Fixed Needle Guard Position Adjustment - Brother SB3734T Service Manual

Adjustment
1. Turn the pulley counterclockwise rotation, and
then set the needle at the position of the figure.
Needle
Needle plate
2. Loosen the screw (screw, bind M2x4) for the
fixed needle guard.
Screw, bind M2x4

Fixed needle guard position adjustment

Pulley
Needle (left)
Lower
looper
Contact to
the end face
Lower looper
Movable
needle guard
UL lever
Needle plate
Fixed needle guard
3 - 9
3. Move the fixed needle guard, and then adjust the
gap of the needle to 0 to 0.05 mm.
Needle (left)
Fixed needle
guard
Fixed needle
guard
0 to 0.05 mm
4. Fasten the screw (screw, bind M2x4) for the
fixed needle guard.
Screw, bind M2x4
Needle plate
Needle
(left)
Lower
looper
Movable
needle guard
Needle plate
Fixed needle guard