hades

Hi i just brought a klf400 that does not go has no spark the bike shop recons some magnets are missing but i have pulled it all apart flywheel and all other stuff seems fine its just missing some teeth from the starter kogs.
I was just wondering does it need battery power to create spark or should it spark without a battery.
When i hook up a battery everything id dead no lights no nothing.

Ant help would be good thanks.

hades

anyone out there that can help