Electrical
Here's a short text only on getting your battery ready:
Here is a decent guide for going through the charging system, as usual with Chinese scoots it's generic, so just use cautiously:
Charging System Diagnostics PDF
The following is a picture of a six pin CDI (capacitor discharge ignition)module that will be referred to from various articles:
CDI-AC or DC? (Video)
This diagram shows the interconnection between the CDI, stator, and coil:
JRR found this evil wiring diagram of a typical Chinese scooter. If you stare at it too long an ancient Chinese warlord takes control of your mind. It already happened to JRR. I will try to simplify this diagram sometime in the future:
This diagram is a simplified version of the above but not as inclusive:
Here is a more complex wiring diagram with a four pin rectifier:
Here is another wiring diagram, I like this one because it can be expanded with clarity and it is nicely colored:
Here's a bloke who likes his caffeine explaining rectifiers/regulators, just take some dramamine and enjoy, there's some good info here: Part I (video) Part II (video) Part III (video)
CDI-AC or DC? (video)