ElfLeather Report post Posted 8 hours ago tl;dr - what's the order of troubleshooting for skipped stitches? I posted a little while ago about that Pfaff 34-5AL I bought the other week, thank you to everyone that gave me info. I replaced the 3-phase clutch motor with a servo, gave the machine a cursory cleaning, oiled it, and crash-coursed my way through birdsnesting issues. Eventually figured out that the tension assembly wasn't seated right, it wasn't releasing right, and my threading was a little off. After fabbing a replacement tension release pin and reseating the tension assembly, a few minutes messing with the upper and lower tension and no more birdsnesting. Now that the birdsnesting is resolved, I'm getting issues with skipped stitches and failure to feed properly. I don't know if these are related issues. I'm testing with pigmented goatskin and nappa lambskin with 70 tex polyester thread The feed issues look like - I'll sew maybe 10 or 20 stitches, everything looks fine, then the leather just stops feeding. This system comes with a wheel feed mechanism, which I'm unfamiliar with. The skipped stitches are a consistent problem, maybe every 5th stitch. Sometimes 2 or 3 in a row. What are my options for troubleshooting look like for feed issues and skipped stitches? Quote Share this post Link to post Share on other sites
Constabulary Report post Posted 5 hours ago (edited) reg. skipped stitches - is the needle insert correctly with needle scarf toward hook tip? Maybe needle bar set a bit to high (check needle hook timing)? Hook tip probably a bit to far away from the needle? If you are looking for timing values or an English manual look for the Singer 31-18, the machine is very similar and has wheel feed too. Not sure how similar the wheel feed mechanistic is but that's the best crossover reference I think. Needle hook timing values are the same. EDIT: I have this manual: Singer 31-17,-18,-21 Instruction Manual.pdf Edited 5 hours ago by Constabulary Quote Share this post Link to post Share on other sites
