VK3CAT replied:

Hi Fozzy.
I have had a large 2 burner stove for many years & have nothing but praise for it. Also use a single mantle light & also a single burner (stove thing) all units have many common parts so carrying spare parts is kept to a minimum.
Having a single 10 litre container for all 3 appliances beats the hell of separate gas bottles & you only pay to top up the fuel container, unlike a gas bottle refill where you get charged for a full refill regardless of how much is in the bottle (well thats what happens over my way!)
Anyway, to your question, the fuel / gas regulation is done by the main control valve that is located on the main tube (called a power ??) from the fuel container. This controls all output to the main & auxillary burners. You turn on and light the auxillary burners once the main burner is alight. The main burner must be kept alight whilst using the auxillary burner(s). The output of the main burner will drop once auxillary burners are in use & it may be required to pump um the tank pressure a bit. The main burner is always the hottest one.
To light the main burner, first have the tank pumped up, turn the little brass starting lever up (must alter the fuel / air ratio or similar) then put a match to the main burner. This will light with a red flame until the fuel comming through the main tube is heated & vaporiized and a normal bule colour flame is produced. At this stage, the starting lever is put back to the down position.

Hope that this is of some help.
Cheers Tony.