Originally Posted by
callen
Are you making sure you loosen ALL of your tensions before pulling your thread thru? Either that or you may be using, excuse the phrase "cheap" thread in your serger. Your tensions, either dials, levers or whatever must be turned right down to 0 to allow your thread to pass thru the threading channels. Hope this helps.
I've never had to do anything with the tensions. I just make sure my knots are really tight and cut off the excess threads from the knots. I leave about a half inch.