2004 Yamaha G27-AZ "UMAX LIGHT DUTY" (CARB) Service and R...
For the 2004 model year, the carbureted G27-AZ carries model code G27AZ, and the service information for it lives in Yamaha's LIT-19616-G2-70.
This is a family manual. Yamaha wrote it to run from 2004 through 2009, and its pages address every UMAX variant of that period: the other carbureted G27 cars, the 48-volt DC-motor G27 machines, and the G28 UMAX MEDIUM DUTY II line. When a procedure differs between a carbureted car and a DC-motor car, the manual says so rather than leaving you to guess.
Expect torque tables, step-ordered removal and assembly instructions, adjustment and inspection specifications, complete wiring diagrams and diagnostic flow charts. It is the reference a dealer technician used, so a home mechanic working carefully on brakes, steering, the rear axle or the charging system is following the same instructions the factory did.