1) Adjust the amount of oil supplied to the thread
take-up and needle bar crank
by turning adjust
pin
.
2) The minimum amount of oil is reached when
marker dot
is brought close to needle bar crank
by turning the adjust pin in direction
.
3) The maximum amount of oil is reached when
marker dot
is brought to the position just op-
posite from the needle bar crank by turning the
adjust pin in direction
.
minimum
maximum
(6) Sample showing the appropriate amount of oil supplied to the face plate parts
1) The state given in the gure shows
the appropri-
ate amount of oil (oil splashes). It is necessary to
nely 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 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).
S
plashes of oil from the thread take-up lever
1 mm
Appropriate amount of oil (large)
Appropriate amount of oil (small)
2 mm
S
plashes of oil from the thread take-up lever
(5) Adjusting the amount of oil supplied to the face plate parts
10. 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.
Use the specied 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
, and hold needle
with its in-
dented 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
.
5) Check that long groove C of the needle is facing exactly to the left in direction D.
When polyester lament 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 eective to attach
the needle with its indented part slightly slanting on the rear side.
– 9 –
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