I am trying to repair a featherlite weedeater (belonging to an elderly neighbor who lost the manual) I have 2 things I figure are the problem. The first is easy, it needs a new sparkplug. The second howevr is in the fuel tank. laying loose inside the fuel tank were 2 peices of fuel line that is disntegrating a connector, some sort of flexible valve (like a one way rubbr valve to let fuel in and not out and a long cylinder with a connection (I assume this is a filter) the problem lies in not knowing howt they are all supposed to assemble. If someone could direct me to a diagram i would be thankful.

Garden - Poulan - 25cc 2-Cycle Gas Powered String Trimmer with Curved Shaft...