Yamaha YG6600D Service and Repair Manual
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For the YG6600D the factory reference is Yamaha part number LIT-19616-CM-66. It was written for this model code on its own.
Content is what a working technician needs and little else. The generator end is covered from rotor and stator inspection through insulation testing to output-circuit checks. Engine service runs from valve adjustment and carburettor work to a full crankcase overhaul, with torque values and service limits given at each stage rather than left to judgement.
The wiring is drawn out completely, including receptacle circuits and the protective devices, which is what a continuity check needs to be worth doing. Troubleshooting begins at the symptom and orders the tests sensibly.
Check YG6600D against the data plate on your machine before ordering.
