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Poulan 2050 chainsaw. Fuel line routing. Replaced all fuel lines. Primer bulb is marked Tank and Carb side. Tank side is for larger line and runs into tank and fuel filter. Carb side is smaller diameter line and runs to carb, but which fitting? Remaining carb nipple with small line runs to tank vent and sticks about 1 inch into tank top. Pushing on primer bulb PUSHES air OUT of fuel filter and sucks from carb side of bulb. Pulled out primer bulb and verified action separately. Definitely pulls from carb side and pushes into tank side which makes no sense to me at all. Going backwards like that would require source of gas to be from ''vent'' line in tank which isn't low enough into tank and would not be filtered. Can't believe primer bulb is suddenly working backwards. Hope you can help. Thanks. Rick

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  • ricksjunk Apr 15, 2009

    Poulan 2050 chainsaw. Saw your post on fuel line routing. Played with which lines go where on carb fittings and now have fuel flowing through circuit back into tank. Still no start. Feel compression with plug out and cranking. Have good spark. Tried starting fluid and fuel directly into cylinder. Still nothing. Can flywheel be 180 degrees out as on cars? Fuel is fresh. So, I have fuel, fire and compression. To my mind, the only thing left is timing and I have no clue on this thing. Thanks

  • ricksjunk Apr 16, 2009

    45 psi on first pull. 60+ on second pull. New piston ring. Walls looked good. Tried fuel in weedwhacker and it was fine. Have good spark. Tried fuel into carb throat. Nothing. Doesn't the decent psi indicate good sealing at intake/carb? PSI guage cannot check for bleed down. Could be losing it as fast as generated through case? Don't know if I should invest more time and money in this thing or not.Hate to give up now just when my right arm is looking so good! :)

  • Dennis Poe May 18, 2009

    I have a poulan 2050 chainsaw. Would you by chance know the ID and OD of the fuel lines?

    Thanks,

    Dennis

  • Jody Harmon
    Jody Harmon Aug 11, 2012

    thanks to all this is a saw someone eles took apart

  • Anonymous Mar 26, 2014

    replacing primer bulb fuel lines from tank

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Replaced my fuel lines on poulan 2050 today. The large diameter line is a return line from the primer to the tank. The smaller diameter line is the supply line from the tank to the carb. You need to cut this line and run a second piece of small diameter line from the card to the primer. I'm not sure if it makes a difference which of the two stems on the carb is the inlet or outlet line. I used the top stem as the inlet, and connected the bottom stem to the primer. My chainsaw started right up. So I either got lucky or maybe it doesn't matter.

Posted on May 05, 2010

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Hello my name is william scott from fayetteville nc. being a auto tech for 30 years you have to find fast and correct ways to turn the hrs. you can turn 30 per week or 100hrs any way if you take some
6 lb test strend fishing line tie it about 1 forth on fuel lines and feedthe line through the fuel tank and its done, took 2 minutes
thanks william d scott fayetteville nc,

Posted on Aug 02, 2010

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I recently replaced the fuel lines in my chainsaw. I ran a thin wire (about the size of one of the fine strings on a guitar) through the gas tank and poked a hole in the end of the fuel line with the wire and twisted it. I then nipped off the corners of the fuel line. I was able to easily pull the line back through the hole & into the tank because as you pull on the fuel line it stretches enough to reduce its diameter. Once its in the tank a ways you can grab it with your fingers and pull to the correct length.

Posted on Jun 27, 2010

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Pull new large line down into tank on right side. add new filter, connect to top of carb. primer bulb labled carbthat line goes to the other carb nipple, then the other primer line goes to little line down into tank

Posted on Oct 13, 2012

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1 Answer

How do i route the fuel lines to the carburator ?


Depending on which carb you have it should be the fuel line closest to the bottom on the right side of the carb that goes to the small side of the primer bulb. The long side of the primer bulb will go to the fuel tank as the return line.

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How to rout fuel lines to primer bulb on poulan 14" chainsaw


Short line on primer bulb goes to the left side of the carb. The long side on the primer bulb goes to in the fuel tank as the return line.

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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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1 Answer

Walbro WT891 carb on a Craftsman chainsaw. Carb is brand new, all fuel lines and fule filter replaced. I prime the carb with the little plunger, chainsaw starts up and runs out of fuel within 30 seconds....


Who connected these hoses? the normal routing for a machine with a primer is like this, the fuel hose from the tank with the filter on the end goes to the carb fuel inlet nozzel ( not to the primer ) nearest to the pump cover ( cover on carb held with one screw ) the pipe from the metering side of the carb connects to the shorter nozzel on the primer bulb ( suction side ), the longer nozzel on the primer ( pressure side ) connects to the pipe going back to the tank, just remember the primer pulls fuel from the carb,into the bulb, and pushes it back into the tank, it is not actually a primer it is a purge. because it is connected this way it is impossible to flood the engine no matter how many times the bulb is pressed.
Let me know if it starts and runs.

Jan 31, 2011 | Poulan Garden

1 Answer

I need a routing of the fuel lines from filter to, primer-in, primer-out, to carburator, out of carburator, back to tank. this is on a poulan chainsaw, 2550. Mod 952-05138. please respond.MARRY CHRISTMAS.


There are two holes in the fuel tank, it does not matter which line goes to which hole. The lines should run as follows: One line from the tank should have a filter on it, connect this line to the primer bulb and put a mark on it with a sharpie. Another line should run from the bulb to the carb, and the last should run from the carb back into the tank. After they are all in place, pump the bulb and watch the gas in the marked line. If gas is flowing from the tank through the marked line into the bulb and on to the carb you are done. If gas is flowing towards the tank in the marked line or not at all reverse the two lines on the bulb and you're done.

Dec 17, 2010 | Poulan Garden

2 Answers

I need the fuel line routing or diagram for a Poulan Predator 2150 LE. I have parts list but it does not depict the fuel detail I need.


Jimmy there are no Poulan drawings with fuel system detail worth the ink it takes to print them, but that is all there is.
Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0
Routing runs from fuel tank to carburetor, (if equipped) through carburetor to primer bulb (once compressed bulb draws fuel as it returns to normal) , bulb (as it is compressed) returns displaced to fuel tank. HTH
Lou

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2 Answers

Poulan chainsaw gas line routing?


There ARE two holes in the tank. One samll and another larger. One is on the left side and the other is on the right. Look carefully and you'll find them. As far as connections of the fuel lines:

The line from the fuel filter in the tank goes directly through the small hole in the tank to the top nipple on the carb thus giving the carb a constant supply of fuel when running. The primer bulb is used only for "priming" and does not play a part in the fuel flow after that function. The bottom nipple on then carb then goes back to the nipple on the primer bulb which is clearly marked "Carb". The above connections are made with the smaller diameter tubing. From the primer bulb, marked "Tank", the larger diameter tubing is routed to the large hole in the tank. The tubing goes into the tank only 1/2 to 3/4 inch. As far as getting the tubing through the holes in the tank, cutting the tubing at a slant. But no matter what you do it is still a witch. Be patient, use some Vaseline and avoid the temptation to get out the drill and **** the hole to a larger size.

Aug 30, 2009 | Garden

1 Answer

I may have lines on Backwards??


filtered line from tank goes into top inlet at carb. bottom inlet receives line that goes to carb side of primer {draw side} 3rd line goes from push side of bulb bach to fuel tank.

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

1 Answer

Routing of fuel lines from tank to primer bulb to carb


Line with filter goes to carb inlet,
Line from carb goes to inlet side of bulb.
Line from bulb goes to tank

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