Adjusting The Amount Of Oil (Oil Splashes) - JUKI LZ-2280A Series Instruction Manual

3-3. Adjusting the amount of oil (oil splashes)

WARNING :
Be extremely careful about the operation of the machine since the amount of oil has to be checked
by turning the hook at a high speed.
(1) Confirmation of the amount of oil in the hook
① Amount of oil (oil splashes) confirmation paper
Approx.
* Use any paper available regardless of the material.
* When carrying out the procedure described below in 1) and 2), confirm the state that the needle
thread from the thread take-up lever to the needle and the bobbin thread are removed, the presser
foot is lifted and the slide plate is removed. At this time, take extreme caution not to allow your
fingers to come in contact with the hook.
1) If the machine has not been sufficiently warmed up for operation, make the machine run idle for approxi-
mately three minutes. (Moderate intermittent operation)
2) Place the amount of oil (oil spots) confirmation paper under the hook immediately after the machine stops
running.
3) Confirm the height of the oil surface in the oil reservoir is within the range between "HIGH" and "LOW".
4) Confirmation of the amount of oil should be completed in five seconds. (Check the period of time with a
watch.)
(2) Sample showing the appropriate amount of oil in the hook
Appropriate amount of oil (small)
Splashes of oil from the hook
Min. 0.5 mm
1) The amount of oil shown in the samples on the left should be finely 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).
70 mm
② Position to confirm the amount of oil (oil splashes)
10 mm
Approx.
Oil splashes confirmation paper
Appropriate amount of oil (large)
Max. 1 mm
– 8 –
Hook
Splashes of oil from the hook