2007 Yamaha G27-AE "UMAX LIGHT DUTY" (CARB) Service and R...
Work on a 2007 G27-AE starts with knowing which book Yamaha wrote for it. That book is LIT-19616-G2-70, and the code stamped on this carbureted light-duty car is G27AE.
Rather than issue a separate manual per model year, Yamaha treated the UMAX range as one service family. The same volume carries the 2004 to 2009 cars and steps through the G27 carbureted and 48-volt DC-motor variants alongside the G28 UMAX MEDIUM DUTY II machines, so a procedure written for one applies with the differences called out where they exist.
Content is service-side throughout: engine and drivetrain teardown, brake and steering work, electrical diagnosis with full wiring diagrams, torque values and the fault-finding trees the factory supplied to dealers. Match the part number and the code and you know the procedures in front of you were written for the car in your shop.