Stopped to help a friend after a nasty spill and laid my bike down to help tend to him. He ended up with a concussion and was out for several minutes...all is ok although he will take a break for a couple of weeks. After letting the bike sit for about 10 minutes on its side (left) I tried in vain to start it. Ended up having to walk it back to my truck. 07 yz450 - Any advice here for the future would be appreciated. Did it flood? Any tricks to getting one started in this condition? After it sat for about ten minutes it started on about the 5th kick. Rode later in the day and didn't have any issues.