What are you all running? Tried to look for the very old group buy thread but couldn't find it. If you could let me know what you are running / for how long / any problem etc?
The fuel cut off solenoid on the carb is to stop the engine running when the ignition is turned off. You also get them that sit in the fuel line and will cut the fuel completely. See below:
I used one as part of the LPG installation as obviously you don't want petrol and LPG going in at the same time. Oh and if anyone wants to buy the one in the pic then give me a shout