Join Date: Nov 2007
Location: Corpus Christi, TX
Start out simple. Buy you a Clymers manual. They're readily availble online and maybe local Barnes/Noble or auto parts store.
Remove tank, drain, slosh a little fresh gas around in it and drain that. Reinstall tank, put in a gallon or so of fresh gas with 3 or 4 ounces of Seafoam (a couple of ounces of acetone will also work). Open the float chamber drain, apply vaccum to the petcock and drain down till the fresh gas shows. Crank and run a minute or so, hopefully throttleing up some.
Then let it set at least overnight (but not more if you've used the acetone).
Then if it'll throttle up, put in more gas and a little more solvent and run that out.
If that doesn't work, you'll need to clean out the carb. There's several threads re that if you'll search.
Since it's been sitting, I'd change oil and filter very soon -- actually as soon as you've got it running and heated the oil for awhile. And remember - you're still well within the breakin period.