jusy purchased 2005 ducati 749s,overheating?

leaks radiator fluid upon start up about 4 tsps stops immediatly temp.reads max so far 198deg. am i overheating?

198 degrees is not overheating but if the coolant is leaking you gotta fix that. there is no way that a bike will go from 80 ( or so) degrees to 198 in mere moments, though...and what do you mean max? operating range is 160-200 degrees when warmed up, so max is NOT 198...need more info ;o)

198degrees is normal, but you need to get that leak fixed ASAP!!