Main jet kit: http://www.partsforscooters.com/1144...
Air filter: https://amzn.to/2ref3uw
Carburetor: https://amzn.to/2JL7li2

0:00 intro
0:57 Main jet
3:37 Elevation
7:26 Pilot jet
10:00 Idle
11:47 Needle
13:11 Accelerator pump
13:36 Temperature
14:21 Summary

This is a complete tutorial showing you how to tune a 50cc Chinese scooter carburetor. I will show you how to select the right jets, check the spark plug, and how to tell if the engine is running too lean or too rich.