JUKI DDL-8100B-7 Series User Manual

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1) The amount of oil shown in the samples on the left
should be nely adjusted in accordance with sewing
processes.
Be careful not to excessively increase/decrease the
amount of oil in the hook. (If the amount of oil is too
small, the hook will be seized (the hook will be hot).
If the amount of oil is too much, the sewing product
may be stained with oil.)
2) Adjust the amount of oil in the hook so that the
oil amount (oil splashes) should not change while
checking the oil amount three times (on the three
sheets of paper).
Splashes of oil from the hook
1 mm
Appropriate amount of oil (large)
Appropriate amount of oil (small)
1) Turning the oil amount adjustment screw attached
on the hook driving shaft front bushing in the “+”
direction (in direction A) will increase the amount of
oil (oil spots) in the hook, or in the “–” direction (in
direction B) will decrease it.
2) After the amount of oil in the hook has been prop-
erly adjusted with the oil amount adjustment screw,
make the sewing machine run idle for approximate-
ly 30 seconds to check the amount of oil in the
hook.
(2) Adjusting the amount of oil (oil spots) in the hook
(3) Sample showing the appropriate amount of oil in the hook
2 mm
Splashes of oil from the hook
①
Amount of oil (oil splashes) conrmation paper
②
Position to conrm the amount of oil
(oil splashes)
Oil splashes
conrmation paper
25 mm
70 mm
(4) Conrmation of the amount of oil supplied to the face plate parts
* When carrying out the work described below in
2), remove the face plate and take extreme cau-
tion not to allow your ngers to come in contact
with the thread take-up lever.
1) If the machine has not been sufciently warmed
up for operation, make the machine run idle for
approximately three minutes. (Moderate intermit-
tent operation)
2) Place the amount of oil (oil spots) conrmation
paper under the hook immediately after the ma-
chine stops running.
3) Conrm the height of the oil surface in the oil
reservoir is within the range between “HIGH” and
“LOW”.
4) The time required for the conrmation of the
amount of oil (oil splashes) should be completed
in ten seconds. (Measure the period of time with
a watch.)
A
B

JUKI DDL-8100B-7 Series Specifications

General

Brand	JUKI
Model	DDL-8100B-7 Series
Category	Sewing Machine
Language	English