The stich is skiping - Juki 6716 Mechanical Sewing Machine

Canyou clairfy this question please it is not making sense in english thanks

try to decrease top thread tension a 1/4 notch
check with new needle (may be bent and hook is missing the thread loop)

It has to do with your bobbin and your tensioner. Sometimes the machine just slips a little out of time. Mine is an old singer machine (1970's) and if i slow down and keep it on a basic stitch, about #8 to #10 on length dial, then I won't drop so many stitches. Also, check your bobbin., If it is a little too short, the machine won't pick up the loop every time. All bobbins are not created equal! I hope that helps.

Hai, You try to change a new needle Otherwise you take the small waste piece stitched after change the another piece of fabric start a stitching.

here's a link for a manual

http://www.sewingmanuals.net/juki-model-lu562-amp-lu563-sewing-instruction-562563.html

SKIPPED STITCHES
1.the needle is not inserted correctly
2.the needle is damaged
3.the wrong size needle is being used
4.the foot is not attached correctly
if these suggestions don't help the the machine could be out of
time & the machine would need to be taken to a sewing machine
shop to be checked

Do you have thread in your bobbin?
Is your needle fully inserted in the needle bar?
Is it the right needle for the machine?
Is your needle damaged, bent or dull?

CHANGE UR STICH SIZE AND TIGHT UR TENSION DISK

there is a little screw on the bobbin holder sounds like it needs to be a little tighter

Have you changed your needle? If you have a dull or bent needle it can cause the machine to not lock the stitches together and the result is a straight stitch on every pattern. Also, check your stitch width selector and make sure that it did not get accidently moved.