2001 Yamaha G20-AW "CONCIERGE 4/6" (CARB) Service and Rep...
For a 2001 Concierge 4/6, the number that matters is LIT-19616-G2-0A, and the car itself carries the code G20AW.
One book, three model years
Yamaha did not split the Concierge into annual manuals. This volume answers for 2000 through 2002, which puts the G20-AU and G20-AX alongside your G20-AW. Anyone maintaining a mixed batch of these cars can work from a single reference and expect the part numbers and settings to be called out where they differ.
The text is arranged for shop use. Maintenance schedules and adjustment values come first, followed by engine and carburetor work, clutch and drive, brake service, steering, body and the complete electrical section with diagrams. Fasteners have torque figures; wear parts have service limits.
It is written plainly, aimed at whoever is actually kneeling beside the car, and it assumes you want the reason behind a step as well as the step.