Needle Bar Height Adjustment - Brother PR600II Service Manual

Adjustment
1. Rotate the pulley manually to move the needle bar until the needle's right edge matches the rotating hook's tip.
2. Loosen the screw 1.
3. Adjust the needle bar height and alignment.
4. Tighten the screw 1.
5. Repeat the same steps to adjust the needle bar height for the other 5 needle bars.
*Key point
• Pressing [←] and [→] selects the other needle bars.
Clearance between top edge of rotating hook's
tip and top edge of needle hole
Alignment of needle bar and needle guard
relative to upper shaft
1
1
0 to 2°

Needle bar height adjustment

Tilt to the right (when viewed from the front)
Set Screw, Socket (CP)
SM4.37-40X4
1.8 - 2.2 mm
The clearance between the top edge of rotating hook's tip and
top edge of needle hole should be 1.8 - 2.2 mm.
Face the needle hole to the front.
1.8 - 2.2 mm
0 to 2°.
Torque
0.78 - 1.18 N-m
4 - 23