Is the fuel filter located in the line directly below the primer bulb? There is a fuel filter attached to a different line in the gas tank

there is a filter attached in the tank

Fuel components are onthe "Engine Assembly" & "Handle, Chassis, & BarAssembly" detail pages.
Replacement fuel lines can be found at yourlocal chainsaw seller/mechanic. They are different diameters.

Fuel Line Replacement

• The hose in the tank with the filter on the free end connects directly to the carburetor input connection.

• If the saw is equipped with a primer bulb, the output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill the bulb as it inflates).

• The pressure side of the primer returns displaced fuel to the tank as it is depressed.

Line from fuel filter goes directly into the inlet of the carburetor and the line from the snap in bulb that is marked "in" attaches to the other outlet connector on the carb. Last is the long side of the bulb goes to the return on the gas tank. The snap in bulb sucks the gas but not directly from the filter hose, it does this through the carb as if it were trying to not only **** in the fuel but also removing the air trapped in the carb. You'll notice that the bulb has a **** side and a discharge side, and the **** side goes directly to the carb outlet connector. I tried to make this a clear as possible, and I hope it helps.

Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0

• The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
• If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
• The pressure side of the primer returns displaced fuel to the tank as it is depressed.

Take lots of notes and a few digital photographs to help with reassembly.

The line with the filter needs to be long enough to reach all parts of the tank as the saw is moved, a little to long is probably better than to short. The line returning from the primer is not critical so long as it cannot fall out (mid tank). All the primer line does is return excess fuel to the tank. Does this answer your question?
HTH
Lou

Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0

• The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
• If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
• The pressure side of the primer returns displaced fuel to the tank as it is depressed.

Take lots of notes and a few digital photographs to help with reassembly.

HTH
Lou

Fuel systen components part numbers and a little detial can be found here:
Poulan.com
http://www.ordertree.com/modelinfo/POULAN-WEED-EATER/75.59.html
The dash number of your serial number is the type.
A helpful video, a few of my suggestions and a typical fuel system follow:
Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0

• The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
• If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
• The pressure side of the primer returns displaced fuel to the tank as it is depressed.

Take lots of notes and a few digital photographs to help with reassembly.

HTH Lou

Typical fuel system:
Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0

• The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
• If the saw is equipped with a primer bulb, the output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
• The pressure side of the primer returns displaced fuel to the tank as it is depressed.

Take lots of notes and a few digital photographs to help with reassembly. HTH
Lou

What little fuel system system detail there is can be found here:
Poulan.com
http://www.ordertree.com/modelinfo/POULAN-WEED-EATER/75.59.html
If it is a 2375 WildThing find 2375LE Gas Saw Type ?. The last digit of your serial number should be a -1 or -2, the type.

Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0

• The filtered hose from the fuel tank connects directly to the carburetor input connection.
• If the saw is equipped with a primer, the output line from the carburetor connects to the suction side of the primer bulb (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill the bulb as the bulb reinflates).
• The pressure side of the primer returns any excess fuel to the tank as it is depressed.

HTH
Lou

Hi this is the way it should go: 1 from the filter in the tank to the bottom of the carby,2 from the top of the carby to the inlet on the primer,3 from the outlet on the primer back to the tank as this is the return line nothing goes onto it.

Gas line diagram for poulan 2050 .