There are safety cut off switches on the gear indicator, the clutch lever, and the kickstand as well as the kill switch on the handlebar, any of these could be the culpret. You might clicking the kill switch a few times, next try holding the clutch in, make sure the kickstand is returning all the way up. If none of this works I would guess that the wire to one of these switches is shorting or the ignition ( coil, controller, etc. Good Luck!! Let us know what you find. DBW