Kunft KSM2612 - Loose stitch [looping stitches]; Puckers or folding; Unsmooth stitches and uneven fabric feeding; Thread jamming

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KSM2612
Fault Reason Correction
Loose stitch
[looping
stitches]
1. Incorrect threading;
2. Incorrect bobbin
installation;
3. Unreasonable
adjustment of the stitch
length;
4. Over tension
1. Check the threading;
2. Place the bobbin
correctly;
3. Choose a sewing
needle with the right
specication;
4. Adjust the tension;
Puckers or
folding
1. The needle is too big
for the fabric;
2. Unreasonable
adjustment of the
fabric’s feeding length;
3. Over tension of the
upper thread.
1. Choose a better
needle;
2. Choose appropriate
functions for short
fabric feeding;
3. Adjust to the upper
thread’s appropriate
tension.
Unsmooth
stitches
and uneven
fabric
feeding
1. Poor thread quality;
2. Wrong bobbin
threading;
3. The fabric was jammed.
1. Choose a better thread;
2. Re-threading correctly;
3. Do not pull and drag
the fabric during
sewing.
Thread
jamming
1. The upper thread was
hooked on the hook
plate;
2. The upper thread was
hooked on the bobbin.
1. It is mainly caused by
incorrect threading.
Cut the upper part of
the thread, remove the
bobbin and smooth the
hooked thread;
2. Put on the transparent
cover while sewing.
Attention:
The sewing needle, the thread and fabrics must be well-matched.
3. TECHNICAL SPECIFICATIONS
Power supply: 230 V ~ 50 Hz
EN
sewing machine
Maq-Costura-KSM2612-Manual-2.indd 23 18/02/19 18:35