– 8 –
8. Height of feed dog
9. Feed dog timing
[Checking items]
1
Front end of feed dog
* Adjust the stitch length to 2.5 mm. Bring the feed dog to
its highest position. At this time, check that the height of
front end
1
of feed dog with respect to the top surface of
the throat plate is 1.3 ± 0.1 mm
A
.
[How to perform adjustment]
○ Set the feed dog in its highest position.
○ Loosen the setscrew
C
of the eccentric stud
D
.
○ Turn the eccentric stud
D
to perform adjustment.
○ Tighten the setscrew
C
.
[Checking items]
1
Needle
2
Throat plate
3
Feed dog
* Adjust the stitch length to 2.5 mm. When the feed dog
3
and the needle
1
go up, check that the tip of needle
1
and the teeth tip of feed dog
3
are simultaneously
aligned with the top surface of throat plate
2
.
* The position of the needle
1
shall be ± 0.2 mm from the
top surface of throat plate
2
.
[How to perform adjustment]
○ Loosen the setscrews
A
of the feed eccentric cam
B
.
○ Turn the feed eccentric cam
B
to perform adjustment.
○ Tighten the setscrews
A
.
D
C
1
A
3
2
1
B
A
