1987 Yamaha G3 - SUN CLASSIC (36-VOLT DC MOTOR) Service and Repair ...
The Sun Classic on 36-volt DC power is an early Yamaha golf car, and its service documentation is part number LIT-11616-05-90. On the car, the code reads G3 - E.
Yamaha's book here is short in scope by modern standards: two model years, 1986 and 1987, and a handful of naming variations of the same machine, listed in Yamaha's own records as G3 SUN CLASSIC (36V - DC MOTOR) and G3-E “SUN CLASSIC” in both spellings of the voltage.
For a car of this age the manual is the only reliable source of the factory's numbers. It gives the motor and controller service procedures, the wiring diagram as built, brake and steering work, torque values and the inspection limits Yamaha set. Quote LIT-11616-05-90 and match the G3 - E code and you have the correct reference for the 1987 car.