Help me diagnose my ferdco?

[CowboyBob]

Have you taken the end cover off(needlebar end) & oiled everything lately?

 

[LumpenDoodle2]

I've just bought myself a Juki ls-341, which had been serviced only in someone's imagination.    Among many problems was one of the machine sort of seizing up as the needle was coming down.     I finally traced it to, of all thing, a loose screw on the reverse lever.  

The lever was moving slightly out of position, and stopping the whole machine.  Once I set its postion and tightened the screws, all was well.

(Only took a day to work that problem out, I must be getting good at this :-()).

[Gregg From Keystone Sewing]

Did you check the tire pressure?  Bring it on in, we'll be happy to take a look at it, and sure to remind us it's covered under warranty for sure.  Head only is fine.  Just try to let us know when you plan to come in.  Or don't, we'll take a look either way.    

[JerseyFirefighter]

 

Did you check the tire pressure?  Bring it on in, we'll be happy to take a look at it, and sure to remind us it's covered under warranty for sure.  Head only is fine.  Just try to let us know when you plan to come in.  Or don't, we'll take a look either way.    

Thank you Gregg. I seemed to have worked out the needle stoppage issue, however there is still something a little off. I got hammered at work and couldnt mess around with it too much this week. I'll give you a call on Monday to see if the issue is anything that can be an  "aha" moment for me to tweak. If not I appreciate it and will bring it down. Have a great weekend!

[Uwe]

14 hours ago, JerseyFirefighter said:

I seemed to have worked out the needle stoppage issue

You're gonna tell us what was wrong and how you fixed it, right?

 

Edited August 27, 2016 by Uwe

[JerseyFirefighter]

On 8/27/2016 at 0:14 PM, Uwe said:

You're gonna tell us what was wrong and how you fixed it, right?

 

So I ended up checking all the exterior screws and making sure they were tight. A few days prior to the issue I blew out the bobbin housing with compressed air and oiled the machine. I suspect that what I had thought I was blowing out of the bobbin housing pushed it towards the back on top of and behind the bobbin case. After pulling the bobbin and blowing it out again I had found a few sizeable pieces of thread had freed itself. I rethreaded the machine and swapped to a 207 instead of a 277 (<--shouldnt be relevant but I did it anyway) and tried a sample piece. It started to sew without the needle hangup and has handled a few straps almost seamlessly since then. My observation of what was still kind of off was a slight click as the needle raised back up after the stitch. It's not as prevalent as the needle stoppage, but when you put a fair amount of time on your machine you get to know the ins and outs and sounds it makes. 

 

I did note that the SPI lever is loose and has fallen out of reverse on a project. That is still something that I have to address.