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The primer bulb will not suck gas to carburetor. .,????

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Hi Lawrence:
Try cleaning the gas filter. It's inside the gas tank. Lay the saw on its side with the gas tank cap facing up. Remove the cap. Use a piece of wire to "fish" the filter and rubber gas line out of the hole. You should be able to remove it, give it a good cleaning, and put it back on. Provided the carb isn't plugged up it should work fine.

Posted on Apr 26, 2015

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Posted on Jan 02, 2017

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SOURCE: primer bulb hook up

Two lines come from the tank--one with a filter that goes to the carburetor, another with no filter which goes to the output side of the primer bulb and passes pumped fuel back to the tank. Connect only the line with the filter on the end to the primer and pump it. If nothing happens, switch the line to the other port on the bulb and pump again. With fuel mix in the tank, one of these two ports should pull fuel into the bulb. When correct, put the filter-less line on the other port of the bulb. Remove the filtered line from the bulb and hook it to the upper fuel connection on the carburetor. Use another length of fuel line to connect the now open port of the bulb to the other port on the carburetor. If the connections on the carburetor are correct, fuel will fill the bulb after a few pumps. If nothing happens, reverse the two connections at the carburetor and try to pump again. You should see fuel enter the bulb with only the correct connections at the carburetor. Usually, these connections are unidentified and must be found by trial and error. This is also a good reason for replacing only one line at a time! When fuel pumps into the bulb, attempt to start--with luck, the engine will run. Once the engine runs normally, trim the line lengths so that you have no excess line, but don't have sharp bends in any line either--they will eventually kink! Hope this helps!

Posted on May 05, 2010

  • 597 Answers

SOURCE: carburetor overflowing

I think I'd quit pumping the primer bulb and just start the chainsaw.

Posted on Jun 03, 2009

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SOURCE: I have a poulan 2450 chainsaw and i can't get the

You may be overfilling the tank somewhat so that expanding fuel (from engine heat) is being pushed out of the vent. Check the fuel filter for plugging and all of the fuel lines for any rot, splitting, or other damage. The primer bulb is supposed to pull fuel from the fuel filter, then through the carburetor and on to the primer which should push the excess back into the tank through another line. If the above does not allow the primer to pump fuel, then dismantle the carburetor, clean with carburetor spray cleaner, and rekit it. Go to: http://www.drystacked.com for a 12 page article on Walbro brand carburetors--theory and troubleshooting. This information applies to most brands of carburetor. Hope this gets you running!

Posted on May 31, 2010

  • 221 Answers

SOURCE: need to know how to connect the gas lines from the

The lines should be connected to push fuel into the carburetor. The output (overflow) of the carb is routed back into the tank. So, two lines in the tank, one is an overflow (return) and the other is the suction. On the primer one line from the tank and the other to the carb. Connect so as to "push" fuel into the carb when the primer bulb is pushed.

Posted on Jun 16, 2010

  • 2 Answers

SOURCE: how to replace primer bulb on small echo gas chain saw.

I just replaced the primer bulb on my Echo cs-305.
I didn't find the parts list too helpful.

It's easy. All you have to do is remove the air filter and look at the existing bulb from the bottom-- you can reach in with a screwdriver and pop the 'feet' holding it in place off their catches. When I put the new one in, I attached the tubes using a pair of needlenose pliers.

Posted on Mar 05, 2012

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2 fuel lines broke (1 from tank 1 from primer bulb). Line from back of tank to back of carb still there. Which lines go where?


Do not mix them up!! Doing so will bring debris into carburetor. Assuming the line from back of tank to carburetor is the fuel feed line then you should also plan to replace it if the other lines have failed..

The primer bulb sucks (pulls) the air fuel through the carburetor thus venting out any air. The process draws the fuel through the in tank filter through the impulse fuel pump. The fuel connects via an internal carburetor passage from the pump to the needle valve and during the prime passes the needle valve into the pressure diaphragm chamber. From there the fuel is drawn(sucked) into the inlet side of the purge/prime valve and returns the air fuel into the tank.

The center hose on the primer is the return into the fuel tank. The hose from the center of the primer bulb goes directly to the fuel tank and is the return. The outer diameter hose connection to the primer is the connection made to the carburetor. By closing off the end of the hose you can test with your finger the function of each hose. You do not want to pass fuel into the carburetor by reversing the primer hoses.




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Dec 06, 2015 | Garden

2 Answers

Primer bulb not pumping fuel into carb, pull it out, no splits etc. Once I get fuel in it starts and runs fine??


Probably a valve in the priming system is stuck. It allows fuel to flow into the bulb from the tank, the valve should close then and allow the bulb pressure to spray into the carburetor. Could also be the opening into the carburetor from the prime bulb is blocked.

Mar 27, 2015 | Garden

1 Answer

MY HOMELITE RANGER CHAINSAW UT10532 PRIMER BULB NOW AL OF A SUDDEN PUSHES IN BUT DOES NOT COME OUT NOW---REPLACED PRIMER BULB--STILL DOES THE SAME THING


If hadn't changed the fuel lines prior to this problem it is probably the internal filter screen in the carburetor plugged or the tank's fuel filter.
If you had replaced the fuel lines then it is probably the plumbing of the fuel lines. The primer is suppose to suck through the carburetor and return the excess fuel back to the fuel tank. It fuel system plumbed backwards, which can be done several ways, the carburetor internal check valve will prevent proper operation of both itself and the primer.

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1 Answer

Starting problem


you more than likely sucked crap into the carburetor jet. Drop the Carburetor Bowl and check the Jet for an obstruction

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Need to know how to connect the gas lines from the primer bulb to the carburetor on a poulan woodshark model 1950 chainsaw


The lines should be connected to push fuel into the carburetor. The output (overflow) of the carb is routed back into the tank. So, two lines in the tank, one is an overflow (return) and the other is the suction. On the primer one line from the tank and the other to the carb. Connect so as to "push" fuel into the carb when the primer bulb is pushed.

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1 Answer

I have a poulan 2450 chainsaw and i can't get the primer bulb to **** any gas, the bulb is in good condition however there is gas leaking out of the gas cap in the center of it, do I need a new gas cap and...


You may be overfilling the tank somewhat so that expanding fuel (from engine heat) is being pushed out of the vent. Check the fuel filter for plugging and all of the fuel lines for any rot, splitting, or other damage. The primer bulb is supposed to pull fuel from the fuel filter, then through the carburetor and on to the primer which should push the excess back into the tank through another line. If the above does not allow the primer to pump fuel, then dismantle the carburetor, clean with carburetor spray cleaner, and rekit it. Go to: http://www.drystacked.com for a 12 page article on Walbro brand carburetors--theory and troubleshooting. This information applies to most brands of carburetor. Hope this gets you running!

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1 Answer

Poulan 2150 gas chain saw. How do I connect new primer bulb to carb and gas tank?


Make sure the tank is filled with fresh fuel mix.Try hooking the line that goes to the tank to one of the two primer ports and operate the bulb. If it does not pull fuel in, reverse the connection to the primer and try the bulb again. Once you get fuel into the bulb, move the tank line to the other port. Install a line from the open port on the primer to the open port on the carburetor. Try the primer bulb again, it should pull new fuel from the carburetor if the two connections at the carburetor have not been reversed. This is a kind of 'hit or miss' business when connecting fuel lines that involve the primer bulb. Nothing seems to be marked on the involved parts. Hope this helps

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2 Answers

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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

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My Toro 20016 will start but will only run for a minute. If I hold the primer button down all the way it will continue to run but will die if I release. I have cleaned the float and there are no leaks in...


You will need to clean out the jet on the bottom of the carburetor. The fuel is not being sucked in to engine. Check the needle and seat to make sure fuel is flowing in to the carburetor.

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