My fuel lines rotted on my Poulan GTI17LE Weedeater. There was a fuel pickup and a little green 1-way (? I am not sure what this piece is or that it is truly a 1-way valve. One side is flared with a small opening and metal piece over it. The other side is tapered and solid) rubber piece in the tank. Everything I am finding online talks about 2 lines and a primer bulb. This weedeater does not have 2 lines or a primer bulb. There is 1 single line and the afore mentioned fuel pickup and green 1-way. I am not sure how to replace the line. Please help!