Routing of fuel ines on a poulan 2075 chainsaw?

I will attach a link to an IPL that will show little. Let me say that tracing the lines is necessary. The one attached to the fuel filter enters the left side of the carb, the one exiting the right side attaches to the inlet of the purge and the other side of the puge dumps fuel back into the tank. The purge can be tested since it has one way valves by pushing in the bulb and sealing a connector with a finger. The connector that does not allow the bulb to come back out when sealed is the inlet. The exit blows air out when the bulb is pushed.