I received a 2009 Yamaha yz450f in a trade around 4 or 5 months ago. Unfortunately that trade transaction was in the middle of my new home being built and completed so I was moving. The bike sat the majority of the time. I'm trying to sell, but the bike will not kick start. I drained and replaced gas, new spark plug with gap of .28, new air filter, but still will not start no matter how many times I kick. Is the only thing left to do is to fool with the carb? I'm looking for guidance and advice. Please in layman terms as I'm quite lame when it comes to bikes. I'm sorry to ask such a silly question, but honestly, I know next to nothing about it. Thank you in advance.