Vintage Singer 99k Not Using Bobbin Thread

I'm new here and hoping for some help or guidance. I have just bought a Singer 99k. I think it's a Simanco 33663. I've given the machine a good cleaning and oil, I'm happy with how it's cleaned up, all seems well apart from something that should be happening with the bobbin thread.

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When I attempt to sew, the top thread does just what it should in respect that it goes around the bobbin case and pulls up the bobbin thread. So far so good. :o)
But then when I attempt a few stitches all I get is the top cotton in place, (these stitches pop out because they are not anchored.) There's no sign of the bobbin thread :o( I've read some trouble shooting threads and used a new needle and adjusted the bobbin tension.

I don't know much about these machines yet and was wondering if it's a timing issue, but given that the top thread collects bobbin thread everytime, I thought maybe timing is OK? I've looked underneath the machine and can see where the metal part catches the top thread and takes it round to the bobbin, but I can't work out which bit might involve connecting the bobbin thread! I thought a vintage machine would be easy to maintain on my own!

Any advice would be very much appriciated.
Many thanks in advance :o)

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October 15, 20150 found this helpful

Singer has an email and phone "contact us" site that might be able to help you. Website:

www.singerstore.com/.../

Also, a local sewing machine repair shop should be able to identify the problem and provide an estimate for repair.

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October 16, 20150 found this helpful

Thank you :-)

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October 16, 20151 found this helpful

You can take the machine to a repair tech - it's the bobbin gear (or the rubber 'belt') and needs to be changed and the repair tech will have access to the part - probably has a tub full of them:) This applies to 99Ks that are hand crank or electrified - the workings are the same on both types. I do a lot of refurb and repair on these here in Scotland for my Sewing 101 students.

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There is a free download available online for servicing the hand-cranks (99K) and treadles (usually the 66K) if you're feeling adventurous, and spare parts can be purchased once you know the name of the part you need. The first link is for the service manual - be prepared it takes some time to download all of the sections but it's well worth the time! The Tools For Self Reliance charity group refurbishes non-electric vintage machines and then donates the machines to be used by sewing business entrepreneurs - you will be able to download without having to pay, join, or pledge a machine donation but if you are interested, all the info you need is there as well. The manual at the link below is aimed at Singer vintage non-electrics and you will find it fascinating and easy to follow:

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www.tfsr.org/.../

This link takes you to a parts supplier - he carries an amazing selection of spares for vintage Singers and is very reasonably priced:

www.tandtrepair.com/

Word of warning - these vintage treasures are addictive!

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Anonymous
October 23, 20150 found this helpful

BRAVO!! ... for your wonderful answer! I'm also addicted to old machines - and just ran into this very thing on a 99K. WHAT a good little lump of pig iron, though .... All cleaned, serviced, oiled and adjusted, it's so quiet that you can't hear the little thing running and it sews extraordinarily well. I'm on to a 221 Featherweight - and then a TOTAL refurb of a Singer 66 treadle machine. Good thing I have a Free-Westinghouse to SEW on whilst I work over these Singers!! Hahaha!!!

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August 23, 20180 found this helpful

Make sure cotton is coming from bobbin anti clockwise, try that

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