WELL HERES THE DEAL MY 06 YZF 450 WONT RUN IT HAS SPARK AND IS GETTING FUEL...BUT IT JUST WONT START AT ALL AND THE OTHER WEIRD THING IS THAT WHEN U PULL THE CLUTCH LEVER WHILE IN GEAR AND TRY AND START IT THE WHEELS STILL TRY AND TURN SO ITS LIKE THE CLUTCH ISNT EVEN WORKING I DONT KNOW IF THIS HAS ANYTHING TO DO WITH IT I RODE IT A COUPLE MONTHS AGO AND WHEN I PUT IT IN THE GARAGE IT WASA FINE BUT LIKE I SAID WHEN I WENT TO START IT NOTHIN HAPPENED SO I PULLED PLUG AND HAVE SPARK AND IT APPEARS TO BE GETTING FUEL BUT I WONT START I EVEN TRIED TAKING OUT THE FILTER AND SPRAYING A LITTLE STARING FLUID AND STILL NOTHING PLEASE HELP I WANT TO RIDE...THANKS

 

i had this problum with mine, the clutch plates were stuck togather so now when i park it for long time periods i pull the cluch and tye it back ,what happens is the oil dont cover all the plates when it sets and they just flat stick togather, so check what i had to do whas pull the clutch apart and free up the plates hope this helps