Originally Posted by
Patricia Drew
I have a Juki DX-7, which is in many ways similar to the F series Jukis. My machine made this same rubbing/scraping noise after only a few months' use. Even though the operating manual has no instructions regarding oiling, I was advised by a member here on QB to remove bobbin and bobbin case, and apply oil around the small metal circle under the bobbin case. It did the trick, and I now oil that area regularly. It's very unfortunate that Juki has not included that information in the manual.
Metal circle under the bobbin case!! I know just what you are talking about and I have never oiled that! I bet there’s a ton of friction there when it gets hot. Ok that’s going to be my first step. Thank you 🙏!!!! You are right that the manual doesn’t mention it. I even downloaded the maintenance manual for that model, which has a lot of adjustment measurements and guidelines but nothing about basic oiling! Thank you again -and even if it doesn’t fix it- thank you so much for your suggestion. 😊