Ha master of the boat anchor

[Cursnfurs]

Slash now back to it's original purpose. Which is a singer slant needle 404 thread injector. After 2 full days of swearing,cussing and just ready to hook it up to boat rope. Today for 2hrs of more work at it. I will now call it the tamed beast. " fingers crossed" lol. not sure what I did but hey

[Klaussinator]

I've got one - great machine.
What seemed to be the problem???

-Klauss

[gmcttr]

If it's of any help...here's the Singer 401 Class Service manual.

[Cursnfurs]

not sure what was going. top stitch looked awesome but a tad loose. the underneath fabric was quite chaotic. bobbin thread was just going length wise and never got pulled into fabric to make a stitch just hanging there length wise in the mass of loops,tangles etc. So poured over videos tried cleaning in and around bobbin area. re-threaded everything for the hundredth time. little more cussing lol. not sure what the cure was but finally did full stitches across a stuff sack 4 times and called it quits for the night on a good note

[Klaussinator]

Not sure without seeing the thread tangle, but I wonder if the machine needs to be timed? If you're sure it's cleaned and the tensioners are working properly, you might want to watch the needle interacting with the bobbin assembly while turning the machine over by hand - timing is critical.

-Klauss

[Ramblinrev]

Not sure without seeing the thread tangle, but I wonder if the machine needs to be timed? If you're sure it's cleaned and the tensioners are working properly, you might want to watch the needle interacting with the bobbin assembly while turning the machine over by hand - timing is critical.

-Klauss

More likely the top thread tension is too low. Increase the tension on the top thread. Leave the bobbin tension alone. Don't mess with the bobbin, unless you already did. What you are seeing on the underside of the fabric is the top thread hanging in loops. The most likely issue is top tension.

Timing problems would more likely result in missed and skipped stitches.

[Klaussinator]

... bobbin thread was just going length wise and never got pulled into fabric to make a stitch just hanging there length wise ...

This is what made me think skipped stitches. ^^^

But Rev, you're the expert here and I know I'm not I like to dabble with anything mechanical, but it'll be a lot of years before I know half what you do about sewing machines.

-Klauss