Two Stroke Scooter

how it triggers the engine start? Where can I find a diagram that explains how the electrical current flowing? thank you ..

http://en.wikipedia.org/wiki/2-stroke

The battery forces an electrical current that triggers a spark that ignites the fuel used to power the motor.

my dear friend Clive
I've been in this business long
there is no battery in a 2-stroke scooter engine bcoz it works with a running dynamo.that is the reason u need to kick on to run the dynamo generating elctric No spark (India)
If the scooter starts with push-button or auto boot and its 4-stroke engine and obviously so with the battery.
If u want a working scheme of this, check this out-
www.howthingswork.com