2003 Yamaha G21-AY "YAMAHAULER" (CARB) Service and Repair...
Factory documentation for a 2003 Yamahauler
The book is LIT-19616-G2-1A. The car is coded G21AY. Those two identifiers are what a parts counter or a fellow technician will ask for.
Because Yamaha covered 2001 through 2004 in one volume, the manual also speaks to the G21-AW, G21-AX and G21-AZ. Nothing has been abridged to make that fit; year-specific notes appear where the factory made changes.
Expect the full service text: inspection intervals, engine and carburetor overhaul with clearance figures, clutch and drive train work, brake and parking brake adjustment, steering, suspension, body panels, and an electrical chapter with complete wiring diagrams and component tests.
The writing is direct and stays technical. If a bearing has a service limit, you will find the number. If a bolt has a torque value, it is printed beside the step, which is how you keep a hard-working utility car from developing the same fault twice.