Brother PR655 Service Manual page 230

Adjustment
6. Loosen the screw 3 of the case positioning plate on the lower section of the needle bar case unit.
7. Move the case positioning plate to either the front or back to adjust the needle front/back position.
8. Tighten the screw 3 of the case positioning plate on the lower section of the needle bar case unit to secure the
case positioning plate.
3
3
with hex wrench
4 mm
Case positioning plate
9. Check the front/back (needle drop) for all other needle bars using these same steps.
10. Attach the 4 screws 2 to secure the thread presser base assembly.
*Key point
• When securing the thread presser base assembly, make adjustments following the guidelines in section "4-
34 Thread presser base up/down position".
11. Attach the 4 screws 1 to secure the LED unit right assy and the LED unit left assy.
1
2
1
1
LED unit right assy
Needle drop (front/back)
Bolt, Socket
M5X16
Needle bar case unit
more than
Screw, Bind
M4X8
Screw, Bind
M4X6
1
1
LED unit left assy
4 - 18
0.3 mm
Needle plate
2
Thread presser base assembly
Needle tip
more than
0.3 mm
2