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Lawnstar
08-21-2010, 12:08 AM
I have a couple of Echo SRM 260 S string trimmers that the carburetors needs to be adjusted. I can't afford to pay the dealer to adjust them every 30 to 60 days. The trimmers are two and three years old, the grey ones, not the orange ones that have come out last year.

Is the adjustment inside the carburetor? Is it the needle valve that you see when you open the carburetor with half of it plastic coated the other half metal what you adjust? If yes, can someone post a picture of the tool used to adjust it? How you adjust it? Can you take a pair of small needle nose pliers and adjust it?

I'm so sick of this poorly engineered equipment. I bought a brand new SRM 265 high torque and within 30 days the carburetor needed adjusting. Dealer adjusted it under warrranty. Couple of weeks later it needed adjusting again.
This time the dealer put a new carburetor on it. To make a long story short
the carburetor needed adjusting three more times while under warranty. Now it is out of warrranty and needs adjusting again. This is ridiculous. My SRM
2601 1998 Model still runs today and never has had an adjustment.

Thanks

Merkava_4
08-21-2010, 08:27 AM
Echo shows two different Walbro carburetors depending on the serial
number of your trimmer. So what I need from you is the serial number
off your Echo SRM-260S trimmer and an email address to send the
information to. You can simply send me that information in a PM. Thumbs Up

ilc79
08-21-2010, 04:14 PM
Most of my echos have a little screw on the back side of the carb its covered up with a plastic insert, now take a little screw and start it to pull the plastic insert out and the flat head screw is there, stick your screw driver in and run the machine wide open and adjust left or right till it runs good I have to do this to all mine, redmax to.

ed2hess
08-21-2010, 06:42 PM
I'm so sick of this poorly engineered equipment. I bought a brand new SRM 265 high torque and within 30 days the carburetor needed adjusting. Thanks
Well the good news is teh 265 has adjustment needles(2) that you should be able to adjust with a special screw driver. The reason for not having a big external screw adjustment is caused by EPA. Some of the early 260 units did not have adjustable needles on them, the later ones did. If they have them they are hide by a plastic cap on both the 260 and 265. If no hidden needles then you are correct you will have to turn that needle. The best way is to slide a piece of insulation from a small wire onto the needle and turn it. Be sure to mark it so you know how much you turn it. It is painful. You have to look long and hard to fine units now with external visable adjustment.

Lawnstar
08-22-2010, 12:26 AM
Thanks guys. I own the SRM 261 T not the the 265.

Merkava_4
08-22-2010, 01:41 AM
3 documents have been sent to your email address.

Let me know if you need any further assistance.

caranheim
01-15-2012, 05:35 PM
I have an ECHO SRM 260S that has given me running problems for years. I asked the dealer that sold it to me if the carburater could be adjusted because I could only keep it running with the choke partially on. I was told there was no adjustment, and that I should try different brands of gasoline, or clean and rebuild the carburater. These suggestions worked. I finally purchased a new carburater ECHO p/n A021000700. While it ran better, it still wasn't right. After reading the post by ilc79 on this forum, I looked closely and saw the small hole with the adjusting screw. Needless to say, I was able to make the adjustment, and it worked great. I then looked at the original carburater and found it also had an adjusting screw, but it was covered with a white plastic plug which I removed using a small screw as described in the post. If I had know about this hidden adjusting screw early on, I could have saved the cost of two rebuild kits and a new carburater. Now I have one further question. If I had the need to clean the carburater, can that little adjusting screw be backed out of the hole so I could clean it and blow it out? It it a pointed needle valve with some kind of spring to keep it from turning from vibration? I don't dare try to back it out, for fear something will go out of place and I will not be able to put it back in.

Thanks guys for your help

ed2hess
01-15-2012, 08:15 PM
I have an ECHO SRM 260S that has given me running problems for years. I asked the dealer that sold it to me if the carburater could be adjusted because I could only keep it running with the choke partially on. I was told there was no adjustment, and that I should try different brands of gasoline, or clean and rebuild the carburater. These suggestions worked. I finally purchased a new carburater ECHO p/n A021000700. While it ran better, it still wasn't right. After reading the post by ilc79 on this forum, I looked closely and saw the small hole with the adjusting screw. Needless to say, I was able to make the adjustment, and it worked great. I then looked at the original carburater and found it also had an adjusting screw, but it was covered with a white plastic plug which I removed using a small screw as described in the post. If I had know about this hidden adjusting screw early on, I could have saved the cost of two rebuild kits and a new carburater. Now I have one further question. If I had the need to clean the carburater, can that little adjusting screw be backed out of the hole so I could clean it and blow it out? It it a pointed needle valve with some kind of spring to keep it from turning from vibration? I don't dare try to back it out, for fear something will go out of place and I will not be able to put it back in.

Thanks guys for your help

It can be backed out...but it is better to blow it out from inside out and not outside in.

caranheim
01-15-2012, 11:11 PM
ed2hess:
Thanks for your reply stating I can remove the mixture screw. Is there some kind of spring that keeps the screw from moving with vibration? If I try blowing air from the inside out, I worry about a possible spring blowing out as well.
By the way, there is partial error in my post. I said:
"I was told there was no adjustment, and that I should try different brands of gasoline, or clean and rebuild the carburater. These suggestions worked". I should have said these suggestions "partially worked". The engine never realy ran right from day one. The dealer said it will run better over time when the engine breaks in. This never happened. For four years I fought with it until reading about the mixture screw hidden in a small hole. After being told there was no adjustment on the carburetor, it did not look close enough. When I finally backed out the screw a little, it ran much better. It was just running too lean. I may put a small piece of tape over the hole so no dirt gets into it to be safe.

ed2hess
01-16-2012, 07:42 PM
ed2hess:
Thanks for your reply stating I can remove the mixture screw. Is there some kind of spring that keeps the screw from moving with vibration? If I try blowing air from the inside out, I worry about a possible spring blowing out as well.
By the way, there is partial error in my post. I said:
"I was told there was no adjustment, and that I should try different brands of gasoline, or clean and rebuild the carburater. These suggestions worked". I should have said these suggestions "partially worked". The engine never realy ran right from day one. The dealer said it will run better over time when the engine breaks in. This never happened. For four years I fought with it until reading about the mixture screw hidden in a small hole. After being told there was no adjustment on the carburetor, it did not look close enough. When I finally backed out the screw a little, it ran much better. It was just running too lean. I may put a small piece of tape over the hole so no dirt gets into it to be safe.
No springs inside. I bet 80% of the units start having problems and guys scrap them and/or change to stihl. I got units that I do a little rebuild on tha go on and on and on. The 260-261-265 are all winners. They didn't put a two adjustment on the 260 for awhile but you could buy one for it.

XPLRN
10-14-2012, 10:59 PM
I'm attempting to figure out where the "hidden" adjuster screw is on the Echo SRM 260 Trimmer. The 3rd post in this thread says this;

"Most of my echos have a little screw on the back side of the carb its covered up with a plastic insert, now take a little screw and start it to pull the plastic insert out and the flat head screw is there, stick your screw driver in and run the machine wide open and adjust left or right till it runs good I have to do this to all mine. "

I'm trying to figure out where this "back side of the carb" is located!??? Logically speaking the "front side of the carb would be the side facing the engine and the back side would be the side where the aircleaner/choke assembly bolts on. Now it makes no sense to me that one would have to take that aircleaner/choke assembly off to access this "magical" adjuster screw WHILE the machine is running!!????

Any ideas or pictures or ??? that can help me better comprehend this adjuster screw location!??

Many thanks in advance if you can share some of your tech knowledge on this subject!!!

XPLRN
10-15-2012, 03:29 AM
For some reason, I'm new to this website, there is no "edit" button on my post above.

After some additional searching on the subject of " Echo SRM260 carburetor adjustment " I found another thread on this website with the info I was seeking. That info was how to locate and adjust the high speed mixture screw on my currently problematic SRM260.

Info link;
http://www.lawnsite.com/showthread.php?t=287333&page=2

On this page post #13(link to pictures) and then post #15 (explaining what to look for) really helped me to locate the very obscure high speed adjustment screw. Thanks soooo much to the people that made these two posts and I'll post up some pictures later that will provide additional visual help.

It's late and very serene outside.........I don't want to disturb my neighbors with the starting and adjusting of the carb on the SRM260. Just sooo happy to finally have found the location, removed the plastic plug and made an initial adjustment. The adjustment consisted of screwing the adjustment screw out about 1/2 of a turn to see if that might make a difference/dislodge any crud that might be blocking the passage. In the morning I'll start it up and see if anything has changed and continue the quest to get it running strong again!!

caranheim
10-15-2012, 12:04 PM
After my dealer assured me there was no adjustment on the SRM 260S carburetor, I rebuilt it twice, and finally replaced it, without seeing the small hole with the adjustment screw. I finally gave up using it until the above post that said where the adjustment was. A simple mixture adjustment made it start and run great.
Many thanks for the information.
Charles Ranheim

XPLRN
10-15-2012, 10:05 PM
After my dealer assured me there was no adjustment on the SRM 260S carburetor, I rebuilt it twice, and finally replaced it, without seeing the small hole with the adjustment screw. I finally gave up using it until the above post that said where the adjustment was. A simple mixture adjustment made it start and run great.
Many thanks for the information.
Charles Ranheim

That's great, Charles, that you got your carb issue resolved with the info found on this website. I can also 'Echo' your success story as I just came in from running my SRM260 after going thru the saga of chasing the problem of no off-idle performance. After removing the plastic plug hiding the high-speed adjustment screw I went ahead and set the adjustment at 1.5 turns out just for a baseline starting point. I also went ahead and gutted the catalytic element out of the muffler and opened up the muffler exit port for better exhaust flow. I've done this on numerous of my chainsaws with notable performance gains.

It's amazing.......I bought this SRM260 back in the spring of 2007 and have ran it a fair amount over the past 5+ years. Nothing close to commercial usage but just taking care of my acre+ country property and my wife's home(small lot in town). This is the STRONGEST this tool has ever ran since new..........I am truly happy with the current operating status of my SRM260!!

XPLRN
10-18-2012, 06:17 AM
Finally got the pictures uploaded to Photobucket....here they are.

Overall location to start finding the hi-speed adjustment screw in the purple circle;

http://img.photobucket.com/albums/v661/XPLRN/2012/Echo%20SRM260%20Trimmer%20Pictures/Overall_zpsb4b4e9a6.jpg

Closeup;
http://img.photobucket.com/albums/v661/XPLRN/2012/Echo%20SRM260%20Trimmer%20Pictures/Closeup_zpsd247ac44.jpg

Extracting the nylon plug;
http://img.photobucket.com/albums/v661/XPLRN/2012/Echo%20SRM260%20Trimmer%20Pictures/IMG_0757_zpse216d084.jpg

Well here is the elusive nylon block-off plug that hides the high-speed adjustment screw;
http://img.photobucket.com/albums/v661/XPLRN/2012/Echo%20SRM260%20Trimmer%20Pictures/IMG_0756_zpsb9cb3f76.jpg

There are some nylon chips inside the hole but there is a slotted adjustment screw in there. I gently seated it and then backed it out 1.5 turns.
http://img.photobucket.com/albums/v661/XPLRN/2012/Echo%20SRM260%20Trimmer%20Pictures/IMG_0759_zps590f423d.jpg

copotay
02-04-2014, 09:04 AM
Old to the thread, but tks alot for the pics to find the elusive plug, helped out greatly

XPLRN
02-04-2014, 09:57 AM
Old to the thread, but tks alot for the pics to find the elusive plug, helped out greatly

If you were referencing the pictures in my post above yours you are very welcome!! Between the muffler modification and the hi-speed carb adjustment my SRM260 is running better than it did when it was brand new!!

ed2hess
02-04-2014, 11:10 PM
If you were referencing the pictures in my post above yours you are very welcome!! Between the muffler modification and the hi-speed carb adjustment my SRM260 is running better than it did when it was brand new!!
I agree I still got 5 in service the guys love the lower weight. Sadly most Echo owners never figure it out.