Thanks Max, the connector from the tank seems a better set up than the little stub on the carbie.

I was surprised how quickly the fuel got into the carbie when the tap was turned on. I read somewhere that the rubber bulb is not a primer as such but has something to do with air?

Can someone explain that one to me? I didn't see any air bubbles in the fuel line. Different mowers which seem to have the same carbie & tap seem to have different ideas on how many times to press the bulb.

Danny