Thanks - helpful, probably.Mine is all in bits but from what I recall the thingy points to the tank it is
It's a start. When do you propose to get the rest of the parts?I have got the valve but nothing else.
I think this indicates that you are using the drivers tank.
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Now *that* is genuinely good stuff - muchacho appreciated!!
This might sound stupid, but have you tried having one tank empty, and seeing which way the switch allows the engine to run?