Baby Lock Crown Jewel II (BLCJ18-2) Manual - Manual (Page 42)

35
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 lift 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 off and unplug the machine from the electrical outlet. Remove
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