Hooiam

Just a thought, I'd try some PB Blaster penetrating oil, I've used it in auto work for decades, it's the best stuff I've ever seen (next to a heating torch lol.) If it will break rusted bolts on an exhaust system loose, it should work on a sewing machine that's been kept out of the weather. Just spray it and let it soak in for an hour, reapply again and see what happens.

I watched a couple of videos on YouTube about on a RB-5 which looks spot on like your machine, I'm pretty sure he covers the adjustments you're speaking of, and more. The 2 videos are like 3 hours but well worth the watch. Just skip passed the parts you know. I think the info you're looking for is in part 2. Hope this helps. You stole that machine lol, I thought i got a deal on my RB-1 @ $250 with table and clutch motor.

Thanks for the replies. After reading what you guys posted I had another look at it, turns out it was a small 90 degree L bracket, it's called a "needle bar rock frame position bracket" acording to SouthStar Supply's parts breakdown diagrams. I just loosened it up and repositioned it a bit, and voila scrubbing gone. Now i just have to figure out why the hook sometimes pops to wrong side of the thread release finger. It also pops the safety clutch when this happens. Just a little preface on parts I've already replaced( I should've added that in th OP.) It has a new tesion assy, bobbin case, a servo motor, and I've made sure the timing is right, there are some good videos on YouTube. Thanks, Shawn

My first post, I've recently aquired my first industrial machine a Cnsew 206RB1. I have an issue I can't seem to figure out, it makes a scrubing noise under the bed, close to the needle plate , and feed dog area. I can't find anything under there that appears to be touching while I cycle themachine with the hand wheel, but the noise is still there. Is there anything you guys may have come across that may be the cause? Thanks in advance for any help.