2005 Yamaha G22-EA "G-MAX" (48V - DC MOTOR) Service and R...
Battery cars ask different questions of a manual, and for the 2005 G22-EA G-MAX on the 48-volt DC motor the answers are in LIT-19616-22-04. Code: G22EA.
Yamaha covered 2003 to 2007 and fifteen G22 and G23 variants here, both the carbureted cars and the electrics, plus the UMAX Medium Duty utility models. One book serves a mixed fleet.
Electrical diagnosis
Battery pack and charger checks come first, then the solenoid, controller, direction switch, throttle input and motor, each with the reading the factory expects. The wiring diagrams show the harness as built, which is what you need when tracing an intermittent no-drive fault.
Mechanical work is equally complete: rear axle overhaul, brake adjustment with measured limits, steering, front suspension, wheels, frame and body, all carrying torque figures. The maintenance schedule at the front sets the intervals Yamaha intended.