Yancy, If you got the same manual I got with my 2012 there is not much help there. I'd start off with a new plug. NGK D8EA .028 to .030in Get a new air filter the one on the bike is plumbed into the crankcase breather and that will cause nothing but trouble. I like this filter
http://www.roguemotorsportz.com/i601...Fag7MgodpAoAPA
Run the breather hose through the frame to the ground until you find a filter to put on the end of it. Do the air pump mod as suggested, I think it makes the motor sound and run better.
The fuel filter isn't very good so replace that.
Tune the carb http://wem.walbro.com/distributors/s...CAEBURETOR.pdf
You shouldn't worry about the jets as they have been fixed since the earlier models.
Adjust the valves to .06mm intake .08mm exhaust that is what the earlier manual quoted and this is the same engine.
https://docs.google.com/file/d/0ByFv...hl=en_US&pli=1
Use 10w-40 motorcycle oil