I bought a used serger (14U85) off of Craigslist and got it Thursday. It worked yesterday. Then, I tried to disable the cutting thing yesterday, and now I think I may have messed up the timing. When I put the cutting blade back it either doesn't move (and therefore doesn't cut) or it takes about 3 stitches and then grrrrrs like it's caught. If I move the cutter thing to the back where its' supposed to go when it's disabled, it grrrrs again.
I'd so so love any advice.