2006 Yamaha G27-EC "UMAX LIGHT DUTY" (48V - DC MOTOR) Service and Repair Manual

Electric UMAX cars need different diagnosis from their carbureted siblings, and the 48-volt DC-motor G27-EC of 2006 is documented in Yamaha's LIT-19616-G2-70 under model code G27EC.

That part number is shared. Yamaha's coverage takes in the 2004 to 2009 seasons and runs across the G27-EE, G27-EF and G27-EZ DC-motor cars, the carbureted G27-AC, G27-AE, G27-AF and G27-AZ, and the G28 UMAX MEDIUM DUTY II line, with the differences between drive types spelled out in the relevant sections.

For a car on a DC motor the electrical chapters carry most of the weight: full wiring diagrams, controller and solenoid testing, motor and brush service, charging circuit checks. Chassis work is covered to the same standard, with brake adjustment figures, suspension and steering procedures and the factory's torque values throughout.