Motorcycle Repair: 2001 ninja 500r wont start, 2001 ninja 500r, float bowls

Question
got the bike with 2300 miles onit in january. ran fine. started it and rode it a few times over the winter and it had winterizer in the fuel. ran out the fuel last weekend and refilled. went a 100 miles, no prob. went to work and about yesterday no prob. started fine today, got up the block and it stalled and won't refire. any suggestions. can't seem to get a socket on plugs maybe i have wrong size? air filter is fine. not sure where to start next

Answer
The only way to "run out" the old fuel is to completely drain the tank. I would suspect the fuel is still contaminated, especially what remains in the carb float bowls. Try draining the float bowls and see if that helps. If not, you'll need to pull the spark plugs to check their condition and to see if they spark. You will most likely need a special thin walled socket to get at the plugs; if it didn't come with the tool kit then you may need to buy one from your local Kawasaki dealer.