BizFizz

I recently picked up a Yamaha XS360C that was said to be running not long ago and just needed a battery. (We've all heard that) After I got a battery and charged it I plug it in and the bike has no spark and when pressing the "start" button in the right hand controls nothing happens. However if I bypass the solenoid the engine does turn but still doesent have spark. Please help? (Drewpy perhaps)