DMH

I need some helping locating information online on adjusting the hook timing on my double needle drop feed Singer 112w 115. I'm moving to a larger needle (20) and need to know how to adjust the timing for these types of machines. I have a needle bar that has no marks. The instructions for this machine says it can still be done even without marks on the needle bar, but also says I should set the stitch length to 8. I'm not sure when I change the stitch length if it actually changes. I bought this machine from a couple on Facebook marketplace that has an upholstery business, but I have not had much luck with consistent operation since I purchased it a few months ago. Everything from getting the right size table top from a swing machine supplier I would never use again to installing a simple knee lifter that turned out to be made horribly especially with this terribly made table top.

Yes I did for the most part. I realized the knee lifter I bought wasn't made correctly. The 228365 wasn't moving up and down through the 228362 like in the diagram above. I got another one and immediately saw the difference. I'm still working on some fine tuning to get it to catch the knee lifter properly. The table top I bought has been giving me machine fitment issues from the start (don't ever buy a table top from Goldstar, tons of issues with it and shipping was horrible, I'm sticking with Prizzi going forward). I'm dealing with a timing issue now as I went to a bigger needle size and not finding much info on how to set timing on these machines. I'm about to post a thread for help on that now. Thanks for checking in.

This is the knee lifter I purchased for this machine. It doesn't include the roller you mentioned in the other example.

Thanks for the information. I will make the adjustment and see how it goes. I really appreciate your assistance.

Hello, I'm looking for help with the knee lifter placement for my recently purchased Singer 112W115 double needle machine. I purchased a table top and had some difficulty finding mounts for the machine head, but finally got that resolved (I think). I installed the oil drip pan, motor and belt. I purchased a knee lift (photo attached) and lined it up with the space in the oil drip pan, but when I try to engage the knee lifter it does nothing. What am I missing or doing wrong? Where should the knee lifter make contact with the machine?

Thank you very much for getting back to me. @nejcek74 thank you for confirming where I need to place the machine to the table. I was told recently I should the placement in the pictures attached and that I can use the rubber insulator without any additional bolts to rest the machine head on.

Looking for any information on how to properly mount an industrial sewing machine to a submerged table top. More specifically, what mounts are needed if any to attach any of the Union Special 30000 and 50000 series machines. Or point me in the direction where I can get answers to question about older Union Special industrial machines on how to set them up and customize them for other uses.