Adjusting Of The Feed Dog Height - Brother S-7220B Instruction Manual

13. STANDARD ADJUSTMENTS

13-6. Adjusting of the feed dog height

Becomes
higher
Becomes
lower
Becomes higher
Becomes lower
Becomes higher
Becomes lower
51
<-4[]3>
1.0 mm
<-405>
1.2 mm
3764M
3765M
Needle plate
3766M
Becomes higher
Becomes lower
3767M
S-7220B
The standard height of the feed dog (1) when it is at its
maximum height above the top of the needle plate is 1.0 mm
for -4[]3 specifications, and 1.2 mm for -405 specifications.
1. Turn the pulley until the feed dog (1) rises to the highest
position.
2. Tilt back the machine head.
3. Loosen the screw (2).
4. Turn the feed lifting rock bracket stud (3) within a range of
90° from the reference line (4) to adjust the vertical height
of the feed bar (5). (Fig. [A])
5. Tighten the screw (2).
* If you are worried about the angle of the feed dog (1), turn
the shaft (6) while carrying out the above adjustment. (Fig.
[B])
(Refer to "13-7. Adjusting the feed dog angle" on the next
page for details of this operation.)