Today a Janome Horizon Memory Craft 7700QCP was brought to me for an annual service, and I noticed that there was a broken spring, which left the thread drawing lever to lay down and make a scraping sound as the machine rotates. I’ve noticed this same problem on 3 machines in the last few months, and with the volume of sewing machines that I repair, I don’t think it’s cause for alarm, but if your Horizon is making a scraping sound, you should bring it in for service.
In this article’s image you can see the thread drawing lever, which I colored orange. The spring that holds the thread drawing lever up off the hook is colored magenta. The spring is actually hard to see, and if it is broken or missing, you may just see a little hole where the spring is supposed to attach to the thread drawing lever.
I’m not really sure what the thread drawing lever does, but almost all Janome sewing machines have this lever. Because of that, this problem may not be isolated to just Janome Horizon machines. If you have a machine where the thread drawing lever is laying down on the hook, you should bring it in for repair.