Question about Craftsman 25cc Gas Line Trimmer

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Problem with primer bulb

When I push on the primer bulb it will not refill with "air" to be depressed again to push the gas through the line.

Craftsman Weedwacker e z fire 17in 25cc

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Reverse the line connections at the primer bulb. Look carefully, the long port has the line going to the tank, the short port on the bulb will connect with the fuel line to the carb.

Posted on Sep 05, 2009

  • Charles Cook
    Charles Cook Apr 10, 2014

    I have the same problem. I have the line connections attached correctly, but the bulb still will not refill. I detached from the fuel line port and the air refills the bulb. Any idea what my problem is? This is a Craftsman Model 316.791890.

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Posted on Jan 02, 2017

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Diagram of fuel lines from tank to primer to carb and back to tank for a poulan 2050 chainsaw.


clip_image002.gifFuel 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.
2_3_2012_12_23_25_pm.gif

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I need a fuel line schematic for a WeedEater brand Featherlite Plus weedeater


Presuming the primer bulb is on top of the carb....Fuel filter line out of gas tank goes to the lower part if carburetor body. The other line (normally larger in size) coming out of the fuel tank goes to the primer bulb outlet on the top of carb.
If the primer/purge bulb is not on the carb, things are a little different. The fuel filter line out of the tank still goes directly to the carb, as the bulb will pull old fuel/air out of the carb allowing fresh fuel to flow in and pushes old fuel/air back to the fuel tank.
Fresh fuel in, old fuel out of the carb...you can hook up a piece of fuel line to the bulb and tell which one is pulling and which one is pushing..or depress it with your fingers on it...either way you can tell.

Jul 04, 2010 | Garden

1 Answer

Replace gas line poulan-4000 chain saw


Typical fuel system:
9803f93.gif 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

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McCulloch 3216 fuel primer and gas tubes routing?


fbb4e12.gif
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 the bulb 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 will help with reassembly. HTH
Lou

Nov 01, 2009 | McCulloch Garden

2 Answers

I have a poulan 2150 chainsaw. I replaced the


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, the output line from the carburetor connects to the suction side of the primer bulb (once bulb is collapsed it draws fuel from the tank through the carburetor to refill the bulb as the bulb refills).
  • The pressure side of the primer returns any excess fuel to the tank as it is depressed.
HTH
Lou

Oct 25, 2009 | Poulan Pro 16-Inch 38 cc Anti-Vibration...

1 Answer

I have an echo C8 345 that will not run more than 5 secs. when you push the primer bulb and fill the carb, it will run until that is used up and quit. i took the fuel line off at the carb and gas runs out...


If pushing the bulb feeds fuel to the carburetor it isn't conneced properly.
EchoUSA
http://www.echo-usa.com/pdf/documentation/CS300_100605.pdf
  1. The filtered hose from the fuel tank connects directly to the carburetor input connection.
  2. The output line from the carburetor connects to the suction side of the primer bulb (once bulb is collapsed it draws fuel from the tank through the carburetor to refill the bulb as the bulb reinflates).
  3. The pressure side of the primer returns any excess fuel to the tank as it is depressed.
HTH
Lou

Oct 24, 2009 | Echo Garden

1 Answer

I need to replace the gas lines The lines fell apart unsure were the parts go were can I find a diagram of the gas lines


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

Oct 24, 2009 | Poulan Wild Thing 2375 18" Gas Chain Saw...

1 Answer

Won't start


drain fuel tank. keep depressing the primer bulb until it is clear. drain tank again. remove carb cover and disconnect lines one at a time. keep depressing primer bulb to get rid of excess gas. remove spark plug an turn engine in a position that the spark plug inlet is facing the floor, pull starter rope a few times to get rid of gas in the engine chamber.

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primer bulb on weedeater will not return to normal or **** gas into it. new primer bulb. lines to tank have been repalce and can blow through them but primer bulb will not push air into tank

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