I have a Poulan Wildthing42CC. I asked the question from ordertree.com, the Poulan site and recieved a 4 page pdf file the next day.
Basic routing is Fuel filter in tank to lower spicket on carb, upper spicket on carb to long stub on primer bulb, short stub on bulb to return line into tank (large diameter tube)
Bill, December 2007