Well I dusted off the 650 and when she didn't start I changed out the gas several months old. Still nothing. Went and got a brand new plug. Still nothing. Figured I clean out the carb with some cleaner and that should do it. Well lo and behold I discover no fuel is getting to float bowl. Couldn't figure out why the valve was stuck so sprayed it with carb cleaner and came in here to search for this problem and lo and behold I find a year old thread on the subject. Thanks to all who posted information here. After some reading and a view of the most excellent photos I went back to the garage to tackle the problem. Lucky for me the carb cleaner loosened the valve and I was immediately back in business. Bike back together the old pig started with two kicks wooooohoooooooo!!!!