JUKI DDL-7000A-7 Series User manual

DDL-7000A-7
Long pitch kit
INSTRUCTION MANUAL

– 1 –
1.General
The long pitch kit is an optional part kit that changes the maximum stitch length to 7 mm (standard: 5 mm).
Target model: DDL-7000AH-7 (for heavy-weight materials)
2.List of long pitch kit parts
Part number of the long pitch kit: 40234068 (with four teeth)
Description Parts No.
Stitch dial 22971402
Throat plate 23645807
Description Parts No.
Stitch dial 22971402
Throat plate 11062007
Feed dog 11062601
* It is not necessary to change the feed dog.
Note) The long pitch kit with the aforementioned part number has four teeth.
If you want to use a three-teeth feed dog, prepare the below-stated part.
3. Required tools
 *Variouskindsofat-bladescrewdrivers
* Spacer with plate thickness of 1 mm
* Open-end wrench, 10 mm

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4. Installation procedure
A
A
❶
❷
❸
❹
1) Replace the stitch dial with the one for long pitch.
Turn the current stitch ❶dial clockwise to align
its scale mark "0" to the marker dot A on the
machine arm. Then, remove the setscrew. Attach
the stitch dial (22971402) ❷for long pitch in such
a way that its scale mark "0" is aligned with the
marker dot on the machine arm.
2) Remove the current throat plate. Then, align the
scale mark "7" of the stitch dial ❷with the marker
dot Aon the machine arm.
Turn the handwheel by hand in the direction of
the arrow to check to make sure that the feed dog
interferes neither with the bed nor with the knife.
3) Attach the throat plate ❸(23645807) for long
pitch.
Check to make sure that there is an appropriate
clearance between the slots in throat plate and
the feed dog and that they are not rubbed against
each other.
4) Remove the side plate ❹.

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❷
5) Align the scale mark "7" of the stitch dial ❷with
the marker dot on the machine arm. Place a spac-
er ❼with plate thickness of 1 mm between the
reverse feed lever ❺and the reverse feed lever
stopper ❻.
6) Loosen the setscrews 󱢳of the feed lever arm
(asm.).
7) While pushing up the reverse feed lever ❺to
prevent the 1-millimeter spacer ❼from slipping
out, tighten the setscrew 󱢳of the feed lever at
the position where the feed lever arm pin ❽lightly
comes in contact with the feed regulating rod ❾.
8) Align the scale mark "7" of the stitch dial ❷with
the marker dot on the machine arm. At this time,
check to make sure that thread is a slight back-
lash (play) in the reverse feed lever ❺in its mov-
ing direction.
(Caution) If there is no aforementioned backlash,
abnormal noise or breakage of the re-
lated parts may occur while the sewing
machine is in operation.
9) Turn the handwheel by hand in the direction of the arrow to check the actual stitch length.
 Inthecasetheactualstitchlengthdi󰀨ersfromthestitchlengthsetwiththestitchdial❷, loosen the set-
screw 󱢵of the feed regulating base 󱢴and adjust the feed regulating pin 󱢶with an open-end wrench.
󱢵 󱢶
󱢴
❺
❻
❽
❾
󱢳
❼

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(Caution)1. In the case of using the stitch pitch that is larger than the one with the scale mark "5" of the
stitch dial ❷, the maximum sewing speed should be set to 3500 sti/min or less.
2. Be aware that, in the case of performing automatic reverse feed stitching with the stitch pitch
that is larger than the one with the mark "5" of the stitch dial ❷, the stitches sewn with the
normal feed stitching and those sewn with the reverse feed stitching will not be the same.
❹10) Attach the side plate ❹.