Singer 7470 Confidence Instruction Manual - Page 86

Performance Checklist - sewing machine 3 ways

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5. PERFORMANCE CHECKLIST GENERAL PROBLEMS Machine does not sew. * Power switch is turned off.- Turn on the switch. * Buttonhole lever is not raised when sewing stitch patterns. - Raise buttonhole lever. * Buttonhole lever is not lowered when sewing buttonhole. - Lower buttonhole lever. Machine jams/knocks. * Thread is caught in hook.- Clean hook (see page 78 - 79). * Needle is damaged.- Replace needle (see page 24 - 25). Fabric does not move. * Presser foot is not lowered - Lower presser foot. * Stitch length is too short - Lengthen stitch length. * Feed dogs are lowered - Raise feed dogs. Desired pattern cannot be selected. * Twin needle mode switch has been turned on and lit red. - Turn off the switch. STITCHING PROBLEMS Machine skips stitches. * Needle is not all the way up into needle clamp. - See page 24 - 25. * Needle is bent or blunt. - Replace needle (see page 24 - 25). * Machine is not threaded correctly. - See page 20 - 21. * Thread is caught in hook. - Clean hook (see page 78 - 79). Stitches are irregular. * Needle size is not correct for thread and fabric. - See page 24 - 25. * 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 24 - 25. * Needle is not all the way up into the needle clamp. - See page 24 - 25. 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 24 - 25). * Needle size is not correct for thread and fabric - See page 24 - 25. Bobbin thread breaks. * Bobbin case is not threaded correctly. - See page 18 - 19. * Lint accumulates in bobbin case or hook. - Remove lint (see page 78 - 79). Fabric puckers. * Top thread tension is too tight. - Adjust thread tension (see page 26 - 27). * Stitch length is too long for sheer or soft fabric. - Shorten stitch length. 86

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86
GENERAL PROBLEMS
Machine does not sew.
* Power switch is turned off.
-
Turn on the switch.
* Buttonhole lever is not raised when sewing stitch patterns.
– Raise buttonhole lever.
* Buttonhole lever is not lowered when sewing buttonhole.
– Lower buttonhole lever.
Machine jams/knocks.
* Thread is caught in hook.
-
Clean hook (see page 78 - 79).
* Needle is damaged.
-
Replace needle (see page 24 - 25).
Fabric does not move.
* Presser foot is not lowered
-
Lower presser foot.
* Stitch length is too short - Lengthen stitch length.
* Feed dogs are lowered - Raise feed dogs.
Desired pattern cannot be selected.
* Twin needle mode switch has been turned on and lit red.
– Turn off the switch.
STITCHING PROBLEMS
Machine skips stitches.
* Needle is not all the way up into needle clamp.
-
See page
24 - 25.
* Needle is bent or blunt.
-
Replace needle (see page
24 - 25).
* Machine is not threaded correctly.
-
See page 20 - 21.
* Thread is caught in hook.
-
Clean hook (see page 78 - 79).
Stitches are irregular.
* Needle size is not correct for thread and fabric.
-
See page
24 - 25.
* 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
24 - 25.
* Needle is not all the way up into the needle clamp.
-
See page
24 - 25.
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 24 - 25).
* Needle size is not correct for thread and fabric
-
See page
24 - 25.
Bobbin thread breaks.
* Bobbin case is not threaded correctly.
-
See page 18 - 19.
* Lint accumulates in bobbin case or hook.
-
Remove lint
(see page 78 - 79).
Fabric puckers.
* Top thread tension is too tight.
-
Adjust thread tension
(see page 26 - 27).
* Stitch length is too long for sheer or soft fabric.
-
Shorten
stitch length.
5. PERFORMANCE CHECKLIST