Pinsplitter Report post Posted February 27, 2013 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. Quote Share this post Link to post Share on other sites
billymac814 Report post Posted February 28, 2013 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. Quote Share this post Link to post Share on other sites
Anne Bonnys Locker Report post Posted March 2, 2013 Before you do anything please five the bottom end a thorough clean! Quote Share this post Link to post Share on other sites
Diezell Report post Posted March 3, 2013 The feet, feet dog, Plate etc. is for a blockbinder configuration. Quote Share this post Link to post Share on other sites
Anne Bonnys Locker Report post Posted March 3, 2013 Don't think any combination of feet would cause this problem! There is a major issue with the top threading! Quote Share this post Link to post Share on other sites
