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So you have separated the two halves of your Weber 32/36 DGV, DGEV or DGAV carburetor and and you have taken out the floats - now it's time to assess and remove the power valve. Here's how. The valve in question:
It's held in by the three bolts you see at the base. Press down on it and you'll see that it's spring loaded. There's a channel through the carburetor to a nearby hole:
We want to test this valve before removing it. Push down on the valve then cover the little hole:
Preventing air from going in the little hole should result in the valve not rising back up, or at least not rising back up as quickly as when the hole isn't covered. In this case it popped right back up, indicating that there was probably an issue with the valve.
Undo these three screws with a flat bladed screwdriver - make sure it fits well so as to avoid stripping out the soft metal:
The screw, removed:
The valve will probably be fairly firmly stuck on and won't move straight away;
Lift it off:
This rubber diaphragm has seen better days - little wonder it wasn't staying down:
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