Another 29-4 Problem Post

[Constabulary]

Thats why I have asked - this lever is sometime is installed the wrong way (with the bump up) or as in your case hangs down. Remove the blade spring, remove the screw of the lever but the parts back together and I´m sure this will solve your problem - see attached picture - this is how it should look.

Edited April 8, 2016 by Constabulary

[catskin]

One thing that has not been suggested concerning bottom thread tension is there may be lint or dirt under the tension spring on the bobbin holder/ shuttle. try taking out the screw that holds the little leaf tension spring on and see if there might be something under it that stops it from tightening down far enough.

[ndnchf]

Did the original poster's problem get resolved?  This is an interesting thread, but it left us hanging!

[Cascabel]

I have found that bobbin tension springs are sometimes over-tightened, which actually can cause loss of tension because the "bow" of the spring gets flattened out.   Bobbin tension springs should be adjusted in SMALL increments, like a quarter turn at a time.   This applies to ALL bobbin tension springs.

[graywolf]

Since the OP dropped the tread in the middle, I guess he either got it working or just gave up. BUT..

As an electro/mechanical tech with about sixty years experience, I can assure folks that machinery goes out of adjustment, or even breaks, just sitting around not being used. Who knows why, maybe the gremlins play with them at night? The point I am trying to make is that "It worked the last time it was used", means nothing whatsoever. Sometimes even when the last time it was used was yesterday.

[Kenbokenny]

On 4/6/2016 at 3:30 PM, vonkas said:

To start with, your machine needs to  be adjusted to factory specs. With most of these kind of problems people miss this important point. Buying a used machine, which potentially is maladjusted and without printed instructions (factory adjustment manual), is the same as a machine with missing parts. After my first expensive lesson, I subsequently have bought machines cheap because people have given up working with them, but I knew that I could get a manual. Adjusting is not trivial even with instructions. It is utterly hopeless without. Period. By the way, I have had great cooperation from Pfaff for example in obtaining manuals. Of course there are plenty of sources to be found online as well.

Would you happen to have that file on hand?