Adjusting The Height Of The Needle Bar - Brother RH-9820 Service Manual

7-6. Adjusting the height of the needle bar

The standard height for the needle bar is 2.5 mm. (It may be preferable to change this depending on the material and thread.)
0328B
1. Remove the face plate.
2. Turn the upper shaft pulley until the tip of the eye looper (1) is aligned with the top edge of the needle hole in the needle
center (2) when the needle is at the inside sewing position.
3. Loosen the two screws (4) of the top and bottom needle bar clamps (3).
4. Lower the needle bar (5) 2.5 mm from the position where the tip of the eye looper (1) is aligned with the top edge of the
needle hole.
5. In order to make the needle bar turn smoothly, adjust so that there is no play in the needle bar, but so that there is enough of
a gap between the needle bar clamps (3) and the needle bar feed rock link (6) for oil to get into.
6. Once adjustment is complete, securely tighten the two screws (4) and install the face plate.
0450B
RH-9820
7. ADJUSTMENTS
0497B
0496B
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