Pfaff 145 serial number location

[dikman]

Don't apologise, we all have to start somewhere, and the subject of industrial sewing machines can be quite complex (initially, at least). I'd still like to see a closeup of your threading around the tension assembly.

The number of holes used on the post and the bar next to the tension unit can vary, depending on how much extra "pre"-tension might be needed. It's often a trial and error thing to suit the materials being sewn, but normally you would only use two holes on the post and one or two on the bar.

[Pintodeluxe]

Look at item # 4 in the diagram above.  See how the thread is supposed to continue horizontally from the tension discs to the check spring assembly? 

Your original photo doesn't do that.  Yours incorrectly goes up and around the pin.  

I know many old pro's that thread their machine that way, but it's not standard.  

[dikman]

And it doesn't look like it goes over #3? I can't be sure from the first photo.

[Rikster]

I will review it and get some close ups when I can get back out there.  This thing is so heavy I haven't been able to bring it in from the garage and up the stairs. I bought this from a business that sewed leather in their trade - they had multiple different machines and were downsizing.  I was/am afraid to rethread it because I figured they knew what they were doing and I know that I don't.  I wanted to play a bit before I screwed it up rethreading.  I ordered a bobbin winder and bobbins, and when I attach it and can play for an hour I will attempt to rethread.   Worst case is I bug you kind folks to walk me through threading it correctly.  Thank you for the guidance.  I look forward to being able to do the same.

[dikman]

Don't be afraid to ask, you'll get the right advice here. Threading isn't difficult but some of the youtube videos aren't right so if you're not sure ask here.