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Posted

i have a Pfaff 335 clone machine which has started to bunch/loop the bottom thread.

The machine has been moved and in storage for 3 months until I put it back in action.

All solutions I have read say its usually from incorrect threading or wrong top thread tension.

I have checked all this, tried different tensions, cleaned the tension discs.

Sometimes I get a clunk noise after a few inches sewing.

Also it doesn't seem to pick up the bobbin thread very well when loading a new bobbin.

Has the timing gone out or something?

pics of problem below.

post-31457-0-03806000-1361999423_thumb.j

post-31457-0-00617900-1361999447_thumb.j

post-31457-0-24215300-1361999476_thumb.j

post-31457-0-52496000-1361999545_thumb.j

  • Members
Posted

I think its probably your top thread that's bunching on the bottom. I can't really tell from the pictures but if there's any doubt load the bobbin with a different colored thread so you can see what's going on. It can be from not enough tension on top.

  • Members
Posted

Before you do anything please five the bottom end a thorough clean!

  • Members
Posted

Don't think any combination of feet would cause this problem! There is a major issue with the top threading!

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