1997 Yamaha G19-ER "ULTIMA" (48V - DC MOTOR) Service and ...
Second-year 48-volt ULTIMA cars are coded G19ER, and the factory service volume is LIT-19616-G1-90.
One book, seven model years. Yamaha's coverage stretches from 1996 to 2002 and names the G19-EP, G19-ES, G19-ET, G19-EU, G19-EW and the 2002 G19-AX alongside this 1997 car, which is convenient when a used G19 turns out not to be the year it was advertised as.
Everything in it is written for someone doing the work. Removal and refitting steps in the factory order, measurements with the limits they are checked against, torque values at the fasteners that need them, circuit diagrams for the 48-volt system, and diagnosis arranged around what the car is doing wrong. The motor, controller and charger sections are the ones you will reach for most on a car of this type.
Look for G19ER on the plate.