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(3) Sample showing the appropriate amount of oil in the hook
Appropriate amount of oil (small)
Splashes of oil from the hook
Appropriate amount of oil (large)
Splashes of oil from the hook
2 mm
(4) Confirmation of the amount of oil supplied to the face plate parts
① Amount of oil (oil splashes) confirmation paper
70 mm
② Position to confirm the amount of oil
(oil splashes)
Oil splashes
confirmation paper
(5) Adjusting the amount of oil supplied to the face plate parts
C
B
❶
Maximum
Minimum
1 mm
❶
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) Check the oil amount (oil splashes) three times
(with three sheets of paper).
* When carrying out the work described below in
2), remove the face plate and take extreme cau-
tion not to allow your fingers to come in contact
with the thread take-up lever.
1) If the machine has not been sufficiently 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) confirmation
paper under the hook immediately after the ma-
chine stops running.
3) Check to make sure that the oil surface in the oil
pan remains in the range from "HIGH" to "LOW".
4) The time required for the confirmation of the
amount of oil (oil splashes) should be completed
in ten seconds. (Measure the period of time with
a watch.)
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
❷
crank ❷ by turning the adjust pin in direction B.
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.
– 12 –
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