2006 Yamaha G27-AC "UMAX LIGHT DUTY" (CARB) Service and R...
Yamaha published a single service volume for the light- and medium-duty UMAX line, and part number LIT-19616-G2-70 is the book that answers for the carbureted G27-AC. Model code G27AC is what appears on the car itself, so check the plate before you order.
Years and models this volume answers for
Coverage runs 2004 through 2009 and takes in the G27-AE, G27-AF and G27-AZ carbureted cars, the 48-volt DC-motor G27-EC, G27-EE, G27-EF and G27-EZ, and the whole G28 UMAX MEDIUM DUTY II range.
What you get is the factory's own sequence of work: removal and reassembly order, torque figures, adjustment values, wiring diagrams and the troubleshooting charts Yamaha wrote for its dealer technicians. A shop looking after a mixed UMAX fleet keeps one reference on the bench instead of six.