs.).
・ Check and adjust the position of the slide pipe and
the looper connecting pipe (refer to the instructions of
"* To adjust:" in the clause 6.
8. Attach the front cover. (Attach the other exterior
parts.)
9. Close the looper cover.
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MODEL: AirThread 2000D