Hello. o7
Seeking wisdom.
I've been given an Lister without any plates for ID. That would be too easy.

It is a LR1 based on the block stamping.
Single pot.
Governor adjusting on the cranking end above and offset to the crank shaft.
3 position fuel lever - start (out and anti clockwise)/run/stop(clockwise)
24 volt started motor with button above starter.

starts first time on an easy crank. starts fine on 24 volts without using the decomp.
no motor issues apart from some light oil leaks.

Generator
This is where I am scratching my head a little.
The wiring was pulled apart for me before I saw it.
The generator is rigidly connected directly to the motor.
It is a brushed generator.
The connection box has 4 wires.

Two heavy gauge wires to the rotor via reasonably heavy slip rings. (4-6 mm2)
Wires to the brushes are red and black.
The rotor is wound more like a stator than a normal rotor, with the wiring through slots.
The resistance of the rotor winding is quite low, in the order of 3-5 ohms (after cleaning and reseating the brushes)
There are no capacitors or diodes on the rotor or stator.

Two lighter lighter wires to the stator (2.5 odd mm2)
Wires to the stator are black and white.
The stator is made up of 4 coils spaced at 90 to each other wired in series. The resistance of the stator is in the order of 200 ohms.

I was expecting the rotor to be the exciter, but am now not sure.
Dispite what I though I new, it appears that the stator may be the exciter (with the coils in series).

The control circuit that came with it had been somewhat butchered. It used current tapping exciter transformer and several capacitors to boost the voltage. It was a mess. I am not going to use it. I am trying to get it running with a AVR I have lying around.

If anyone can comment on the generator it would be appreciated.
Looking for confirmation or otherwise with regards to the stator being the exciter.

cheers, Jack