Mrrattle Report post Posted January 19, 2023 (edited) Hello group, I am new here and new to industrial sewing machines. I just scored a mitsubishi Du-115 for $200 canadian. It sews ok, but stitch is a bit short at 4.1mm, I have the parts catalog, I have the du-100/125 operator manual as well as a couple singer 211 manuals, the 211u157a seems closest match.. but there are several differences especially with feed regulator and reversing linkage. As far as I can find this machine should do a 5mm stitch. Does anyone have first hand knowledge of the du-115 specs? Edited January 19, 2023 by Mrrattle Missed some information. Quote Share this post Link to post Share on other sites
Quade Report post Posted January 19, 2023 He shows the min-max stitch length on the 105. The 105 and 115 share the same parts book. It seems to be a closer clone to the Juki 211 clone than to the original Singer 211. Quote Share this post Link to post Share on other sites
Mrrattle Report post Posted January 19, 2023 Thanks for the video link, i had already seen this one, looking more for details on stitch length, not sure if the 115 is limited to 4mm stitch or if it should go to 5mm, the flywheel is marked 0 to 5 on stitch adjuster so i assume it should go to 5. but no matter how i adjust the feed regulator cam it only does 4.2mm. i know 0.8mm isnt much, but if your doing a contrasting top stitch it makes a difference. i did manage to get a 5.1mm stitch in forward with a 4.2mm reverse, to do this i had to move pin #476 to the right far enough so it no longer rests on the casting (this is the hard stop for forward and reverse), with pin moved to right, the reverse lever now travels just a little higher in the forward position, so effectively the reverse lever now becomes the limit stop for forward stitch length. Quote Share this post Link to post Share on other sites
kgg Report post Posted January 19, 2023 39 minutes ago, Mrrattle said: the flywheel is marked 0 to 5 on stitch adjuster so i assume it should go to 5. The machine in the video is a Mitsubishi Du-115 which shows the markings on the handwheel to be 0 to 7 for the stitch length. In the video there is a larger distance between the 6 mark and the 7 mark I am wondering if yours had another handwheel installed at some point in it's life or the markings for 6 and 7 are worn off . kgg Quote Share this post Link to post Share on other sites
Mrrattle Report post Posted January 19, 2023 ??, machine in video is a DU-105, not a 115, the specs for the 105 show it as a 7mm stitch, the DU-100/DU-120 instruction manual list the du-100-12 and 120 and specs show 7mm stitch, but the du-115 is not listed in specs I am certain my DU-115 is a 5mm stitch machine, but why it only gives 4.2mm is my issue. Quote Share this post Link to post Share on other sites
Mrrattle Report post Posted April 6, 2023 (edited) ok group i found my answer, searched high and low and actually found an original paper manual for du-115, is complete user and service manual with parts as well. scanned but cant attach here due to size pm if you want a copy Edited April 6, 2023 by Mrrattle Quote Share this post Link to post Share on other sites
AlZilla Report post Posted April 6, 2023 1 hour ago, Mrrattle said: ok group i found my answer, searched high and low and actually found an original paper manual for du-115, is complete user and service manual with parts as well. scanned but cant attach here due to size pm if you want a copy Not that I expect to ever have one of those machines, but I'm curious what got you to the 5mm stitch length? Quote Share this post Link to post Share on other sites
