The big knob on the right that moves the needle up and down does not move. What could be causing this and how can I fix it.
Thank you so much
If the Handwheel (big knob) is moving but the needle is not moving, you need to engage the clutch ........depending on the model
- push handwheel in to engage, pull out to disengage
or
- if there is a smaller wheel inside the handwheel, tighten to engage, loosen to release.
BUT if all is jammed........
Check for threads that are jamming the motion of the hook around where the bobbin case is
If your bobbin goes in from the top, remove the needleplate and bobbincase remove thread jams by gently rocking handwheel back and forth until released.
Clean around the hook race with a rag moistened with methylated spirit, surgical spirit or similar, then reassemble.
If front loading, open the door for bobbin case area, release 2 retaining clips holding the collar on (take note of the position/orientation for when you re-assemble....even take a digi photo to refer to !?!).....
......then just do jam removal & clean out in much the same way as for the top loader.
In all cases, don't force too much or be too brutal, gentle and patient works best, try to judge where the jam is caught and work with it slowly......you may need to cut jammed threads, just ensure all are removed before you re-assemble.
SOURCE: knob not moving
Check the bobbin winding feature to see if it is disengaged.
If there is thread jammed in the bobbin area, the wheel will not move.
Turn off the machine and remove the needle and presser foot.
Remove the bobbin. Open the needle plate and remove the bobbin case and clean the area from lint and thread that may have accumulated there.
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Mechanics don't engage at all. It's completely locked up, with no threads caught in any place. Hand wheel and clutch knob do not connect, but the clutch knob repeatedly loosens.
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