Hi Lneal,

Yes, your sergers timing can be knocked out. And if you hit a pin, that could do it. If it isn't forming a chain after you've threaded it properly, that would be the next thing to check. Do you have a repair person you can trust to give you a free check? They should be able to quickly look at it and tell you if it's out of time. It can be expensive to have it repaired, but it should be included in the price of a regular "service" or "tune-up," which can be anywhere between $50 --$90.