Coolant Leak....Help??

[Aceman]

I just bought a 250r and started it for the first time today. It's leaking coolant out the top of the head near the spark plug. The head has Pro Cross written on it and I assume it has a dome in there. Is there an oring on top of the dome that can be changed out to fix this or can I get away with stop leak? When I ran it for 2 minutes I noticed whitish smoke coming out of the exhaust, but it ran perfectly. Any help would be appreciated, I'm new to 250r's.

[Aceman]

Whoa......don't everyone respond at once!!:blah: :D

[QuadRacer041]

tony, all R's smoke when they are cold that doesn't mean coolant is leaking into the cylinder. I never say coolant leaking from there before. But yes there is o rings in there. That is an LS Sleeve 310 kit you can buy the o rings from them im sure. When they did the bore job for me they didnt send a new o ring for the dome so i re used the old one. I wouldnt use stop leak.
Call me if you have any problems.
How do you like it otherwise?