2004 Yamaha G23-AZ "UMAX UTILITY" (CARB - MEDIUM DUTY I) ...
Listed as the UMAX Utility in carbureted medium duty form, this 2004 car carries the code G23AZ and is documented in LIT-19616-G2-30.
The manual covers model years 2004 through 2009 and nine G23 UMAX variants, both carbureted and 48-volt electric. Naming on these cars varies between listings, so the code and the part number are what settle whether a book or a part matches the machine.
Content is the factory's own. Specifications and maintenance intervals open it, then engine and carburetor service with clearance figures, the fuel system, clutch and drive, brake and parking brake adjustment, rear axle overhaul, steering, front suspension, wheels, frame, cargo bed and body, and electrical diagnosis with full wiring diagrams.
First-year cars sometimes differ in detail from later ones. Where that is the case in the UMAX run, the manual notes which years a procedure or specification applies to.