Impossible to kick start after sitting for a few days..

[kelley350x]

I have a 08 450, if I start it everyday or two it starts on the first few kicks without a problem, if I let it sit more than a few days it will not start with the kick starter.. I can pull start it by pulling it behind my 4 wheeler. I will pull it at about 15 mph, dump the clutch in second gear and it fires up within 5'.. Once it fires up I can instantly kill it and start it right back up with the kick starter..

Does anyone have any idea what may be causing this?

Thanks

[awalker5171]

Sounds like valves need adjusted. No clue why it only occurs after sitting.

[gardwadt]

Sounds like fuel system to me.