What up D?
Welcome to the forum... gREEEEEAt place here..
You can look up my zx threads. one here and in the beginning i had one on the tech section.
Also zombie, shaka, sid also have zx threads with valuble info..mine is called "my lil red demon" or my zx issues
On these model scootes, we don't have a "drain plug". The bolt at the bottom of the fill bolt IS the drain bolt. May have to lean it. There is not much in there at all anyway.
The spark plug is easier seen if the seat box is removed to see under the panels. If you look above/behind the rear tire, you should see the plug. the cooling shroud does hide it. Jus follow the coil wire.
We can get that z back ion order.
Keep us posted..