Needle Bar Height; Lower Shaft - Brother PC6000 Service Manual

5.

NEEDLE BAR HEIGHT

STANDARD
When test mode "5" is selected, turn the balance wheel so that the needle meets the rotary hook point. At this time,
the clearance between the upper end of the needle eye and the bottom of the rotary hook point should be 1.0-1.4
mm.
ADJUSTMENT
1. Select test mode "5".
2. Turn the balance wheel so that the needle meets the rotary hook point.
3. Loosen the screw of the needle bar block assembly.
4. Move the needle bar vertically to adjust the clearance to between 1.0-1.4 mm.
5. Tighten the screw of the needle bar block assembly.
NOTE: The needle clamp should be parallel to the side of the needle plate. If the needle bar is loose when you adjust the
needle bar height, it may result in sewing troubles.
6.

LOWER SHAFT

1. Attach the bushing presser L temporarily so as the center of lower shaft is positioned higher by 1 mm against the
center of eccentric metal.
2. Install the outer rotary hook, then turn the eccentric metal and make sure that there is no backlash on the gears.
3. Tighten the screw on the bushing presser L.
-20-