Janome QMP16SU Manual page 49

5. Sight through the needle eye and compare
the upper and lower levels of the eye with
the cylinder tool groove. If an adjustment
is necessary, loosen the needle bar driving
clamp slightly and raise or lower the needle
bar.
6. Reinstall the hook and set loop lift at 2.2
mm and reset needle distance. (For more
information, see Loop Lift and Needle
Distance Adjustment earlier in this section.)
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QMP16SU Service Manual