Feed Dog Height Adjustment (1) - 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 two screws (bolt, socket M3x8) for
the differential feed dog.
Needle plate
5. Set the gauge at the position of the figure, and
then adjust the differential feed dog to the
position of contacting with the gauge.
Gauge
Needle
plate
1 mm
Differential feed dog

Feed dog height adjustment (1)

Feed adjusting dial
Differential dial
Feed spring
Pulley
Bolt, socket M3x8
Differential feed dog
Needle
plate
3 - 13
[When operated disassembly,
assembly, and exchange]
6. Fasten the two screws (bolt, socket M3x8) for
the differential feed dog.
Needle plate
7. Loosen the two screws (bolt, socket M3x6) for
the main feed dog.
Main feed dog
Needle
plate
Bolt, socket M3x6
8. Set the gauge at the position of the figure, and
then adjust the main feed dog to the position of
contacting with the gauge.
Needle
plate
9. Fasten the two screws (bolt, socket M3x6) for
the main feed dog.
Main feed dog
Needle
plate
Bolt, socket M3x6
Bolt, socket M3x8
Differential feed dog
Main feed dog
Gauge
1 mm
Main feed Feed adjusting
dog dog
Needle plate