2005 Yamaha G22 G-MAX (48V - DC MOTOR) Service and Repair Manual
2005 G22 G-MAX, 48-volt DC motor
Factory part number: LIT-19616-22-04. Model code: G22EB. Confirm the code on the frame plate, because the G-MAX line ran in several near-identical builds.
One printing serves 2003 to 2007 and fifteen listed variants, which puts the carbureted G22 cars, the other electric G22s and the G23 UMAX Medium Duty models in the same binding. That is how Yamaha documented this platform, and it is why the same part number appears against many model years.
The electrical chapter is the heart of it for a battery car: charger and battery checks, solenoid and controller diagnosis, motor removal and inspection, and wiring diagrams drawn to the production harness. Mechanical sections handle the brakes, rear axle, steering and suspension with the factory's clearance and torque figures.
It reads as a working document, step by step, with the measurement you are meant to take at each stage spelled out.