Hi I've wanted a working SOM for years I've now got two which I can't seem to get as Lister intended the start-o-matic side to work when you have a light plugged in and switch the switch on.

I'm no good with all those complicated electrical bits would anyone be prepared to look over this and repair as necessary for me at my cost, paid job.
I cross my fingers..

Thanks
Steve

It just goes to show you have to check your air filter, My engine is a 6hp Lister running a ST5 alternator.

I have been experimenting with different fuels, so when I needed to start it from cold it needed some help, took of the air filter and heated the inlet as I turned the engine over.
Started got up to speed, I replaced the air filter to find it got sucked on like a vacuum cleaner,
looked at the volt meter, the alternator dropped 2volts, took the air filter off, volts went up 2 volts...

Just goes to show how much power and fuel loss a air filter can course even when looking OK.