How to set The High Air / Fuel Mixture on an Echo 2 Cycle Weedeater / Line Trimmer Carburetor
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- เผยแพร่เมื่อ 27 ก.ย. 2019
- Here is a quick video on how I like to adjust my high mixture setting screw on my Echo Weedeater line trimmer carburetor. This works for the low idle adjustment screw and the high rpm adjustment screw. This is a touchy procedure so make sure you do it properly or you can and will do damage to your machine. This procedure is pretty much identical to any 2 stroke / 2 cycle carburetor, like on a chainsaw or a leaf blower, weed whacker etc. Its the same sort of procedure on Stihl brand weed eater / chainsaw or Husqvarna etc. Some people say these carburetors are non adjustable, but I think they are wrong, watch this video and you will see. This adjustments were performed on a SRM 225 model trimmer but this method also works well on the PAS powerhead units as well.
I have been asked so many times, where is the carburetor adjustment screw? I decided to make this video!
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Hands down best video on this subject on the entire internet.
Absolutely
100% agreed.
Too lean for me
After being in the barn and forgotten for about 6 years, I was pulling my hair out trying to figure this out. After I found this video, and drilled the cap out, 1-1/4 turns to the left and it’s running like a sewing machine 🙌
You are the mechanic now!
Awesome thanks! I used a small screw to thread into the plug and pull it out.
First time in 10 years this thing has run properly!
Great idea! Just watching and didn’t want to wait for that spec tool so I’ll try this method
Your video was EXACTLY what I needed to get a friend's weed eater running right! Thanks Soo much!
Thank you ...the guy at my shop adjusted mine Infront of me...he a great small engine mechanic but is too fast for my eyes! This is all I need and you sir I thank!
the little brass nut was smashed on mine and the little plug thing you pulled out with that tool I had to break it up and dig it out with a precision screwdriver set, but I got to the little flat head adjustment and it works enough to trim my yard, great tutorial, now I can just get new fuel / air filters and a new spark plug and I should be like new.
Just wanted to say thank you very much for the video. I put an amazon generic carb on mine and could not even get it to start. Out of the numerous videos a watched not one of them mentioned the low speed mixture screw that you did. On this carb there were no caps blocking either screw but both were turned in all the way. Thank god I got the kit that had the screwdriver included. What I also noticed is they leave it up to you to shorten the return line? hose. Both nipples on the new carb are the same size so its easy to get them mixed up so it won't run at half tank and also the vent hose will push fuel out whole time. Now it actually runs to good and cuts as good at idle as it did at full throttle. Too funny. Thanks again . Now I don't have to throw it across the yard again until it need another carb.
Brought my Nadine out(SRM-210) on a job today and did some purpose field service adjustments like you did, worked like a charm. Now I'l selling all my Ryobi stuff and going back to gas.
That tool to take the plug out is great. I used a pick to get it out yesterday 😂 took a while, basically broke it piece by piece. Eventually i was able to pull it
Great video! Easy instructions and clearly explained without wasting time.
You just saved me a massive headache and of course money 💰 That was a great explanation to my issue. Thanks!!!!
thats why they put the caps and from stock there never exactly perrrrrrrfect ;)
If your Echo with this type of carb bogs down at full throttle. You need to unscrew and remove the high mixture needle. There is a hole in the tip of the needle that will clog. Use a single wire strand to open up the passage. On mind, I turn the needle vale all the way closed the one turn open to start. Then adjust to a smooth speed. There is also a low mixture screw on top of the carb that will need to be adjusted, mine is about 6-7 turns open.
Out of all the videos I researched on TH-cam, this was the one that solved my problem (just one of many but still grateful). I had run the gamut of advice from, ‘tear your carb apart’ to ‘don’t buy an Echo’. Having just done a carb replacement, I knew there was something missing from the equation. The high throttle adjustment was the answer. FYI there were no caps on the new carburetor. Thanks again.
Echoes are great we've been selling them since 2009. They have a 5 year warranty on them so just make sure to bring it into your dealer and get the carb replaced under warranty before the first 5 years is up and you should be good for 10 years.
What if my trimmer bogs down when I gas it? Is it too rich? I’ve already replaced all fuel lines, fuel filter, air filter, and spark plug?
Did yiu figure it out ? Thatsnwhy imhere lol @@zxmbielife2502
I thought i had a dud carby out of the box.
She's running sweet now. Thanks you
OUTSTANDING!! Thank you, sir. Exactly what I was looking for! Bravo
Best adjustment video I’ve watched so far. Great job!
Thanks!
@@machinesnmetal what size mm tool you think would fit an srm-2620? 2.5 mm or 3.0 mm tool?
Awesome! I looked all over for that adjustment screw.
Best video I have seen yet. Thank you sir.
Interesting video, going to get that tool you showed to pull the cap. Thanks! 👍👍. Subscribed
I didn’t know that type of carb can be adjusted, thank you!
I liked where you had it right before you leaned it out that last little bit. I like to hear just a touch of 4 stroke every 2-3 seconds just to be sure I'm not at all lean. Great video for sure!
it should be fine
@@machinesnmetal, I'm sure it will. You're definitely about as lean as you can go safely. I would be ok at running run my stuff there as I, probably like you, can feel and smell heat but I definitely wouldn't set a customer's engine that lean not knowing how they're going to run it. They lug it much at all and they're going to overheat it.
Yea I thought it leaned out too much for me I like em to do what u said or to clean up once it's got a load it just depends on how hard I'm going to be running it
Thanks a bunch I was cutting my yard all of a sudden it kept dying out 😮I tried to adjust the screw it’s running good now 👍💯
Awesome sir, was fixing to add it to the junk. Thanks
Thank you so much cuz I will look at all over for the adjustment I didn't know where it was located now I know this is a blessing for me thank you so much
I hated my weedeater until you came along .. thank you
nicely done! ive watched other videos where they use a screw to pull the set screw cap off. i just backed the set screw out and it pushed the cover out.
She hit the sweet spot I can’t wait to do this. My echo been running hella rich and my filter is soaked in gas after like 2 months. Hope this fixes my problem
Good luck!!!!
Great video . Very informative.
I do small engine repair and these new 2 cycle zama carbs had me fooled. I didn't know they could be adjusted. I saw a couple other videos and then yours was very informative on the adjustment. What I think the issue is with the 2014 SRM225 I'm working on is the age and compression at 8ipsi. I ordered a new replacement carburetor and I'll see if it runs after that.
It just won't ifle right or work at high rpm.
80 seems low, 140/160 is the happy spot
Outstanding! My GT225 always 4 stroked mostly. I had just replaced the carburetor as part of a tuneup kit ($13.50 included carb, spark plug, gaskets, fuel lines, & fuel bulbs) & couldn’t find mixture screws. Found this great vid and the ‘ol Echo runs better than new. Aftermarket carb didn’t even have the limiter caps - score!
You! Are the mechanic now!
Bout to buy the the same kit for my girlfriends mom weedeater. It was my gf's grandpas. Been sitting for 3 years or more so I was gonna clean it until I realized the new carb comes with a whole tune up kit for less than 20 bucks. Figured if I was gonna take it off might well replace everything for that price.
Just bought a new carb for an old pas 225 and it starts and idle pretty nice but when i go full throttle it seems to not rev high as it should. going to try this tomorrow and hope it fixes the problem.. thanks for the education brother!!!!
I know I could kinda hear it in the vid but not really but I know what you are talking about. Good video
Best video yet on high/low adjustment thanks bud..
You are the mechanic now!
hey dude thanks a ton for the vid!
got my 225 couple days ago. ran 2 tanks of gas through and opened up the restrictor plate... after it was spitting like yours, knew i had to find the high adjustment to rich it up. i gave up looking and utubed it.... and your vid popped up! few others out there, but yours is simple, fast and to the point. trimmer runs like a billy goat with the munchies now!
checked out your channel. ive modded my husky and 2 echo chainsaws as well. if i need anymore help ill hit you up 1st... sub'd and thumbs up!!!
Thank you for your video it was very helpful 😊
That was excellent-Thank you
Glad it was helpful!
Good job jimmy👍good video
Thank you very helpful didn't know this very helpful information did not know that my goodness thank you
Thank you so much
Awesome how you fine tune the carburetor
Only finely tuned will do!
MOST EXCELLENT VIDEO THANKS.
Thanks for the tuning tip sir.
Can you show us how you tune the L screw?
Man!!!! Great video thank you…
Glad you liked it!
My srm 225 is new , ran 3 tanks of gas figuring it needed broke in but yeah mine did the same sputtering at max throttle , took that plug out and adjusted till I hit the spot where the engine was going back and forth from sputtering to smooth … tweaked it another 1/16 turn to lean where the engine was mostly smooth, tested in tall grass and it did have a bit more power…. Oh and when I adjusted carb I bumped the line head to get max line out to kinda put a load on the motor
You are the mechanic now!
Fantastic vid
Thanks, nice description,
Great video thank you. Question where do I buy this special tool to remove caps I can’t find it nowhere .
I bought mine at echopower.ca
The spark screen filter on mine was clean but removed it anyway
What is the settings on the screws
I have an echo SRM 255. When I go full throttle it barely spins, almost like there is no power and will almost die down and turn off. This is my first weed Wacker, I bought it new a month ago. I will try messing with the screws, but I'm hoping this is the issue. Any other tips?
Take it back to the dealer you got it from and they should be able to adjust it up or warranty a carburetor for you.
Can you use the same cap removing tool to remove a cap from a echo pb-250 (blower)?
I think so for sure
can u tell me exactly what model screw drivers i need ....
What would you adjust if it won't start after hot unless you put on choke pull once then take off choke starts right up?
Lo mix sounds lean.
Great video! I have this same unit. Where is the low adjustment located?
Top center of carburetor
100% excellent video
Thank you very much!
I did this to mind. It worked for about 10mins then doesn't so I tuen alittle more it only works for 10 min. The muffler is no dirty. What can it be?
Fantastic!!!!
Sounds good. Did the echo have a muffler mod?
stock
My SRM 225 runs wide open and If I squeeze the throttle it doesn’t rev. Can you please tell me what I need to do? Thank you.
make sure your carburetor barrel bearing isnt flat on one side preventing the barrel from springing back to the closed position. the older units has a white plastic bearing that wore on one side the replacements are brass
Great video forsure!!!
Thanks friend 🙏
Great video and explanation. I have this same weed eater and have a question:
After like 10-20 cord pulls on cold start, the tool fakes like it’s gonna idle, then dies. I can pull it a few more times and it’ll idle maybe for longer then dies. I then open the choke more and hold on the throttle to hopefully get it to catch and just run from there for however long I can get it to run. Do you know what I can do to make it run better?
I wouldn’t know If I’d need to adjust the high or low settings of the carb screws shown in video.
Would really appreciate a reply on this!
I'd say you need to bring up your idle speed a bit, or mess with the lo adjustment screw.
Having a hard time getting the low end cap out. Might have missed and squished it. Any advice getting it out.
Carefully push a sharp jewelers screwdriver right through it and into the slot of the adjusting screw underneath
My SRM 3020 Echo trimer doesn’t have a slotted screws. What is the proper tool needed for making the adjustments?
Thanks
You probably need a "D" tool
Nice!
New filter, plug, carb. Now my trimmer starts. But at high idle it slowly loses power. The spark arrester philip heads are rounded so ill have to remove them this weekend. What else could it be?
Carb setup properly? Hi/lo screws?
@@machinesnmetal i just did that a few hours ago. Runs perfect but after a while i have to adjust the hi screw again. Is it possible that screw is vibrating out of setting? It looks like someone messed with it before because there was no cap on the hi screw
i doubt it, they are usually pretty snug, fuel tank not venting? try cracking the cap when it starts to do it's dance. You said new carb in your first post, if someone's messed with it return it for another one. They may have damaged the seat inside the carb where the needle sits and that would make no amount of adjustment work properly..
@@machinesnmetal ill try opening cap but over all it runs better now
Hello… Does that 2.5 MM Echo tool also removed the brass part of the plug too? Or does it only remove the black plastic piece of the plug?
I believe I've used the same 2.5 tool to pull the brass plug there's a second tool I think it's 3 or 3.5 that I rarely if ever use.
Thank you buddy… Yes there is a 3MM but I already purchased the 2.5 MM and still waiting on it but I’m glad to hear that you have used that size before…
I had to get this machine back to my brother-in-law so I had to improvise… I use the number six or eight I forget which one it was I believe it was a number six sheet metal screw and filed the tip down and screwed it into the plug and pulled it with a pair of pliers… It took a little doing but it came out…But any excuse to buy a new tool lol
@@beezer15 Hi. Can you please help me with the correct link to buy the tool? I tried Google but I can't seem to find it online. Thank you!
Could I replace the solid echo triggers with the flared triggers that these have? I hate the solid ones
I'm not sure, knowing echo, probably not ...
Can you use the tool on the low side cap also? Where did you buy the tool?
www.echopower.ca
great video... but re: that cap puller, if u just take the bulb n hold plate of bulb, you can get a little screw twist 1 or 2 turns then yank out with pliers the cap is also pulled. Ofcourse my situation is different so I'm limited options atm.
Just saying I'm here to learn how to adjust best video yet.
I have a gt225 which looks exactly like the one your working on. The thing leaks gas, especially when the weather warms up. I’m thinking it’s a venting issue. I have replaced the grommet, and all 3 lines as well as the fuel filter. It’s sitting level on my bench but still leaks fuel. The vent is new as well. It’s screaming vent issue but would appreciate your wisdom. Also, where do you get that echo tool? Thank you for your time!!!
remove the vent temporarily and see if the problem goes away, where does it leak from?
@@machinesnmetal It's hard to tell. The area all around the grommet is soaked. It appears its coming from that area though. When i pulled the vent hose out of the hole in grommet i got "whoosh" of air sound. The tank isn't even full. This is baffling. Thanks again for your time!
is that vent tube supposed to be submerged in the gas inside the tank or just barely poked through the grommet?
Just poked through the grommet, not submerged into the fuel
Could be the grommet too, they shrink over time. Cheap on amazon
I just did that with the puller you have but do you half to put the plug back in it’s on a echo blower 255 ln if so how do you put it back
You should put it back, just do the reverse of how you removed it.
@@machinesnmetal ok thanks just did it
@@machinesnmetal another quick question how do you adjust it for different temps because after heat soak it takes like 15 seconds to run properly and then when it’s cold it runs perfect and stuff like that so how do you adjust it should you do it when it’s cold hot or after heat soak
It is best to set these up when they are at operating temperature
That’s the one we have
This might be a stupid question? I just bought an Echo srm225 brand new, mine sounds like the one in the video before you adjusted it, my question, will it hurt the engine if run like that? Or should it be adjusted? Also in all my old trimmer i ran 40:1 can fuel. With this trimmer i bought the echo 50:1 can fuel. Will it be ok running 50:1 echo can fuel?
to tell you the truth that canned fuel will do more damage to your new machine than it running rough. That fuel is AWFUL it attacks all the plastic and rubber parts of your fuel system, it runs hotter than traditional gas/oil mix and it makes less power.
If it's brand new and running like this one in the beginning of the video, take it back and get another one, it's warranty and won't cost you anything.
@@machinesnmetal Thank you so much for your reply. I will definitely take it back. I bought it from the Home Depot I also got their 2 year warranty. What mix do you recommend? 40:1 or 50:1? Also subbed your channel
50:1 if you can find Shindaiwa Red Armor oil mix use that, if not use the echo oil mix. Thanks for the sub!
🙏 thank you
Welcome!
Where did you get that echo tool
www.echopower.ca
I thought these usually came running too lean per EPA?
00:56 he said he's done work to the trimmer. You should watch the videos before asking questions for now on
I have a new carb, plug, air and fuel filter. When I replaced all these, weed-eater ran like new. A couple use and now it dies when I press the trigger. (GT-225). I checked the spark arrester and it was clear. Not sure what else to check
What kind of gas is in it? Is it good fresh two-cycle mix?
I used the premixed can from HD, True Fuel I think
@@machinesnmetal
That stuff is awful, it destroys carb diaphrams and fuel lines, as well makes less power and RPM. Your best to use 94 or greater octane ethanol free fuel and Shindaiwa Red Armor 50:1 mix.
@@machinesnmetal OK thank you for the input on this. So it’s possible that the diaphragm is toast. I will replace the diaphragm or even carb since they’re not very expensive. Empty out the fuel and get some new one.
Carbs are available on Amazon for $20. I use them all the time.
Let me ask you can you burn the engine if its running liner
absoloutley
Paper clip, heat the end to red hot. Put into cap let completely cool. Remove cap.
Can you make a video?
Weird, my 225 has a Zama butterfly carb but had EPA limiters. After tuning my Stihl saw the same way I did my brand new 225. Both are absolute animals now
what year is it?
@@machinesnmetal I think 2016 or 2017
Does counter clockwise richen it?
Yep
@@machinesnmetal Thanks for the reply sir.
When you adjusted it, is it feeding more or less fuel?
It depends on if it needs more or less
@@machinesnmetal in your example, were you adjusting it to feed it more fuel?
I adjusted it so it had too much fuel and then I adjusted it so it had too little and then I found the spot in the middle that was just perfect I can't say overall if from start to finish it was richer or leaner than when I started if that makes sense.
@@machinesnmetal thanks
@@machinesnmetal how did you tell when it had to little
Where did you get that tool from ?
Echopower.ca
What fuel goes in ? 50 to 1?
absolutely
👏🏼👏🏼👏🏼👏🏼
Hello where do you get the tool from ?
www.echopower.ca
What about echo 2620 I only see one screw on top?
That thing is a BEAST, there is a hi adjustment screw in-between where the fuel lines connect.
@@machinesnmetal thank you!! Yes it’s a beast I love it!!! Real power
Question my srm225 starts up fine but no power. If i take off the air filter it goes to full power. Will these screws fix that problem?
Try getting a new air filter first.
Ok just found out my son ran 40:1 mix through trimmer. Is there a fix for this or is it toast? Suggestions on what I can do to salvage trimmer. It’s about a year old.
40:1 won't hurt it. Just change the fuel to 50:1. I suggest replace the air filter
Thank you for the quick reply. Going to try the air filter first. Great video
The low screw does not turn. I removed the cap and found the small slotted screw but it just does not turn.
It's probably in all the way already
@@machinesnmetal I tried both directions really hard with a jewerl's screw driver and got nothing. I then loosened the nut at the top of the barrel and still nothing.
Awesome ta
Thank you so much 😀
@@machinesnmetal i enjoyed watching the vid too.
Looks like you're turning it to the right... Clockwise.... What if we have it turned all the way to the right ????
turn it back to the left (counter clockwise)
@@machinesnmetal where is it supposed to be at from the factory ? In the middle ? I installed a aftermarket carb, filter, spark plug and fuel line kit on it... The screws were exposed so I didn't have to remove the screw from factory carb but did so as practice. I just replaced the fuel line and filter with Home Depot echo you can kit, bc I may have damaged the other one..
I think usually turned all the way in GENTLY then backed out about a turn and a half should get roughly in the right spot where it will run and you can fine tune.
@@machinesnmetal I noticed fuel leaking from the fuel lines, I may have damaged the aftermarket grommet from the kit, went to HD and got a new 1 and that seems to have fixed the problem. My first carburetor repair, took hours and days but works
My guy!
Great help to me today. Thank you!
Happy to help!
Will that cause it to flood ?
Mine runs now but does not rev, adjusting the screw does nothing for mine
Needs a new carburetor
@@machinesnmetal Yep, ordered one of those cheapos on ebay. They have good reviews so hopefully it works out. Thank you for your help.
@@machinesnmetal yep, put a cheapo on and she makes that wacker noise again!
Mine keeps flooding and I recently installed a new carburetor
did you check the fuel vent?
@@machinesnmetal what do u mean by that exactly? And I change the fuel lines and vent line witha new vent cap when I replaced the carb.
Was it an OEM carburetor? Did you replace the air filter?
@@machinesnmetal it was a sakitam carburetor and I replaced the air filter
didn't have an echo plug remover... just drilled it out.
thank you so much that dang cap caused me hell.
Very good, but remember to clean exhaust port and muffler before testing carb settings. Fuel variations such as gas quality or ethanol content or oil amount per gallon can affect fuel-air needs.
Really informative video, it needs more volume though
So a drill bit will get the cap off when you break through you will know it! Nevermind that tool.
Also eyeglasses screw driver will do adjustments
Where is the low rmp adjustment screw
On the top of the carburetor in the center of the throttle barrel