Dose anyone have a schmatic for carb vent line routing. Any help would be appriciated.

Any particular machine?

On older sleds, the carb vents were just left hanging or tied to the carb in some way so that the ends were below the float bowl. On later models the vents are normally routed to the airbox to adjust the floatbowl pressure based on airbox pressure. If it gets really cold you can unhook the tubes from the airbox and let them hang free and your fuel system will act like you just jetted up 2 sizes.

The Machine is a 1995 XCR 600
It had some one way valves on the vent lines.
I recieved the Machine in pieces.