A couple of things to try,
Flick the kill switch on and off ten times or better yet pop it off and clean the internals with some contact cleaner
Do the same with the ignition - on and off I mean
Check all electrical connectors are hooked up properly, clean them with contact cleaner and check that each wire is connected. Some people like to pull the connectors apart by grabbing the wires and it only takes one to recede back into the connector block to break a vital connection.
Unscrew your spark plug caps from the wire that connects them to the coils. Clean them with contact cleaner and also check they fit nice and tight onto the spark plugs. Clip 3-4mm off the wire and screw them back on.
Spark - remove a plug check for spark.
Gas - clean carb, set float height, high octane pump gas
Air filter - nice and clean
Rule #1 FULL CHOKE - NO THROTTLE
If you play with the throttle whilst trying to start a reluctant bike you will just flood it and unless you leave it for at least a half hour you are wasting your time, energy and winding yourself up for nothing!
If the bike starts and then stops a few times or starts on just one cylinder this is normal for a bike that has been sitting, if it wants to idle after this then great but still don't **** with it!
Leave it to warm up then give it a slow gentle rev.
People just can't resist that throttle, it is like a brake lever when your wheel is out, a dick magnet!
Seen it as million times
_________________
Stop sniffing my ring
MC28SP
KLX110 hotrod
CAG Minimoto
1997 WRX
21 Speed Bike
162 Smurfs