ENGLISH
DDL-8100e DDL-8100eH
INSTRUCTION MANUAL
CONTENTS
1. SPECIFICATIONS ....................................................................................................... 1
2. INSTALLATION ...........................................................................................................
3. INSTALLING THE BELT COVER AND THE BOBBIN WINDER ................................
4. ADJUSTING THE HEIGHT OF THE KNEE LIFTER ...................................................
5. INSTALLING THE THREAD STAND ..........................................................................
6. LUBRICATION ............................................................................................................
7. ADJUSTING THE AMOUNT OF OIL (OIL SPLASHES) IN THE HOOK ....................
8. ATTACHING THE NEEDLE .........................................................................................
9. SETTING THE BOBBIN INTO THE BOBBIN CASE ..................................................
10. ADJUSTING THE STITCH LENGTH ..........................................................................
11. PRESSER FOOT PRESSURE ....................................................................................
12. HAND LIFTER .............................................................................................................
13. ADJUSTING THE HEIGHT OF THE PRESSER BAR ................................................
14. THREADING THE MACHINE HEAD ..........................................................................
15. THREAD TENSION .....................................................................................................
1
2
3
3
4
5
6
6
7
7
7
7
8
8
16. THREAD TAKE-UP SPRING .......................................................................................
17. ADJUSTING THE THREAD TAKE-UP STROKE .......................................................
18. NEEDLE-TO-HOOK RELATIONSHIP .......................................................................
19. HEIGHT OF THE FEED DOG ...................................................................................
20. TILT OF THE FEED DOG ..........................................................................................
21. ADJUSTING THE FEED TIMING ..............................................................................
22. MOTOR PULLEYS AND BELTS ...............................................................................
9
9
10
11
11
12
12
i
1. SPECIFICATIONS
DDL-8100e DDL-8100eH
Application
Sewing speed Max. 4,500 sti/min Max. 4,000 sti/min
Stitch length Max. 5 mm
Needle DB x 1 #9 to #18 DA x 1 #20 to #23
Presser foot lift (by knee lifter) 10 mm (standard) 13 mm (Max.)
Lubricating oil JUKI MACHINE OIL #7
Noise
General fabrics, light-weight
and medium-weight materials
-
Equivalent
A-weighted value of 80 dB; (Includes K
ISO 11204 GR2 at 4,200 sti/min.
continuous emission sound pressure level (LpA) at the workstation:
=2.5dB); according to ISO 10821 - C.6.2-
pA
Medium-weight materials,
heavy-weight materials
2. INSTALLATION
3
1
22.5 mm
2
1
A
4
B
3
1
18.5 mm
3
3
3
2
3
3
4
1
1
(1) Installing the oil pan
1) The under cover should rest on the four corners of the machine table groove.
2) Two rubber seats 1 for supporting the head portion on the operator side A are xed on the extended
portion of the table by hitting the nail 2 , and the other two rubber cushion seats 3 on the hinge side
are xed by using a rubber-based adhesive. Then, oil pan 4 is placed.
B
Fit hinge 1 into the opening in the machine bed, and t the machine head to table rubber hinge 2 be-
3)
fore placing the machine head on cushions 3 on the four corners.
– 1 –
– 2 –
3. INSTALLING THE BELT COVER AND THE BOBBIN WINDER
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the
machine and check to be sure that the motor has totally stopped rotating in prior.
(1) Installation procedure
1) Drill four guiding holes A, B, C and D for wood-
en screws in the table.
2) Insert support 1 of the belt cover in the tapped
hole in the arm.
3) Pass the handwheel throu gh the hole in belt
33
62
cover A 3, then set the handwheel on the arm. At
this time, you can smoothly install the handwheel
diagonally from the rear of the handwheel by tilt-
ing belt cover A 3 as illustrated in the gure.
B
4) Place belt cover B 2 on guiding holes C and D.
5) Fix belt cover A 3 on the arm using screws 4,
and washer 6. At this time, tighten screw 4
5
with a tightening torque of 300 N•cm and screw
with a tightening torque of 250 N•cm. If you
5
tighten further these screws, the securing state of
the belt cover will not change.
6) Fit cap 7 to the belt cover A.
7) Move belt cover B 2 backward until the rubber
section of belt cover B 2 comes in contact with
belt cover A 3. Then, further move the belt cover
B in the same direction by 0.5 to 1 mm. Now, x
the belt cover B in position using wooden screws
and washers.
8) Fix bobbin winder 8 in guiding holes A and B
using wooden screws and washers.
(mm)
3
3
1
6
4
7
2
5
4
C
47
D
A
63.5
75.5
8
4. ADJUSTING THE HEIGHT OF THE KNEE LIFTER
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the
machine and check to be sure that the motor has totally stopped rotating in prior.
1
2
3
1) The standard height of the presser foot lifted using the knee lifter is 10 mm.
2) You can adjust the presser foot lift up to 13 mm using knee lifter adjust screw 1.
3) When you have adjusted the presser foot lift to over 10 mm, be sure that the bottom end of needle bar
in its lowest position does not hit presser foot 3.
2
5. INSTALLING THE THREAD STAND
1) Assemble the thread stand unit as illustrated in
2
1
2) Tighten locknut 1 enough to x the thread stand.
3) For ceiling wiring, pass the power cord through
the gure shown on the left, and insert it in the
hole in the machine table.
spool rest rod 2.
– 3 –
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