Portable Generator Wiring Schematic

I have a 1300w portable generator which has had the wiring mixed up.The petrol motor starts up and runs ok.But the wiring needs sorting out on the generator side of things.The generator rotor has 3 slip rings and 6 brushes There seems to be 3 sets of coils in the stator which are fed to a pair of red wires ,a pair of yellow wires and a pair of black wires. There is also a large electrolytic and a full wave rectifier to be wired up.I think that it originally had a switch that enabled a 110v output or 240v output.I would only need 240v output. have you idea how thse should be connected up?