Purchased an Adler 167-373 and am loving it! Runs smooth, sews through anything. I do custom clothing with leather and denim and needed a real machine for pants and jackets, plus it was time to step up to heavier thread than my Viking Emerald 118 allowed.
I'm having one issue with belt loops on denim. When looking at the picture attached, when I start at the top, I backstitch with no issue and run down the loop. When I come to the end of the belt loop and cross the overlap onto the waist piece, the machine stops walking the material through, this part is circled in red. The needle does keep stitching and I can reverse, I just cannot go any more further forward. At this point I'm transitioning from four layers to two layers.
Secondly, while I wait for the previous owner who tuned up the machine to send me his copy of a more thorough manual than the 12 page one I've seen online, how can I adjust for when I get the bobbin thread coming through to the top of the material on two layers? on three or more layers, the thread is perfectly centered. I've tried the top thread tension, nothing. I've tried the top knob to put tension on the top foot, nothing.
Appreciate the help guys, this site helped me make my decision and I can tell your all into the craft.
-Dave