Attaching The Needle - JUKI DDL-8700B-7 Instruction Manual

(5) Adjusting the amount of oil supplied to the face plate parts
C
B
❶
Maximum Minimum
(6) Sample showing the appropriate amount of oil supplied to the face plate parts
Appropriate amount of oil (small)
Splashes of oil from the thread take-up lever
1 mm
Appropriate amount of oil (large)
Splashes of oil from the thread take-up lever
2 mm

11. Attaching the needle

WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
❶
When polyester filament thread is used, if the indented part of the needle is tilted toward opera-
tor's side, the loop of thread becomes unstable. As a result, hangnail of thread or thread break-
age may occur. For the thread that such phenomenon is likely to occur, it is effective to attach
the needle with its indented part slightly slanting on the rear side.
❶
D B
A
C
❷
1) Adjust the amount of oil supplied to the thread
take-up and needle bar crank ❷ by turning adjust
pin ❶.
2) The minimum amount of oil is reached when
A
marker dot A is brought close to needle bar
crank ❷ by turning the adjust pin in direction B.
❷
3) The maximum amount of oil is reached when
marker dot A is brought to the position just
opposite from the needle bar crank by turning the
adjust pin in direction C.
1) The state given in the figure shows the appropri-
ate amount of oil (oil splashes). It is necessary to
finely adjust the amount of oil in accordance with
the sewing processes. However, do not exces-
sively increase/decrease the amount of oil in the
hook. (If the amount of oil is too small, the face
plate parts will be hot or seize. If the amount of oil
is too much, the sewing product may be stained
with oil.)
2) Check the oil amount (oil splashes) three times
(with three sheets of paper).
Use the specified needle for the machine. Use the
proper needle in accordance with the thickness of
thread used and the kinds of the materials.
1) Turn the handwheel until the needle bar reaches
the highest point of its stroke.
2) Loosen screw ❷, and hold needle ❶ with its
indented part A facing exactly to the right in
direction B.
3) Insert the needle fully into the hole in the needle
bar in the direction of the arrow until the end of
hole is reached.
4) Securely tighten screw ❷.
5) Check that long groove C of the needle is facing
exactly to the left in direction D.
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