trying to repair this for my son.. not getting spark. theirs a place under the gas tank looks like a key ignition.. does it really need a key? my son has left this bike sit a few years and his mother let me bring it to my place to repair it. both breaks were froze up (already repaired).. many minor odds and ends already fixed just lost on the electrical aspect of this.their was a little water inside the case that holds flywheel,stator,etc etc.going to remove flywheel see if there is any rust.i am lost on why i am am not getting spark. i would love to get this fixed for him can someone suggest possible solutions so i can get his bike running again please??..........