Baby Lock Jewel BL J18 Manuale delle Istruzioni Scaricare il pdf (Pagina 36)

TENSION

IS POOR

HANDWHEEL

WON’T ROTATE

HARD TO

GUIDE

MACHINE

•Ifusingshortstaplethreads,inexpensiveorindustrialthreadsor

coated threads, lint and other material will build up under the

tension leaf spring and begin to li the spring, reducing the spring’s

ability to compress against the thread. By inserting a needle under

the spring and clearing out the lint, the bobbin tension will return

fairly close to its preset tension.

•Ifthebobbiniswoundtootightortooloose,thiscanleadtopoor

and inconsistent tension. Make sure when the bobbin is wound that

the thread tension is not so tight that the wound bobbin thread feels

hard and causes the bobbin to bulge when it is wound. It should also

not be so loose that the thread is spongy, causing the thread to tangle

as it is wound.

•Turn o and unplug the machine from the electrical outlet. Re-

move the needle plate to improve visibility. Remove any visible loose

threads. Lubricate the hook, forcibly turn the handwheel clockwise

and if necessary counterclockwise several times, and then remove the

thread caught in the hook.

•Centerthecarriagewheelsontopofthecontinuoustrack.Check

that the machine carriage has not “jumped” the track.

•Removeallthreadordebrisinwheels.Checkthatthetracksarefree

of all lint, threads and dust from chalks (if applicable).

•Leveltable.

Problem Cause Correction

“Fuzz” caught under

the tension spring in

the bobbin

Poorly wound bobbin

Thread is entangled

and caught in the

hook

Carriage wheels not

centered on track

Thread caught in

wheels

Table not level

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Baby Lock Jewel BL J18 Manuale delle Istruzioni Pagina 36