Alright ladies n gents, me and a mate aquiered a mini moto, we know nothing about it

anyway, with no previous experience with 2 stroke or 2 stroke engines (despite knowing how they work) we cannot get it to start

plug was black. .so cleaned it up, wire was hanging off, comes out from beside the HT lead, so pushed it back on to where it looks like it goes (earths onto the crank case?) fuel tap was played about with, deffo getting fuel, however ive got a feeling it's just plain petrol with no 2stroke oil mixed in, any idea how to find out if it's got 2 stroke in it?

will need to check if it sparks aswell actually
cheers.