I was cleaning up my old sewing machine today having not used it for a while and discovered something odd about the overlocker.
It's a while since I used it for overlocking and I had some difficulty inserting a needle. I found that the tip of the needle brushes against the looper tip when the machine is operating - that can't be right, surely?
I've found an adjustment for needle height but if I back the needle off so it's higher and doesn't contact the looper tip then it doesn't make stitches because the looper misses the thread underneath. So I've put it back where it was. It does successfully produce overlocking, with no unusual noise in operation, but I feel slightly uncomfortable cranking the machine through and watching the looper deflect the needle as it goes by.
Perhaps this is normal? I have checked the needle is straight.
Tim