Jaguar 962 - Инструкция по эксплуатации - Страница 77

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5. 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 72 - 73).

*  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 72 - 73).

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 72 - 73).

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.