See the thread on scooter maintenance here;
[Scooter Maintenance
Also you need to think about how best to run in the engine. Standrad advice given by manufacturers seems to be to drive it very slowly for the first few hundred km, and continue reasonably slowly until you’ve reached 1000km.
I had my engine completely rebuilt, and ran it at 5000rpm and under for the first 800km. It was very frustrating at the time, but it has paid off. Over a year later, my engine is still very strong.