brushew93

Your last paragraph was a complete “AH-HA” moment for me. I’ve never seen it explained that way but now it makes complete sense. Thank you!!

Thank you kgg for the download links!! And thank you Northmount for moving my post to the more appropriate section.

I can’t find any info on how to reset the stitch length dial on my Techsew 2750. The actual stitch length does not correlate at all with what the dial says it’s suppose to be. I tried changing the pressure of the pressure foot but that didn’t make a difference. Anyone know how to tackle this? I know there is a JUKI machine comparable to the 2750, but I’m not sure what model Juki it is. If anyone can tell me that, maybe I can find a service manual to help. Thanks!

@Constabulary Techsew called me and had me adjust my stitch length dial. I ended up loosening the middle screw, then holding down the reverse lever, and setting the dial to 1. That fixed things for me. Doesn't make a lick of sense to me, but it worked so I'm not complaining!

@kgg, @Uwe - This morning when I went to take a video for Techsew, I discovered a brand new noise the machine is making. This was NOT happening yesterday, and no additional adjustments were made! The noise occurs just as the needle reaches its highest point. It does NOT occur at all if the presser feet are lifted.

You are correct @kgg, the feed dog and presser feet are smooth. I did try various weights and finishes of leather with no change. The reason I used the smooth, light leather for the video was to make it easier to see the threads and stitching motion. I did get an email back from techsew, requesting a video using slow, manual motion with no needle or fabric. I will send one this morning. Hopefully they will be able to diagnose the issue. I will post their suggestion and the result here.

Thank you for the Upload tip kgg! I have called and emailed Techsew and sent video, pictures. The problem is, I don't always hear back from them. I'm sure they are busy, but I just want to be able to use this machine and getting timely advice and/or answers to my issues are extremely helpful. The videos show that I now have the machine stitching, but the stitch length is clearly not the same as what the dial is set at. If I can fix that issue, I think I'm good to go!

Thank you Uwe and Kgg for your response. I have video for you to look at, but I can't get them to upload here. Suggestions? To answer your questions, right out of the box, I had problems with the machine. I wonder if it sustained damage in shipping from Toronto to Idaho, although there was no visible damage. The first thing that broke was the little stud on the thread tensioner. Techsew sent me a new tension assembly, and then I was able to sew with it, but the machine didn't sound right, and really didn't run smoothly. It jammed frequently, and I had to reset the needle to hook timing frequently. Then, the bobbin opener broke off. While I was sewing, the machine suddenly jammed and made a noise that did not sound good. When I removed the bobbin slide cover, I saw the finger of the bobbin case opener broke off and was jammed in the space. Techsew sent me a new piece and made me videos with very clear, detailed instructions to remove the remaining part of the bobbin opener and install the new one. I am convinced this was a factory defect; the piece actually broke in half at the bottom of the finger. After replacing the piece, the machine ran better than it ever had; it was running quietly and very smoothly - except it would only stitch in place. So, this is what I did, in order: I checked the feed dog height; no adjustment needed, as it was sitting exactly 1 mm higher than the throat plate. I checked the longitudinal motion of the feed dog and it was moving correctly, front to back. The needle was perfectly centered as it entered the feed dog, and was in correct time with the feed dog movement. No adjustment needed, thankfully, because I don't know how to make these adjustments I checked the height of the needle bar and it was off, so I adjusted it to the exact height stated in the Techsew manual. I checked the timing of the needle and hook, which was perfect. I did have to adjust the clearance slightly between the needle guard and the needle. I watched Uwe's video on YouTube for the timing of the bobbin thread release. I took a video of my machine timing and attached it here; I made no adjustment, because it appears to be okay, but please let me know if it looks off to you. I checked the threading of the machine, the thread take-up spring, and the tension of the upper thread and bobbin thread. No adjustments made. This morning, I adjusted the stitch length adjuster. Now, it will stitch, but the stitches are not the correct length, and it is not in sync when sewing in reverse. What I have NOT adjusted (because I don't know how) is the position of the needle bar frame, the inner and outer presser foot height. I live in a very rural area, and bringing it to a repair person is not an option, unfortunately.

I just replaced the bobbin opener on my machine, and had no problems doing that. Then I went through and made sure all adjustments were at factory settings. Now, when I try to sew, the stitch length is not working. No matter what length I set it to, it is stitching as though it is set to 0. I adjusted the knob, and the still have the same problem. Other than not stitching properly, it sounds good - no weird noises, no binding issues anywhere. I am using a new needle and new thread. I am super frustrated with this machine - I've had it for 2 months and haven't been able to use it because there is always something wrong with it! Can anyone figure this one out?