CONTENTS
page
A
.
HOW TO USE THIS MANUAL
....................
2
..................
.
B TROUBLE AND CHECK POINTS 3
1
.
Skipping stitches
...........................
3
2
.
Material not feeding
.........................
3
3
.
Breaking needle
............................
3
............................
.
4 Heavy running
4
5
.
Machine noise
.............................
4
6
.
Needle sewing over the maximum width
...........
4
7
.
Uneaven seems of back and forth at manual
.........
4
8
.
Improper position of needle drop slot at
the max
.
stitch width
........................
5
9
.
Needle swing in straight stitch sewing
.............
5
10
.
Feeding at bar tack sewing of buttonhole
...........
5
11
.
Not smooth working of pattern selecting dial
........
5
12
.
Imperfect automatic patterns
...................
5
13
.
Uneven seams of reverse patterns
................
6
14
.
Breaking of upper thread
.....................
6
15
.
Breaking of lower thread
......................
6
16
.
How to assemble the parts correctly
..............
7
C
.
HOW TO ADJUST THE ELEMENTS
........................
1
-
1
.
Height of presser bar 8
........................
1
-
2
.
Height of presser bar 8
.........................
2
.
Height of needle bar 8
..........
.
3
-
1 Clearance between needle and hook point 9
..........
.
3
-
2 Clearance between needle and hook point 9
......................
4-1
.
Position of shuttle hook 10
......................
.
4
-
2 Position of shuttle hook 10
....
.
51 Clearance between shuttle driver shaft and race way 11
....
.
52 Clearance between shuttle driver shaft and race way 11
...................
.
6
-
1 Position of vertical feed cam 12
...................
6
-
2
.
Position of vertical feed cam 1 2
7.1
.
Heightoffeeddog
..........................
13
..........................
7
-
2
.
Height of feed dog 13
...............................
.
8 Forth seam 14
........................
9
-
1
.
Back and forth seam 14
........................
9.2
.
Back and forth seam 14
.....
.
10.1
Back and forth seam at automatic reverse patterns
.....
.
10.2
Back and forth seam at automatic reverse patterns
................
.
11
Adjustment of button hole seams
12.1
.
Needle swing in straight stitch sewing
.............
12.2
.
Needle swing in straight stitch sewing
.............
12.3
.
Needle swing in straight stitch sewing
.............
.
.......................
13.1 Centering of the needle
.
.......................
13.2 Centering of the needle
........................
.
14 Position of feed cam
.
................
15.1 Setting of maximum stitch width
................
.
15.2 Setting of maximum stitch width
.
................
15.3 Setting of maximum stitch width
.
............
16.1 Position of the maximum needle swing
.
............
16.2 Position of the maximum needle swing
. ............
16.3
Position of the maximum needle swing
17.1
.
Contact of upper shaft gear, pattern cam and feed cam
. .
17.2
.
Contact of upper shaft gear, pattern cam and feed cam
. .
17.3
.
Contact of upper shaft gear, pattern cam and feed cam
. .
.
....................
18.1 Sewing timing of the needle
18.2
.
Sewing timing of the needle
....................
18.3
.
Sewing timing of the needle
....................
19.1A
.
Clearance between cam finger and pattern cam
.......
19
-
1 B
.
Clearance between cam finger and feed cam
.........
20.1A
.
Position of cam finger for pattern cam
.............
20
-
1 B
.
Position of cam finger for feed cam
...............
21.1
.
Setting of upper thread tension dial
..............
21.2
.
Setting of upper thread tension dial
..............
22
.
Adjustment of feed dog movement at buttonhole sewing
.
.......................
23.1 Setting of pattern dial
.
.......................
23.2 Setting of pattern dial
24.1
.
How to take off stitch width, stitch length dial
and arm panel
............................
24.2
.
How to take off stitch width, stitch length dial
.............................
and arm panel
24.3
.
How to take off stitch width, stitch length dial
............................
and arm panel
25.1
.
Adjusting of the drive belts
....................
25.2
.
Adjusting of the drive belts
....................
25.3
.
Adjusting of the drive belts
....................
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