21
MECHANICAL ADJUSTMENT
BUTTONHOLE STITCH BALANCE
TO CHECK:
1.
Set the machine as follows:
STITCH SELECTOR ...........
STITCH LENGTH DIAL ....... BLUE ZONE
STITCH WIDTH DIAL .......... 6.5
2.
Attach the automatic buttonhole foot.
3.
Sew buttonhole and check the stitch balance between the right side and left side of
buttonhole.
4.
The correct buttonhole stitch balance is when there is the same coarse on the right and left
sides of buttonhole.
ADJUSTMENT PROCEDURE:
1.
Remove the bed cover. (See page 5)
2.
Loosen hexagonal socket screw (A).
3.
If the right side of the buttonhole is too sparse, turn the ring (B) in the direction of (C).
If the left side of the buttonhole is too sparse, turn the ring (B) in the direction of (D).
4.
Tighten hexagonal socket screw (A) securely.
(C)
(D)
RING (B)
HEXAGONAL SOCKET
SCREW (A)
I
NCORRECT
I
NCORRECT
CORRECT
Summary of Contents for HD718
Page 1: ...SERVICE MANUAL PARTS LIST MODEL HD718 First Edition 19 May 2017...
Page 33: ...PARTS LIST...
Page 42: ...40 MODEL HD718 PARTS LIST 1 2 3 4 5 6 7 8 9 10 11 12 16 9 13 14 15 18 17 20 24 23 21 23 22 19...
Page 44: ...42 MODEL HD718 PARTS LIST 1 4 2 5 3 6 8 9 20 19 18 17 15 13 12 11 10 16 21 4 7 5 11 14...
Page 54: ...52 MODEL HD718 PARTS LIST 1 2 3 4 5 8 17 12 14 6 10 11 13 15 20 16 9 7 19 18...