Battery dead, no key to battery cover, need to

You can push start the bike without a charged battery. Put the bike in second gear, turn on ignition, roll down a hill until up to a fast walking pace and pop the clutch. Should start. You can also have some one push the bike while you sit on it and follow same procedure. Dont try pushing it yourself since it might take off when you pop the clutch.

Locate the starter motor solenoide & hook up to the positive terminal there! & the earth to the engine or frame ok
Cheers Rob