Thread Presser Base Up/Down Position - Brother PR655 Service Manual

Adjustment
[Standard]
The clearance between the thread presser base upper assy and the wiper hook should be more than 0.2 mm for all
needle positions.
[Adjustment]
1. Loosen the 4 screws 1 of the thread presser base assembly.
2. When turn off the power, lower the wiper link assy of the left side of the arm bed by hand and lower the wiper
hook.
*Key point
• If turn on the power, the wiper link assy does not lower.
3. Move the thread presser set up and down, and adjust the clearance between the thread presser base upper assy and
the wiper hook.
4. Tighten the 4 screws 1 of the thread presser base assembly to secure the needle bar case final assembly.
5. Repeat the same step 2 to adjust the clearance between the thread presser base upper assy and the wiper hook for
all needle bar position.
1
Wiper link assy
Thread
presser base
upper assy

Thread presser base up/down position

Screw, Bind
M4X6
Wiper link assy
1
Wiper hook
4 - 34
Needle bar case final assembly
Thread presser base assembly
more than 0.2 mm
Thread presser
base upper assy
Wiper hook
1