SOURCE: Bobbin Carriage clanking noise, yet the machine sews fine??
If your bobbin area is making a noise, then do NOT sew with the machine until a reputable technician looks at it. You may have thrown something just a little off line - not enough to affect sewing NOW, but it could easily cause troubles down the line.
I suggest you call ahead and talk directly to the repair person - not to the sales person. Ask if you can bring in the machine while he/she is in the shop so they can listen while you run it.
You aren't trying to cheat the store out of the repair charge, just ensuring that the problem is diagnosed correctly.
You paid lots of money for this machine - it deserves good care.
SOURCE: bobbin case case keeps jamming
I am having somewhat the same problem with the exception that my needle did not break. I've cleaned and oil, but the bobbin case and projection positioned spring is not communicating to allow sewing to continue. The thread keeps jamming and the bobbin raises up the plate. So, what else am I to do?
SOURCE: needle hitting bobbin case model 750
This is a timing problem the hook timing needs adjustment, and possible the needle timing also
SOURCE: needle hits bobbin case...
If the needle hits the bobbin case the are only 2 things that could be wrong. Lets hope its the easy one, there are more than one length of needles, if the needle is to long or it is not all the way up in the neelde bar, the needle will hit the inside of the bobbin case. Now if that is not the problem then the machine is out of time. ALWAYS check the easy stuff FIRST.
SOURCE: The thread is bunching up
Your problem stems from the faulty foot lever mechanism. It's coupled to the upper thread tension control which only provides tension when the presser foot is in the locked down position.
If the presser foot won't positively engage in the down position, there's no upper thread tension and the thread bunches up below. Everything else stems from there. If the needle has hit the bobbin case too frequently then the bobbin timing may also be slightly out and the needle itself will be damaged and won't pass straight through the fabric; it only takes a tiny deflection from the vertical as it passes through the workpiece for the needle to flex and hit the bobbin case.
In summary, your machine is in desperate need of repair and adjustment. You haven't stated which exact Singer model you have, but they are usually easy to get servicing manuals for or you can take the machine to a sewing machine servicing specialist. Most singer spare parts (even for 100 year old machines) are usually still available fairly cheaply from a variety of sources, just enter "Singer spares" into your search engine to find suppliers.
To prevent re-occurrence, clean the mechanism regularly and lubricate it as directed by the manufacturer using sewing machine oil. Depending on how often you use the machine, do (or have done) a more thorough service periodically to check the timing and also that all mechanism screws remain tightly fastened.
I hope that my reply has shed some light on your problem and enables you to decide what to do next. Please take a moment to rate my answer.
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