Question about Husqvarna Forest & Garden #952802239 235E 16" Gas Chain Saw

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Husq 235e wont prime. bulb is good. wont **** fuel up the bigger hose into the bulb. when disconnected fuel sprays from smaller line.

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6ya6ya
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Posted on Jan 02, 2017

dontbother10
  • 2220 Answers

SOURCE: Has Ryobi RCS 3535A chainsaw a fuel bulb priming

The numbers you supply don't cross to an operators manual but that is typical of Homelite/Ryobi. I'm going to make an educated guess that it does not have a primer system. Other Ryobi saws with primer systems include it in the specification. The 3535A does not. Close scrutiny reveals no primer.
IMO fuel primers on chainsaws are one more source of problems. In the USA ethanol additives attack fuel hoses. Without a primer routing is from the fuel tank directly to the carburetor and much simpler to replace. Primers on chainsaws operate differently than 4 cycle engines too. No fuel is injected into the carburetor or engine, its only purpose is to ensure the carburetor is full of fuel,
Typical Fuel hose routing:

  • 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.
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HTH
Lou

Posted on Nov 15, 2009

jgwhomeequip
  • 1902 Answers

SOURCE: 323L Husqvarna trimmer

This sounds like the carb needs to be adjusted like it is letting to much fuel into the cylinder. There is supposed to be fuel and air mixture in the cylinder to make it fire. If there is to much fuel what will happen is that it will just build up in there and the air wont get hot enough as it compresses to start the engine.

Posted on May 21, 2009

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I changed the primer bulb on my echo srm-210 trimmer but it will not prime fuel in the bulb. The grummet the three lines go thru on the gas tank is not sealing the lines tight. Is this the cause?


If there is adequate fuel in the tank to completely cover the fuel filter than I expect the bulb to pull the fuel through the carburetor.

If you are able to determine the fuel intake hose (the hose that connects to the filter in the tank) to the carburetor than removing the hose from the carburetor and close off the inlet connection to the carburetor with your finger,

You should be able to achieve a vacuum that as you stroke the bulb that it eventually stays down and will only return the to the normal position when you release your finger from the carburetor inlet hose connection. This will leak check the bulb and carburetor. If this is successful drawing a vacuum than there is most likely a leak in the hose between the filter in the tank and from where you had disconnected the hose from the carburetor. Lowes and home depot provide a kit with a wire that snakes through the grommet allowing for this hose to be replaced..

If you cannot achieve a vacuum than the one way valves in the bulb prime are defective or an air leak through a check valve, metering diaphragm or fuel pump. A carburetor repair/replacement is likely

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1 Answer

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It sounds like you have a air line busted somewhere i had one of my outboards do that it wouldnt prime for anything so i ran everything down checked the fuel pump and cleaned that out tore apart the carbs cleaned them bought brand new fuel hose still scratching my head i took off the air lines for the carbs and put new ones worked like a champ

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fuel issue, look for cracks or holes in the two lines from tank to prime bulb, check prime bulb, adjust/clean carburetor, may also need to check filter inside tank it is connected to the bigger of the two hoses. Tim

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1 Answer

I have a homelite gas trimmer and i replaced both feul line on in the one bigger line goes into the tank and rests on the bottom and the other smaller has a fitting it slides on to on top of the tank the...


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2 Answers

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when you prime the bulb it sucks gas from the tank with the small tube, any excess gassed pumped will be fed back to the carb via the big tube leading to the tank. If you prime it and the bulb stays pushed down, then you have a clog or kink. To fix , pull the small tube out of the tank through the fill hole. Pull off the filter on the end and put the tube back in the tank. If it primes, your fuel filter was clogged. If it still wont prime check the hose going to the carb and make sure isnt clogged or kinked.(take of carb and blow in it). If that doesnt fix it take off the bulb from the carb with two screws. The bulb assembly will come off too(rectange metal thing) Take off the two black gaskets, be carefull with them. Take off hoses from carb and bulb asembly. Blow carb cleaner in all holes and over surface. Put back together.
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4 Answers

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Take top cover off(3 screws). Take off the 2 nuts holding the carb on. Pull carb part way out to access the hoses. Remove the 3 old hoses after making a diagram of where they connect. Buy new hoses. Cut one end of the small hose on a bevel, pierce both sides 1/8 th inch from the end with a needle. Thread a thin wire through both holes. Thread both wire ends into the gas tank. Use a hemostat or long needle nose plyers to pull the wires and then hose down into the tank. Attach the weighted fuel filter. The other end of this smaller diameter fuel line goes on the upper nipple on the carb. Take the side cover off (4 screws) to access the primer bulb. Take 2 screws out to remove the bulb which has 2 nipples. The longer nipple connects to the larger diameter hose which goes to the fuel tank. The larger diameter tube has a coupler on the end which is inside the gas tank. It took me an hour to change all 3 hoses.
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