Question about Ryobi Lawn Trimmers & Edgers

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My Ryobi weedeater engine keeps stalling out.

I was using my Ryobi one day and I flipped it upside down while it was running. It immediately stalled out and now I am unable to rev it up fully because it continues to stall out completely. What is wrong?

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  • Anonymous Dec 06, 2008

    I can crank my ryobi weedeater in choke and it will start. Then I put

    it on run and crank. It will start, then stop after a short time. Than it

    gets harder an harder to start. I have cleaned the carbeurator, checked

    the muffler for clogging. I replaced the fuel tank, because it was leaking.

    I will not run more than 15 or 20 seconds. I found a lot of dirt in the

    carb and blew out all ports with my compressor. Is ryobi mad a me

    or just dying?

  • gose Feb 12, 2009

    I have a Ryobi weedeater and it will start when I have the choke on but then when I try to take the choke off it stalls out. I have checked the muffler and everything else. What could this be?

  • Anonymous May 06, 2009

    I have adjusted the H screw after setting the L screw to the correct idle setting. The machine only will run at idle. I've replaced the fuel filter and the lines. I flushed the careburetor with cleaner. What else is there to try?

  • YardDuck May 15, 2009

    It worked! However I turned the (left) plastic screw, counter-clockwise, and I was able to flip the choke to "C"....now it runs like a champ.

    Thanks so much for the advise!

  • YardDuck May 15, 2009

    It worked! However, I turned the (left) plastic screw counter-clockwise and I was able to flip the choke switch to "C"...now I runs like a champ.

    Thanks so much for the suggestion!


  • Jim Giesen May 11, 2010

    3 things that shut down ryobis.



    1.Fuel hose split/perished and or fuel filter broken off in tank,,simple fix.



    2. blocked exhaust by insects poke somthing in hole to clear out.



    3. carby diaphrams hard/ britle causing pump not to work and or not metering fuel..



    becarefull using compressed air on the carby too much pressure will destroy the check valve in body.



    As a starting point high and low mix screws set to 1 to 1.1/4 turn from just seated...

  • Derwin Villanueva
    Derwin Villanueva Oct 03, 2012

    All you guys are da bomb diggity. Thanks!

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Here was my solution:
I was having problems with my ryobi cs30 weedeater also. It would start up fine on full choke, but i could not give it more than half throttle or ever take the choke off or it would stall out. I replaced fuel mixture, spark plug, spark arrestor/exhaust, fuel lines, cleaned carb, and still nothing! I was considering getting a better machine. Then i decided to play with the carb adjustments.(on my cs-30, they are two screws on the carb that have a "L" and "H" next to them) I dont think you can get the specialty tool for adjusting the carb unless you are a repair tech, so i just took a Dremmel tool with the circular cut-off wheel to the head of the specialty screws and made them into "flat-head" screws so i could adjust them with a regular screwdriver (if you dont have a dremmel too, get one!) (As i was cutting into the head of the screws, i also cut into the casing protecting the head of the screws that was in the way, this does not cause any damage to the unit, that casing is only there to keep "un-certified" people from adjusting it for themselves.)
Now to the easy part: The "L" screw adjusts the idle fuel mixture and the "H" screw adjusts the full throttle fuel mixture. turning the screws clockwise make the machine run leaner (less fuel) and counter clockwise makes it run richer (more fuel).
-I started out by turning each screw 1/2 turn counter clockwise and started it up, then as it was idling, i started adjusting the "L" screw as i was moving the choke position to run, after a few full turns counter clockwise of the "L" screw, it was idling perfectly in the run position, then i did the same thing the the "H" screw while holding down the throttle and i got it to run perfectly in the run position. Now it is running way better than it ever has. I hope this helps everyone.
Good Luck!

Posted on Apr 15, 2009

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  • Awdvld1978 Aug 21, 2011

    That was what was thinking of trying nexted. My primer bublble was wore out . So I replaces it,now it will idle on full choke , but as soon as I open the choke to full run it stalls out but thanks gonna try that next.

  • abraham rabago Dec 23, 2012

    Yes it was helpful. What I did was cut off a copper slotted screw head and super clue

  • abraham rabago Dec 23, 2012

    Continue, it to the adjusting screws. It work fine, Motor running great.

  • Rudy Gomez Jul 27, 2013

    Great answers! I found the PacMan adjusting tool on Amazon for $10, followed directions and now my SS30 runs like new!

  • Rudy Gomez Jul 27, 2013

    Thanks for the answers. I found Ryobi PacMan adjusting tool on Amazon for $10, followed directions, and now my SS30 is running like new!

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My weedeater started to kill while operating. The idle and run were fine. It kills like I hit the stop switch. I pull once and it starts right up then kills 30 seconds later. Any ideas on this.

Posted on Jun 02, 2010

  • abraham rabago Jan 06, 2013

    Try turning (L) srew counter clock wise Half turn more gas, let it idle when it's wram up.

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My CS30 that I just bought worked fine the first time I used it. It sat in the shed for maybe 2 weeks and when I tried to start it I had the same problems as nimmote wrote about. I wanted to use his suggestion to adjust the H and L jets on the carb, but didn't want to dremel out the guard and screws (in case I needed to return it). I tried several things to try and fit around those sloted adjustment screws and found that a 3/8" copper Watts "All-Tube" Nut Sleeve & Insert (that can be found in any hardware stores plumbing section) was the best. You simply pull out the insert and tap it onto one of the screws. I first tapped it on the H screw using a small hammer and keep in mind that the first time you have to use enough force to mold the copper mold around the screw, but once it is on there it is easily removed and placed on the L screw. Just look inside the insert and you can see a notch where it has been recessed around the screw slot. You line that notch up with the slot on the other screw and it slides on by hand. You can then use needle nose pliers to adjust either screw as nimmote described.
Now my CS30 runs like a champ!
In my case I had to turn the L screw about 1/2 turn CW to reduce air flow at idle and the H screw a 1/4 turn CCW to let in more fuel at full throttle. My understanding is the L screw is a needle valve that controls how much air is allowed in the carb and the H screw is a needle valve that controls how much fuel is allowed in the carb. Anyways hope this helps someone, it is absurd that they are not sloted screws that the end user is allowed to adjust...

Posted on May 09, 2009

  • abraham rabago Jan 06, 2013

    Removed both screws L and H and use a hack saw to cut a slot for a slotted srew driver. Put the screws back in all the way and back off counter clock wise one and half turn, start it up till warm and make you adjustments. Good luck

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Thanks for the advice, it worked. I had the identicle problem as describes (would start, but wouldn't idle and as soon as I gave it gas or moved into the B or C position it would die out)...The one thing I did differently was that I was able to slightly turn the L screw (white/clear casing) a half turn counter clockwise without removing it (there is a slot that a flat head will work on without removing the white casing and the screw will actually turn) and then I used a pair of plyers to pull off the red casing (H screw) completely as there is no way to turn the screw with a screwdriver with the casing on. Once I pulled the red casing off, I used a small flat head to also turn the H screw a half turn counter clockwise. Started it up and it idles well and runs well. Thanks for the advice. I would have had no idea otherwise.

Posted on Jun 20, 2009

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You can thank the EPA for all of these mixture-limiting BS contrivances.
The first thing I do on any engine that comes in for repair is to remove all of the limiters, then the mixtures can be adjusted correctly, according to the conditions needed for proper operation, and not conditions mandated by the EPA.

Posted on Jun 18, 2009

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My weedeater is impossible to start.Any suggestions

Posted on Mar 27, 2010

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Before you start touching the plastic covers on the fuel mixture screws make sure they are factory set and then move on to other fixes. These plastic set screws should be set that they touch one another flat faced. there is a cam type lobe on these plastic covers. Use needle nose pliers to turn them slightly towards each other (perpendicular) if you don't have the correct screwdriver.

Posted on May 10, 2010

  • Joseph Mayone Jul 18, 2011

    Search eBay for part number 530035560
    That would be the Splined Carb Tool you need.
    You can get one shipped for less than ten bucks, even an actual OEM part (not after market).
    JoJoCamel

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Thanks for answers. I ordered Ryobi PacMan adjusting tool on Amazon or $10, followed directions and now my SS30 is running like new!

Posted on Jul 27, 2013

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I have a ryobi weed eater engine, it just wont start, i cleaned everything, it dropped before but i doubt thats the problem, i messed with the l and h screws a little but i dont know what to do, and answers? if so email me at Vmd41696@aol.com

Posted on Jul 26, 2010

  • tinker728 Jul 30, 2011

    I dremeled both screws and just had to hold the trigger while turning each one a little at a time and it works great now! thanks all for the input.

  • abraham rabago Jan 02, 2013

    I took out the l and H adjusting screws and cut a slot with the hacksaw for a slotted screw driver. Now my Ryobi is runnning like new.When screwing screws back in, screw it all the way in, back off counter clockwise 1 1/2 turn on both screws, try starting, when it's starts adjust L screw first than the H with throttle open. good luck My weed eater is running like brand new.

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My idle was set too high. I had all the same problems you all describe, turned the idle down until it nearly died then turned it up a quarter turn. Runs perfect and most of the time will start without choking it.

Posted on Jun 02, 2016

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You can get the tool on ebay. There are several types. Most Ryobi's use the "pac-man" named such because of the shape of the head.

Posted on Jun 10, 2015

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My Ryobi ry3002a weed trimmer won't idle. It shuts off as-soon-as I move the lever to run position. I disassemble and clean the carburetor but no luck. Any suggestion?


Run at 1/2 choke rev the engine & count to 10 showly. The engine should now be warm enough. If it still stalls, turn up the low idle screw.

Aug 24, 2015 | Ryobi Lawn Trimmers & Edgers

1 Answer

Why does my edger stall when you take choke off ??


Carburetor adjustment required.
Most common items to check when sm. Gas engine won't run at full capacity (like choke off, or full throttle) are simple maintenance procedures. Check the following when engine bogs, clean or replace...
  • Spark Plug
    • When dirty with carbon buildup, proper spark gone - can't provide for good ignition
  • Fuel Filter, it's probably in the gas tank
    • When dirty, good flow is pretty restricted, engine starves for proper amount of fuel
  • Spark Arrestor Screen, at muffler
    • When all clogged up, exhaust flow is very restricted, creating back pressure = bogging engine
  • Carburetor, may need a rebuild kit
    • When dirty, clogged up and plugged up with build up of sediment, fuel flow is pretty much, down to a trickle. A good cleaning is usually the fix - a replacement of integral parts found in a rebuild kit = Time Well Spent
    • Then make sure you adjust properly
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Stihl weedeater stalls when I compress throttle trigger


dump the fuel --clean air filter-change spark plug-- use new fuel synthetic 2 cycle oil--93 octane

Oct 11, 2014 | Stihl Lawn Trimmers & Edgers

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I have a poulan 335 weedeater it is six months old it starts with choke but when you press the trigger it bogs down and stalls you can keep it running if you keep the trigger pressed but if you let off it...


If its only six months old i would think it is a carb adjustment issue ( running too lean ) you need to richen up the mixture by un screwing the mixture screws, start with 1/8 turn on each

Jun 30, 2012 | Poulan Lawn Trimmers & Edgers

1 Answer

My Ryobi RY30550 trimmer will start and run for a short time but will then only run at full throttle. If I try to let the engine idle, it will stall as soon as I try and pull the throttle. Once the engine...


Sounds like you will need to clean the carburetor or replace your carburetor internal rubber parts like the diaphgram and O rings.
Be sure to use compressed air to blow out all the fuel and air passages.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
Sometimes you can get by with priming the carburetor or using starting fluid and letting it run a few times like that and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.
Keep in mind that the float for the carburetor must be level when you go to reassemble the carburetor or follow the instrucitons you get with the carburetor kit.
If the mower/weedeater is over a year old, then I also recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, you will first need to seat the jet screws.
But before you seat the jet screws count the number of turns it takes to seat the jet screws from their original position.
Be sure to mark the turns down on a piece of paper.
That way when you put the jets back in, you know to seat them first and then turn them back out to their orginal position before you started.
This is a FREE answer,Please rate me

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1 Answer

Ryobi lawn trimmer keeps stalling out. I have


If it is a relatively new unit it should have the carburetor adjusted after the first few hours of use. If it stalls upon accelleration the low speed adjustment on the carb needs to be opened a little bit. If it runs a few minutes and then stalls it could be the high speed jet needs to be opened or the fuel filter is clogged.

Sep 16, 2009 | Ryobi Lawn Trimmers & Edgers

1 Answer

RUNS AND STALL WHEN YOU GIVE IT GAS


you are right on. try richer mixture.

May 22, 2009 | Ryobi Lawn Trimmers & Edgers

1 Answer

Engine stalls when giving gas


Make sure you have the carb. fuel line on the correct side of carb. Not on primer bulb side.

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