JUKI DLN-6390 Manuel D'utilisation page 84

(2) Adjusting the amount of oil in the hook
WARNING :
�e 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 Amount of oil (oil splashes) confirmation paper
Approx. 70 mm
＊ Use any paper available regardless of the material.
＊ When performing the operation of 2) below� remove needle thread from the thread take�up lever to needle and
bobbin thread. Then be careful to check the machine with the presser foot lifted. At this time� be careful not
to allow your fingers to touch the hook.
1) If the machine has not been sufficiently warmed up for operation, make the machine run idle for approximately three
mnutes. (Moderate ntermttent operaton)
2) Place the amount of oil (oil splashes) confirmation paper under the hook while the sewing machine is in operation.
(Secton A n the drecton of the arrow mark ( → ))
3) Confirm that the height of the oil surface in the oil reservoir is within the range between "H" and "L".
4) Confirmation of the amount of oil should be completed in five seconds. (Check the period of time with a watch.)
• Sample showing the appropriate amount of oil
Splashes of oil from the hook
4 to 5mm
• Adjusting the amount of oil (oil spots) in the hook
20
2 Position to confirm the amount of oil (oil splashes)
1) The sample shown in the figure on the left side is the
2) Adjust the amount of ol n the hook so that the ol
) Turnng the ol amount adjustment screw n the "+" d-
B A
2) After the amount of ol n the hook has been properly
amount of ol adjusted at the tme of delvery.
Check the amount of ol before usng the machne and
re-adjust the amount of ol approprately accordng to
the condton of use. (If the ol amount s nadequate,
the hook can be sezed (the hook becomes hot). If the
ol amount s excessve, the sewng product can be
staned wth ol (ol leaks))
amount (ol splashes) should not change whle check-
ng the ol amount three tmes (on the three sheets of
paper).
recton (n drecton A ) wll ncrease the amount of ol (ol
spots) n the hook, or n the "–" drecton (n drecton B )
wll decrease t.
adjusted wth the ol amount adjustment screw, make
the sewng machne run dle for approxmately 30 sec-
onds to check the amount of ol n the hook.
A