Needle Bar Balance Position Adjustment - Brother SB3734T Service Manual

Adjustment
1. Turn the pulley counterclockwise rotation, and
then the needle bar is the highest position.
2. Loosen the two screws (set screw, socket (CP)
M4x4) for the needle bar balance.
Set screw, socket (CP) M4x4
Needle bar balance

Needle bar balance position adjustment

Pulley
Needle bar rod
3 - 4
3. Adjust the gap of the needle bar balance and the
body to 3 mm.
Presser foot lever
3 mm
4. Fasten the two screws (set screw, socket (CP)
M4x4) for the needle bar balance.
Set screw, socket (CP) M4x4
Needle bar balance
Needle
bar rod
Needle bar
balance
Needle bar rod