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Here is the way to hook up the fuel lines
Note: I put it together outside of the saw so you could see how it is hooked up. Fuel filter/pickup >>to>> Inlet on carb >>to>> Outlet of carb >>to>> to inlet on Primer bulb(shorter post) >>to>> Outlet of primer(longer post) >>to>>Fuel tank (usually has a retainer in tank to prevent fuel line from coming out.)
Normally the big line will be the line the fuel filter is connected to inside of the tank.The smaller of the two lines is the return to the fuel tank from the carburetor after it is pumped thru the carburetor by the primer bulb.
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OK here goes, no pic but I will describe the best I can. This model should be equipped with a primer. The first thing you need to do is identify which connector is suction (in) and which one is return (out). Once you have done this it's simple. The return (out) has a line that goes right back to the tank. The suction (in) line hooks to the carburetor. The main fuel line from the tank with a filter on one end has the other end that connects to the carburetor. Now, with two fittings on the carburetor, find the one closest to the fuel pump cover (usually held on by one screw). This is the inlet fitting to the carburetor. This is where the fuel line connects that goes inside the tank with the filter on it. The lower or opposite fitting is where the suction line from the primer connects. This should do it. The return (out) line is usually a larger OD line than the suction & fuel line, which are the same size OD lines.
If the saw has a primer bulb, then you require one line from it's output out to the tank return. Another line runs from the carburetor outlet to the primer inlet. Make sure that you use original rubber lines, not plastic replacements. The primer ports are found by trial and error--hook the filtered line directly to one primer port and leave the other port open. If the bulb is in good condition, and correctly connected to fuel, the bulb should fill with fuel after several pumps. If nothing, reverse the port connection at the primer--and pump test again. One of these two connections should allow pumping to occur. When you get pumping, install the tank return line to the empty primer port. Remove the filtered line from the primer and install on the carburetor. A new piece of line runs from the now empty primer port and connects to the output port on the carburetor. If the carburetor lines are correct, you should be able to pump fuel through the carburetor body and out to the primer bulb. If nothing happens, you may need to swap the carburetor lines, and you will likely need to service the carburetor. Hope this helps!
The 'vent looking device' should be the fuel filter--remove it and make sure it is not plugged. The other end of that line should go to the carburetor inlet port near the top. When you get the line connected, pump the primer several times (tank is filled with fuel mix and the small line returning to the tank is pulled loose from the primer port) to see if it pumps fuel through the carburetor into the primer bulb. If it does not, swap the line from the carburetor to the other primer port and retry pumping again. If fuel fills the bulb, then plug the line from the tank to the vacated port on the primer. This will pump excess fuel back into the tank. Hope this helps!
A Poulan IPL for your saw “2375LE Gas Saw Type?” (LE is code for WildThing; if your saw is beyond serial -2 look at a saw without the LE; it makes little difference to the fuel system) 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.
Small hose (filter on bottom) long enough to reach all corners inside tank, to lower carburetor connection. Please leave the 2 carburetor connections long enough to reverse until the saw is running.
Upper carburetor connection, small hose to suction side of primer.
Pressure side of primer (large hose) to tank fitting.
The IPL is deceptive it appears the filtered hose connects to the primer; it does not. A typical fuel system and suggestion or 2 follow: http://www.fixya.com/support/r3706813-2_cycle_fuel_system_repair If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH Lou
I'm so confused. This is reported as a Poulan and McCulloch pole saw, which one? Is it a pole saw? That is the only 445 Poulan I can find. It is reported as an electric but has a fuel routing problem.
If it is a Poulan Pro gas pole saw it is here: PP445 Gas Pole Pruner
The fuel system routing is terrible, but it is all there is.
Fuel Routing follows:
Tank to carburetor (hose in tank with filter on free end)
Carburetor to primer (primer draws fuel from the tank through the carb)
Primer to fuel tank (returns any excess fuel to tank when pushed) HTH
What little fuel system detail ther is can be found here: Poulan.com http://www.ordertree.com/modelinfo/POULAN-WEED-EATER/75.59.html Find a model number that matches your saw. Fuel lines run from the tank to the carburetor to the purge pump and back to the tank. Take extensive notes and a few digital photos as you go are a good idea.