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Posted on Sep 05, 2012
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Weedeater runs good at idle..will not accelerate..new carborator..help

Idle all day long but will not take gas have adjusted idle speeds on new carborator

1 Answer

Anonymous

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  • Master 6,468 Answers
  • Posted on Sep 08, 2012
Anonymous
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Joined: Mar 13, 2012
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Remove the muffler and run it if ok open the muffler and clean the screen inside by burning it with a torch

5 Related Answers

Anonymous

  • 2220 Answers
  • Posted on Sep 26, 2009

SOURCE: Model 3400, runs on idle but not at full speed,

I think like you it is running lean. Normally I would provide a link to the IPL (exploded parts list) for your saw but Poulan just locked the site for non-dealers. Please register your displeasure here http://www.poulanpro.com/node4020.aspx. IMO as an owner, you should have free access to these.

Sounds like time for carburator kit, HTH
Lou

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Bill Linda Rivard

  • 197 Answers
  • Posted on Nov 18, 2009

SOURCE: I have a husqvarna 55. I put in a new carb, coil,

If you are still having problems I would check or replace white grommet inserted into cylinder and connected to manifold,they have issues with breaking or blowing out.This model also has problems with the black intake boot not sealing around cylinder and manifold,an easy check by spraying a LITTLE carb cleaner around problem area.

Daniel Bakewell

  • 691 Answers
  • Posted on Jan 19, 2010

SOURCE: Echo cs302s chainsaw. It won't accelerate, it

have you asked them? this website might help.
http://www.echo-usa.com/documentation.asp?Model=cs302s&lang=E

Diaphragms can develop tiny pin holes but i would expect this to cause it to stall rather than fail to accelerate.
The manuals and part diagrams may lead you to the fault. I would suspect the fault to lie in some kind of idle switch or other safety switch. It's one of those faults that are easier to diagnose when it's in your hands

Anonymous

  • 2220 Answers
  • Posted on Apr 05, 2010

SOURCE: Husqvarna 359: Has run fine for 3 years. Now when

I think an air leak and she is running lean. Maybe time for some pressure/vacuum testing. Continuing to tweak the carburetor may camouflage a larger problem until the saw fails.

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

Anonymous

  • 4088 Answers
  • Posted on May 15, 2010

SOURCE: chainsaw runs full speed, will not idle.

Expose the carburetor so that you can observe the action of the throttle lever on the carburetor. The trigger should move the lever from the idle adjust screw to full throttle stop. If no movement observed, remove the trigger assembly from the front handle (make notes as you remove the pieces) and clean the area of sawdust/dirt accumulation. Recheck the action after everything is re-assembled before starting the engine. If the idle speed is still excessive, then turn the idle speed screw several turns CCW until the chain stops turning. Try wiggling the carburetor body to see if it has come loose from the engine. Hope some of this helps!

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What is the setting or turns on the jet screw

both screws all the way in then back out 1 1/2 - 2 turns
hold at full throttle and start and keep at full throttle
adjust the screw closest to the air cleaner until the engine runs at full rpm easily
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Weedeater will idol but won't run - it will cut off when you try to give it gas

To begin with, let's start with the basics.
  1. Are you using fresh gas? If not, you need to get some. If there is any old gas/oil mixture in the machine, remove it by pouring it into some sort of container.
  2. If want to purchase a gas/oil mixture already mixed, a store like Home Depot or Lowes has quart cans at the correct mixures. 50:1 / 40:1 etc. and it's Leaded gasoline usually 91 octane.
Weedeaters will lose their carburetor adjustment over time because of vibration or the fuel mixtures may change. The carburetor settings are crucial for the machine to run properly.
Not all carburetors are the same, but which ever one you have, you will need a special adjusting tool to do this. You can find adjusting sets locally or here. https://www.amazon.com/HIPA-Carburetor-Adjustment-Including-21-Teeth/dp/B01FAAKN7E/ref=sr_1_3?ie=UTF8&qid=1467833656&sr=8-3&keywords=carburetor+adjusting+tool

Not To do this process, you will need to identify the 2 special

adjusting screws on the top or side of the carburetor.
The screws are highlighted as HI and LO. The HI allows fuel adjustment for the weedeater at full throttle. The LO is for the adjusting the idle.

Try these steps:
1. Adjust both screws clockwise until just seated (tight) using the correct tool (from a set similar to the one above)
2. Rotate the HI screw 1 1/2 turns counter-clockwise
3. Rotate the LO screw 1 turn counter-clockwise
4. Start the machine.
5. When it's running (spitting, coughing...) adjust the LO screw a 1/4 turn either way until you get a smooth idle.
6. Pull handle to run at full throttle. If the engine is sputtering then it's getting too much fuel....adjust the HI 1/4 turn clockwise checking to see if the engine runs smoother.
7. When you get the weedeater running smoothly, there are no further adjustments to be made. Just make sure you are using FRESH gas/oil that hasn't been sitting longer than 30 days.
Good Luck!




Once j
Jul 06, 2016 • Garden
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I have a 1995 homelite plt-3400 gas trimmer. It starts ok. It runs fine at full throttle, but will not idle. I have replaced the primer bulb because it had a crack and it has a new spark plug. I have also...

You may be able to adjust the carburetor as I describe below but if it doesn't work then I would recommend you clean the carburetor and install a carburetor kit. When you have it back together then you will need to able to adjust the two mixture adjustment screws. When you have it started you goal is to adjust the idle screw so it not only idles but when you pull on the speed control it does not falter you try to accelerate it. The other screw affects the mixture at higher speed. When you can accelerate it from idle to full speed and back again repeatedly without faltering etc. then it is fairly good. If you turn both of these screws counter clockwise a little more it should reduce the risk that you may be too lean. It still needs to run well. I hope this helps and if you have any other questions feel free to contact me.
Aug 14, 2011 • Garden
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Weed eater starts and idles after it warms. When I accelerate it sounds like it is choking itself out or it is starved for gas then stalls.restart and it does it all over. Sometimes it stalls when i go to...

Take out carb and spray with carb cleaner through and into all portals. Blow out with air compressor.and reassemble.

Adjust idle and low and high mixture screws according for proper operation.
1helpful
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How to set carborator adjustment on Poulan Wild Thing 2375?

hello,the starting point for adjustment screws is 2 turns out.turn in til lightly seated so as not to damage them. there are 2 or more style carbs used on saw,some have plastic caps that need to be removed(a small metal screw used as a corkscrew or pry off) or you need a special tool -splined.set high spped til runs good and back off an 1/8-1/4 turn so you dont burn it up. fine tune low spped so it accelerates when trigger squeezed and re check high speed adjustment.single screw is for idle spped-raises or lowers-if chain turns while at idle back off screw.

[email protected]
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I am having the same problem with acceleration speed on my blower

If the units is like mine, the adv. shafts, hi & low are knurled around the sides. you must find something to slip over them, (almost Impossible).I have a thin hawksaw blade and i sawed a slot in the end of each shaft.Check your head bolts. Yours, Knowitnothing
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Runs good when on the gas but wont idle

You might try adjusting the timing on the carborator.
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