Bernina 121

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Hi folks

Just got this and am having a problem with it. No matter what I do with the
 tension settings, when it lifts the top thread up it just doesn't bring it
 up quite far enough, and snarlup soon results. I've checked & corrected th
e bobbin tension. I've got the upper tension to work, it was failing to gri
p the thread. Still no joy. I note the upper thread from lifting arm to nee
dle goes slack when the lifting arm goes down. What's going on, what can I  
do?


NT

Re: Bernina 121
snipped-for-privacy@gmail.com wrote:
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(Disclaimer: I do not know your machine)

Are you sure that model number is correct?  Bernina does not seem to  
list it:
https://www.bernina.com/en-US/Support-US/

    If you have the user's manual (absolutely necessary, IMHO)  
re-thread the needle path FROM SCRATCH.  Do not assume you have all  
the hooks and loops threaded, do it again.  You wrote "I note the  
upper thread from lifting arm to needle goes slack when the lifting  
arm goes down."   That sounds to me like a problem with the little  
take-up spring, usually the next thing after the tension disks. (But  
again, I don't know your machine, I'm a Singer sewist.)

   Install a NEW needle, making sure it is installed  
right-way-around.

    Thread the bobbin and the needle with different color threads,  
to be sure you know which one is causing the problem.  Sew a test.

    If it has not been cleaned/lubed in a long while, take it to  
your nearest shop for a thorough servicing.

HTH

Beverly





Re: Bernina 121

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I 2nd Beverly in her suggestion of changing the needle.

Bottom thread going wrong normally means problems with top threading.  
Change the needle check the threading and if it's still odd go to a  
reputable service person.

--  
Claire in Montreal FRANCE
http://claireowenperso.free.fr

Re: Bernina 121
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Sprechen Sie Deutsch


https://www.youtube.com/watch?v=_1YQJDK03y4


   John T.



Re: Bernina 121

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Nein.


I hope that helps OP, s/he is posting from Great Britain.

:-)

Beverly  


Re: Bernina 121

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 Helping to confirm the model  -  I wonder if the same machine
 has a different make/model number for North America ?  
This link seems to say that Bernina did make a machine for Husqvarna -
https://www.occaphot-ch.com/bernina-oldie-modelle/bernina-modelle-kl-125-121-1950er/

    John T.

Re: Bernina 121
On Monday, 17 July 2017 22:36:36 UTC+1, tabby wrote:

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he tension settings, when it lifts the top thread up it just doesn't bring  
it up quite far enough, and snarlup soon results. I've checked & corrected  
the bobbin tension. I've got the upper tension to work, it was failing to g
rip the thread. Still no joy. I note the upper thread from lifting arm to n
eedle goes slack when the lifting arm goes down. What's going on, what can  
I do?
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Sorry for not getting back sooner, life has, how shall I say... overtook me
.  

Yes it's a 121, the huge '121' printed on it gives it away ;) Bernina intro
duced the 121 in 1944, and I gather have long been happy to never mention i
ts existence. The 125 they seem happier about, which was a much improved de
velopment of the 121.

I have never taken a sewing machine to a dealer and never intend to. If I c
an't do what they can, something is very wrong. And an old basic 121 is not
 worth it anyway.

It works perfectly now, though a little mystery still remains. The problem  
was with the upper tension disc assembly. No matter what I did with it it w
ould not behave unless I removed the tension relieving washer, so in the en
d I did so and it works perfectly. My best guess is that at some time it ha
s been reassembled wrongly. I have the manual but it's only a user manual a
nd doesn't touch repairs.

The twist in the tail is that despite working fine it probably will go for  
parts for 125s. Its mains lead is needed for a 530-2, a far more valuable m
achine, and the leads seem to be unobtanium. I got both machines for next t
o nothing, and I reckon neither had been lubricated in a couple of decades  
at least.

Thank you for the suggestions. The 530-2 is proving harder to sort out, a c
ouple of bits of the mechanism are still jammed solid despite paraffin, oil
 & baking it in an oven. When I get suitable time I'll try more determined  
solvents.


NT

Re: Bernina 121
snipped-for-privacy@gmail.com wrote:
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<snip>
  
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Interesting attitude.  Do you do your own brain surgery as well?



Re: Bernina 121

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Spat tea onto keyboard laughing!!

--  
Claire in Montreal FRANCE
http://claireowenperso.free.fr

Re: Bernina 121
On Friday, 11 August 2017 05:27:48 UTC+1, Claire in France  wrote:

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I don't understand people that argue for their own inability. As expected I
 fixed the machine. Sewing machines are not normally a challenge to repair.


NT

Re: Bernina 121
On Friday, August 11, 2017 at 10:41:45 AM UTC-5, snipped-for-privacy@gmail.com wrote:
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 I fixed the machine. Sewing machines are not normally a challenge to repai
r.
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You opened the door.......................


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