Janome AirThread 2000D Professional - Needle Guard Clearance (front); Front Needle Guard Clearance Spec; Install and Adjust Front Needle Guard

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Needle Guard Clearance (front)
 The clearance between the needles and front
needle guard should between 0-0.05mm.
 Install the front needle guard, move it closer or away from the
needles to obtain the correct clearance. Hold the front needle
guard in position and tighten the 2 screws. Be sure the guard is
not positioned too high, otherwise the chaining finger will not
work.
0 - 0.05mm