What kind of carburetor is that Rob? It looks quite a bit like a Walbro WT, but I'm not at all sure about it. The interior of the metering chamber looks like it, and that WT391 stamped on it could be a clue too.
I wish that picture of the metering chamber had been taken from a few inches further away, so I could try to figure out what that green stuff is.
And I can't imagine what a decent-looking Poulan saw was doing in a tip shop.
