Hello I just got added on as a member today. Thanks in advance to all that have posted great information on here to make the learning curve a bit easier.
I am a sound engineer in the film production world and have been designing products over the years and making a few prototypes here and there out of leather, nylon, and neoprene with plans to one day sell a few of them. I bought a Juki DNU-1541S new about 8 years ago, and have used it about 8 times. After jamming up the machine several times while trying to figure out how to use it, I finally got it to the point where it no longer worked due to the needle hitting the hook assembly. I wanted to have a technician come out and take a look, but it seems really hard to find one in Atlanta who is available, so I am looking to see if I can figure out how to fix this thing myself. I am somewhat mechanically inclined, which can be both good and bad.
After watching a lot of Youtube videos and learning more about the machine and how to sew, I think I have found that my problem is the position or timing of the opener in relation to the hook assembly. As the hook assembly rotates, areas of the outside edge get wider and narrower. As the wider areas rotate past the opener, the opener stops it. I have attached 2 youtube videos I made to illustrate the problem.
https://youtu.be/lcTTXr9hn4I
https://youtu.be/NrYRmTvfD6g
I have the manual and the tools I need. If anyone has any insight into what I am doing wrong, I would love your advice.
Thanks