About 40 minutes ago I decided I was going to sew on my 301A. I also decided that I should oil it a bit because it's been sitting for over 6 months. Even took off the 'throat plate' and removed some lint.

After putting everything together and test sewing, I kept coming up with birdnests on the backside of my sewing sample.

Tried different things - but fast forward 30 minutes.

Finally looked up the following website
http://www.sewusa.com/Threading_Diag..._threading.htm

and found my answer under "To replace bobbin case" "CAUTION" section dealing with "R" and "O".

Found out I didn't line up that little 'position finger' in the notch! :thumbdown: - Didn't know about it either.

Mystery solved :thumbup:

Bookmarking this post for myself! :)

Thank you for sharing this with us :D:D:D

Went directly to My Pages.

Thanks! I just bookmarked it too :D

Good detective work!

I learned that the hard way with my first Featherweight. Never did that again!!

I have done that too. I'm bookmarking this thread as a reminder.

Great info, thanks so much!

Thank you for sharing that. I was having the bird nest problem yesterday.

Thanks for the link. I printed it out so I can keep it with my machine, it will save wear and tear on my manual.