1. Remove: Mains lead - Sewing foot - Needles.
2. Disengage moving cutter.
3. Basic position: Turn dial
"a"
to bring indicator to position mark
"1"
and check if
clearance of
0.2 to 0.3mm
is obtained between fixed blade
"b"
and needle plate edge.
Make sure that there is no play among cutting width cam unit
"d"
, lever
"e"
and shaft
"f"
.
4. If not, loosen screws
"c"
.
5. Push dial "
a
" to the right to obtain a clearance of
0.2 to 0.3mm
.
6. Fasten screws
"c"
and check the clearance between fixed blade "b" and needle plate edge.
7. Re-engage moving cutter. Turn handwheel towards you and bring moving cutter to its
lowest position. Make sure if the moving cutter release knob
"g"
is not touching the shaft
support
"h"
(the gap between
"g"
and
"h"
is 0.1
~
0.2mm).
8. Turn cutting width dial
"a"
to the widest position
"7"
and check if the knob
"g"
touches
the shaft support
"h"
. Then, turn cutting width dial to the narrowest position
"1"
and
check if the gap between the knob
"g"
and the shafat support
"h"
is within 0.1
~
0.2mm.
9. If those gaps are not available, loosen screw
"j"
and get them by turning the shaft support
"h"
forward/backward or right or left.
10.Tighten screw
"j"
.
POSITION OF FIXED CUTTER AND CUTTING WIDTH DIAL SETTING
17b
Summary of Contents for 745 -
Page 1: ...745 845 SERVICE MANUAL 2 2 5 5 1 3 5 NA 6 0 B 1 2 1 T P T P...
Page 18: ...a HEIGHT AND ALIGNMENT OF CLOTH PRESSER BAR 4a 5 b c 4 7mm...
Page 24: ...TIMING OF LOWER LOOPER 8a A B C D b a 5 2mm R1 Fig 1 Fig 2 Fig 3...
Page 51: ...ANNEX SETTING POSITIONS OF SL DF DIALS b c f d g e 2 1 C B A...
Page 61: ...M E M O...