Tried to adjust idle speed, now it wont start.

Hey Guys,
I have a 2006 TRX300EX. It was always tough to start, but once running it was fine. After some research it seems the fix is to adjust the valves. Well I went ahead and adjusted the valves. It started right up after that, sounded good. Then I went on to adjust the idle speed to get a better/higher idle. Well after turning it back and fourth several times, now it doesn’t start. Any ideas? Is there a way to set it back to default to get it started?

Thanks
Mark