Needle Bar Height Adjustment - Brother PR600 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
1.8 - 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.

Needle bar height adjustment

Tilt to the right (when viewed from the front)
Set Screw, Socket (CP)
SM4.37-40X4
Color; Black
1.8 - 2.2 mm
0 to 2°.
Torque
0.78 - 1.18 N-m
1
0 to 2°
4 - 21