Ok, with today's gas it's almost a certainty that your pilot jet is a bit plugged up.
I would remove the bowl off the carb.
Then unscrew both the pilot and main jet.
Hold them up to the light and make sure they are fully opened.
I like to use a magnifying glass to be sure that there is no obstructions.
Use a piece of wire (I use guitar strings) to thoroughly clean those jets.
I would also remove your air cleaner and wash it thoroughly and then lightly oil it.
If it has any holes, replace the filter.
I would also replace the plug just because but it may still be ok.
Take pics of your work and post it.
Remember, a picture says a thousand words
If bikes are for kids I'll never grow up.
It is in good shape aside from the paint. The only issue I am having now is getting it to start easy and idle for me. I joked I found a new workout with it called kickstarting. 
I may or may not keep it, really wanted a street bike, partly because I have no one to trail ride with, but it is an awful sweet little fast sucker. If making it a dual sport was not such a pain and cost a mint I would just do that.
