Smr 450 starting problems

Hey last year bike was already having problems starting so parked it for the winter. Bought new battery last night charged it, bike is turning over but not starting. Anybody have any idea what it could be ?

Clogged up pilot/idle jet, very small orifice, blowing air or spray into it will not open it up, get a new jet of clean the old one carefully with copper wire to keep from making the orifice bigger.

Do I need any special tools for this and where is the jet, kind of greener with these kind of things

https://www.google.com/#q=how to take apart a motorcycle carburetor