Juki HZL-35Z [72/76] Check chart for performance problems

Juki HZL-35Z [72/76] Check chart for performance problems
72
GENERAL PROBLEMS
Machine does not sew.
* Foot controller is not connected.
-
See page 12 - 13.
* Power switch is turned off.
-
Turn on the switch.
Machine jams/knocks.
* Thread is caught in shuttle.
-
Clean shuttle
(see page 68 - 69).
* Needle is damaged.
-
Replace needle
(see page 24 - 25).
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 24 - 25.
* Needle is bent or blunt.
-
Replace needle
(see page 24 - 25).
* Machine is not threaded correctly.
-
See page
26 - 27.
* Thread is caught in shuttle.
-
Clean shuttle
(see page 68 - 69).
* Fabric is a certain knit or synthetic.
-
Use stretch
stitch needle (see page 24 - 25).
Stitches are irregular.
* Needle size is not correct for thread and fabric.
-
See page 24 - 25.
* Machine is not threaded correctly.
-
See page
26 - 27.
* Top thread tension is too loose.
-
See page
44 - 45.
* 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 26 - 27.
* Top thread tension is too tight.
-
See page 44 - 45.
* 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
22 - 23.
* Lint accumulates in bobbin case or shuttle.
-
Remove lint (see page 68 - 69)
Fabric puckers.
* Top thread tension is too tight.
-
Adjust thread tension
(see page 44 - 45).
* Stitch length is too long for sheer or soft fabric.
-
Shorten stitch length.
4. CHECK CHART FOR PERFORMANCE PROBLEMS

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