Over Looper Timing Adjustment - Brother SB3734T Service Manual

Adjustment
1. Loosen the screw (set screw, socket (CP) M4x4)
for the OL eccentricity.
OL eccentricity
2. Turn the pulley, and then adjust the gap of the tip
of the over looper and the tip of the lower looper
to 6.5 to 7.0 mm.
Lower looper
6.5 to 7.0 mm
Lower looper

Over looper timing adjustment

Set screw, socket
(CP) M4x4
Pulley
Over looper
Over
looper
3 - 11
3. Fasten the adjusting screw (set screw, socket
(CP) M4x4) for the OL eccentricity.
Set screw, socket
(CP) M4x4
OL eccentricity