MOVING CUTTER AND VERTICAL FEED TIMING
14b
Caution
: The eccentric
"7"
is used for feed and moving cutter timing. See page 3.
1. Remove: Mains lead - Sewing foot - Machine base.
2. Check height and orientation of needle bar - height of feed dog. See pages 5&13.
3. Turn the handwheel towards you and bring the needle bar to its highest position. Check and
make sure if moving cutter and needle bar start simultaneously from their highest
position.(Fig.1)
4. If necessary, turn the handwheel towards you and bring needle bar to its lowest position.
Then bring up the needle bar to the lower edge of
"R1"
needle eye flush with the needle
plate.(Fig.3) Loosen both screws
"a"
bring eccentric mark
"A"
close to mark
"B"
. The
distance between marks
"A"
and
"B"
should be within -0.5 to 0.5mm. Fasten both screws
"a"
. Recheck the above adjustments.(Fig.4)
Note: Make sure that the machine turns freely without any biding effect.
5. Height of moving cutter: Turn the handwheel towards you to bring moving cutter to its
lowest position. Check and make sure that the tip of moving cutter blade is at
1.0 to
1.5
mm
below the fixed cutter. (Fig.2) If necessary, loosen screw
"c"
and adjust height
by sliding moving cutter
"d"
up or down. Loosen screw
"c"
firmly and recheck its height.
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...
