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test the carb

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I have an '03 DRZ400 s. The vacuum in the fuel system is shot and gas parties its way out of the tank, into the carb, and out through the overflow.

My questions are this:

1) how do I adjust the float/needle to stop the free flow of gas (I'm guessing this is the problem)

2) is there a better way to test it than hook it all up and wait to see of gas continues to dump out of the overflow?

Thanks for any help.

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Well.... the float will not always stop the flow, hence the vacuum operated (or manual petcok on most bikes).

Sometimes, cleaning or replacing the float needle valve will stop the flow but the right thing to do is replace the petcock (vacuum or manual one).

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I'm having the same problem, I think I've read that we would be better off with a WR (manual) petcock. If that's the case, would I ask for a petcock off the same year WR? (03 DRZ = 03 WR)

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