sappire 835 is suddenly giving me FITS! i'm trying to sew a simple pair of stretch pants,& the top thread keeps breaking.i have....changed thread,completely dismantled the bobbin &changed that thread,re-threaded the upper thread a dozen times , am going to try a diff. needle next.just bought it in june & tho i haven't had much time to sew,what i have done i was very happy with.if anyone has any suggestions, i would appreciate it.don't want to take it in if i don't have to!
thanx in advance,dar :-D

Are you using a ball point needle?

I was having the same trouble with my little Viking Daisy when I was sewing fleece.

http://www.quiltingboard.com/t-162661-1.htm

Called the shop and they said that since it was stretchy material I should use a stretch needle. I had never heard of such a thing but ordered a few to try. Will let you know if they work. They also said thread could be old but I pulled on it by itself and I could not break it. I think the needle is the problem. Perhaps others have more suggestions.

Can you just call your dealer? I usually can get an answer over the phone from mine

The stretch needle is the ball point needle. It is rounded and goes between the knit fibers.

When my machine acts up like that I turn it off and walk away for a few hours or overnight. Don't know if it's me or the machine that needs a break but it usually works when I come back.

I oil my thread just a tiny bit ... Silicone oil... Might help!

make sure your presser foot is up when you thread your machine.

thank you for your fast replies! will try all of your suggestions & let you knowe what hasppens.
thanx again so much,knew i could depend on all my friends on the board!!!
dar

sounds like the needle, get a ball point needle