Jaguar 786 - Инструкция по эксплуатации - Страница 84

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6. CHECKING PERFORMANCE PROBLEMS

GENERAL PROBLEMS

Machine does not sew.

*  Power line cord or foot switch is not connected.- See page 10 - 11.

*  Power switch is turned off.- Turn on the switch.

Machine jams/knocks.

*  Thread is caught in shuttle.- Clean shuttle (see page 78 - 79).

*  Needle is damaged.- Replace needle (see page 18 - 19).

Fabric does not move.

*  Presser foot is not lowered - lower presser foot.

*  Stitch length is set at 0. - Set it at 1 to 4.

STITCHING PROBLEMS

Machine skips stitches.

*  Needle is not all the way up into needle clamp. - See page 18 - 19.

*  Needle is bent or blunt. - Replace needle (see page 18 - 19).

*  Machine is not threaded correctly. - See page 20 - 21.

*  Thread is caught in shuttle. - Clean shuttle (see page 78 - 79).

Stitches are irregular.

*  Needle size is not correct for thread and fabric. - See page 18 - 19.

*  Machine is not threaded correctly. - See page 20 - 21.

*  Top thread tension is too loose. - See page 26 - 27.

*  Fabric is being pulled or pushed against machine feeding action. - Guide it gently.

*  Bobbin has not been wound evenly. - Rewind bobbin.

Needle breaks.

*  Fabric is being pulled or pushed against machine feeding action. -Guide it gently.

*  Needle size is not correct for thread and fabric. - See page 18 - 19.

*  Needle is not all the way up into the needle clamp (See page 18 - 19).

THREAD PROBLEMS

Thread bunches.

*  Top and bobbin threads are not drawn back under presser foot before starting seam. 

  -  Draw  both  threads  back  under  presser  foot  about  4  inches  (10  cm)  and  hold  until  a  few 

stitches are formed.

Needle thread breaks.

*  Machine is not threaded correctly. -  See page 20 - 21.

*  Top thread tension is too tight. - See page 26 - 27.

*  Needle is bent. - Replace needle (see page 18 - 19).

*  Needle size is not correct for thread and fabric - See page 18 - 19.

Bobbin thread breaks.

*  Bobbin case is not threaded correctly. See page 16 - 17.

*  Lint accumulates in bobbin case or shuttle. - Remove lint (see page 78 - 79).

Fabric puckers.

*  Top and bobbin thread tensions are too tight. - Adjust thread tensions (see page 26 - 27).

*  Stitch length is too long for sheer or soft fabric. - Shorten stitch length.