Feed Dog Height Adjustment (2) - Brother SB3734T Service Manual

Adjustment
1. Turn the differential dial to [1], and then turn the
feed adjusting dial to [3].
2. Remove the feed spring.
3. Turn the pulley counterclockwise rotation, and
then the needle bar is the highest position.
4. Loosen the screw (set screw, socket (CP) M4x4)
for the upper knife adjusting shaft.

Feed dog height adjustment (2)

Feed adjusting dial
Differential dial
Feed spring
Pulley
Upper knife
adjusting shaft
Set screw, socket (CP)
M4x4
3 - 14
[When did not operate disassembly,
assembly, and exchange]
5. Set the gauge at the position of the figure, and
then turn the upper knife adjusting shaft, and
then adjust the differential feed dog to the
position of contacting with the gauge.
Upper knife adjusting shaft
Gauge
Needle
1 mm
plate
Differential feed dog
6. Fasten the screw (set screw, socket (CP) M4x4)
for the upper knife adjusting shaft.
Needle
plate
Upper knife
adjusting shaft
Set screw, socket (CP)
M4x4