billymac814 Report post Posted October 14, 2010 I got a Boss last week and just recieved the correct needles for my thread for what I'm doing. My manual shows the thread going around the secondary tensioner once, the one online says to go around it all the way. My question is; the secondary tensioner is made up basically of the two rounded disks with the spring on top and after a few stitches the thread pulls in between the disks and is basically wrapped around the bolt that holds it together. Is it supposed to do that or should it be outside on the lip in between the two disks? That should make sense to anyone who has a Boss, if not I can get pictures of what I mean. Quote Share this post Link to post Share on other sites
celticleather Report post Posted October 15, 2010 The thread is supposed to run between the discs (around the bolt), and the pressure of the spring determines the tension. I was having problems with the thread popping out from between the discs, particularly with heavier threads, so I followed the online method and wrapped the thread once around the discs. This fixed the problem, but needed a little less pressure on the spring. Quote Share this post Link to post Share on other sites
billymac814 Report post Posted October 15, 2010 Ok, thats good then, I was trying to keep it on the outside between the lip similar to the primary one looks, but it kept getting pulled in between, after fixing it 100 times I started thinking maybe its supposed to be around the bolt. Thanks. Quote Share this post Link to post Share on other sites
Denster Report post Posted October 15, 2010 With really heavy thread like 416 it sometimes helps to just bring the thread between the discs without wrappng completely around. With lighter thread make a complete wrap. The thread will be around the bolt with most of the tension provided by the pressure of the discs on the corssed over thread. Quote Share this post Link to post Share on other sites