JOCCA 6643 Manual De Instrucciones página 16

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HOW TO LIFT UP THE LOWER THREAD
-This sewing machine lifts up the thread manually, and this is very easily done by
taking the following steps:
1.Hold the upper thread with your left hand
2.Using your right hand turn the manual wheel (nº 11) in the direction indicated by
the arrows (clockwise) for the needle to make a complete cycle (go down/go up
completely) and when the needle is in the lower position it will take up the lower
thread and lift it up to the highest position.
3.Once the needle is in its highest position take hold of the lower thread in your
hand and pull both threads (upper and lower) towards the back part of the machi-
ne.
4.The sewing machine is now ready to start sewing again.
HOW TO ADJUST THE THREAD TENSION
-If you see that when you are sewing the seams are not tight
and the thread knots up frequently, this means that the thread
tension must be checked.
-For proper sewing the tension of both the upper and the lower
thread must be the same, and there is a dial provided for this
purpose (nº 3) to adjust the upper tension more or less as
required and also to adjust the tension of the lower thread. The
lower spool has a screw to adjust the thread tension. Please see the illustration.
-The thread tension depends on a series of circumstances, on the type of needle,
on the type of cloth, on the type of stitch and consequently in order to check the
correct thread tension trial stitching must be made and an adjustment made in
accordance with the result.
-To know whether the tension is correct, the seam must be like in the following illus-
tration a.
Examples of incorrect thread tension
•Upper thread tension too high (or lower thread too low), image b.
•Upper thread tension too low ( or lower thread too high), image c
HOW TO LOAD AN EMPTY SPOOL
-When the lower spool no longer has any thread left, you have an automatic option
to load it by taking the following steps:
1.Pick up the empty spool and put it on the spool spindle (nº 20)
2.Take hold of the end of the upper bobbin thread in the bobbin peg (nº 14) and
thread through the pressure selector (nº 15) until you reach the empty spool which
is located on the spool spindle (nº 20), take hold of the empty spool and wind the
thread around the same a couple of times.
3.Finally press the winding button (nº 13) to start to fill the bobbin with thread.
When you have reached the amount you require, press the button again (nº 13) to
stop and cut the thread
NEEDLE CHANGE
-If the needle breaks you will need to change this to be able to carry on sewing.
For this please take the following steps:
1.Disconnect the machine from the mains electricity supply.
2.Lower the presser foot by means of the lever (nº 8)
3.Lift the needle up manually to its highest point. To do this turn the manual wheel
(nº 11) in the direction indicated by the arrows (clockwise).
4.Turn the needle adjustment screw (nº 5), towards the left and the needle will
come out.
5.To put a new needle in place, please make sure that the flat part of the needle is
facing the back part of the machine.
6.Take hold of the needle between your thumb and forefinger and push the needle
up to the very end.
7.Finally tighten down the adjustment screw (nº5) towards the right to ensure that
the needle is fully tight and in place.
STITCHING MODE SELECTION-
The stitching you require is selected by turning the stitching dial (nº 10) to the right
or to the left. Please ensure that the needle is in its highest position before attemp-
ting to turn the stitch selector dial.
WARNING: If the needle is not in its highest position it can easily break.
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