If it is bad gas, it would be best to drain the tank, and maybe put some seafoam in with the fresh gas to try and help clean things out. I would say you need to clean out the carb, but your machine is fuel injected, so you may be having problems with the FI not wanting to work because you are having problems with the battery, the charging system, or bad connections. I would check all of your electrical connections and make sure they are secure and make sure the battery is full. If not, top it off with distilled water, and try giving it another charge and see if it helps. If your battery is not in top shape, the FI will not work. If you keep having to put it on a charger after that to get it to start, then you most likely need to replace the battery. Good luck.
Yours truly, sincerelly, love always, Josh aka The DirtDemon.