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Echo SRM260S trimmer shuts down after about 30 minutes of use. Just like I've hit the kill switch. Will restart immediately and operate for a few more minutes but won't run full throttle and misses and quits again. It'll do this repeatedly. If it sits and cools it will start the cycle over again. Replaced carburator and spark plug but didn't help.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: craftsman 25cc edger has trouble starting. once started it will run for 5 - 10 minutes and then shut shut off. Will not start again until it cools down. Changed the spark plug , but it has the same pr

Dump the fuel in the tank, get new gas and new oil and start over. Get a carbeurator cleaner additive for the gas as your carb. is dirty resulting in the sporatic operation.

A spray carb. cleaner that you squirt into the air intake by removing the air filter will also work for you. In fact, when you are getting the carb. cleaner get a new air cleaner and a new spark plug. get back and let me know how u make out.

Posted on May 20, 2009

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panilling9
  • 284 Answers

SOURCE: Troy Bilt 4-cycle trimmer won't stop!

Take the switch so it is accessable
take the two wires and touch them together or hook them together bypassing the switch
does it shut off or it should not have spark?
if so you have a bad grounding problem if it does not shut off,if it does your switch is still bad
2 wires one tied to ign. module and other to a metal ground all the switch does is dead short. the igniton to shut down the spark and in turn kills the engine.
Be sure your grounding is tight and clean and all wires are intact and making good contact to their designated areas (no broken wires)
hope this helps some for you

Posted on Jun 13, 2009

Thermo King
  • 593 Answers

SOURCE: trimmer will only run for a few secs then dies out

First, use the same oil and mix it the same from batch to batch, once you have made a batch (gallon or what ever, never add gas or oil to make more, use up the batch to the last drop, then make a new gallon). Be sure the air filter is clean, some are oil wet to catch more dirt, clean and spray it with a spray cooking oil. Next: Look for 3 adjustment screws on the carb. should be three total. 1 screw is for idle adjustment. the other 2 should be close to each other, one is low speed fuel/air mix and the other is high fuel/air mix. Adjust the low fuel/air mix screw until it will idle un-added with the throttle then adjust the idle on the throttle to get a good idle speed. Next adjust the High fuel/air mix until it gets the RPM's you want it to have. It should go from idle to high speed with out hesitation or cough. .

Posted on May 30, 2010

hunter19_46m
  • 7482 Answers

SOURCE: I have a Troy-Bilt string

Hi rskeller...

Sounds like you have dirt/debris in your carburetor jets,fuel passages or a diaphgram that is becoming non-flexible.
NOTE: Before you dissemble the carburetor:
Make sure you mark each piece with a awl, or some kind of instrument that will make an alignment scratch before you dissemble the carburetor into separate pieces.
That way you will know which way it goes back together when you reassemble it.
Be sure to check your fuel tank for water and dirt/debris, if there is water/debris then you need to clean your tank.
Also check you fuel line condition after a while they will degrade and need replacment.
Make sure you are getting spark at the spark plug, to do this:
Remove your spark plug and check to be sure you are getting fire at the spark plug.
You do this by grounding the plug on the head of the engine and pulling the crank rope, if you are getting spark then:
Check/Clean/Replace your fuel filter if you have one, normally they are located in the fuel tank of weedeaters.
When you remove your fuel lines from the carburetor be sure to make a drawing to how the lines are connected to the carburetor.
Normally the big line will be the line the fuel filter is connected to inside of the tank.The smaller of the two lines is the return to the fuel tank from the carburetor after it is pumped thru the carburetor by the primer bulb.
Also make sure you are using fresh fuel...and oil mix if your using a two cycle mower or weedeater with the oil to the right mixture and not too much oil as it can cause hard starting.
If the mower/weedeater is over a couple of years old, then I 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.
Sounds like you will need to clean the carburetor or replace your carburetor internal rubber parts like the diaphgram and O rings.
I recommend that you use a laquer thinner type cleaner to clean and dissolve the laquer build-up in the float and needle jet passages.
Be sure to remove all plastic and rubber parts before using the laquer thinner because it can dissolve the plastic parts and render them unuseable.
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 (if you have one) for the carburetor must be level when you go to reassemble the carburetor or follow the instructions you get with the carburetor kit.
When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.
But before you lightly 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 lightly seat them first and then turn them back out to their original position before you started.
Once you have your carburetor rebuilt that should solve your problem.
This is a FREE answer,Please take time to rate me

Posted on Jun 25, 2011

  • 316 Answers

SOURCE: 2 cycle Echo weed-eater is slow to start and once running it dies at idle. Only operates at near full throttle.

hello sir, my machine will only start when pumping primmer bulb or squirting fluid in the carburetor than stops. the fuel line has broken off, in most small carburetors this is a ongoing problem.old fuel will crystallize when left in tank for a long time.plugging up ports, fuel lines, small screen in carburetor.fuel lines will dissolve clogging carb.this is why it will run when the choke is on creating a vaccum to where there is fuel forced in the carb to rum,also the gas will evoporate leaving the oil behind clogging up carb.the thing to do is remove carb. and clean out,replaceing gaskets or fuel line if necessory.use carb cleaner to clean out carb.make sure to make note where fuel line go.the fuel filter broke off of fuel line letting debris get in carb plugging it up.the muffler is known to clog up a lot on these machines where thay want run. the compression should be 60 to 120 lbs any thing below 60 is junk. when adjusting the carb screws turn in all the way than turnout 1 1/4 turns turn in slow untail machine runs also you need to check for spark by removing plug and grounding aginst engine to chech spark, ok.a new spark plug would be a good ideal too , if you are going to make these repairs use new fuel line and filter,hope this helps,any comments welcome,thank you, ``

Posted on Feb 18, 2012

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1 Answer

I have a newer 58v Echo trimmer. Worked fine last season, but when I use it now it runs for a few seconds and then completes shuts down. If I try again, it runs for a few seconds and stops again.


This appears to be a good news problem. There is an easy fix/work around! Consumer reports found the same problem that you have discovered.

Holding down the check battery switch allows the unit to operate. Read the link around the sixth paragraph the story is told.

Echo Trimmer Can Be Tricky to Start

"Our testers discovered the fix by chance. Pressing the check battery button, a last-ditch attempt to get the trimmer working, made all the difference. While this button ordinarily indicates the battery's charge status, in this case it also served to keep the battery from switching into protection mode and cutting off power to the motor. The next time you fully charge the battery, however, the problem can reoccur."

Hope this has helped?

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1 Answer

Running great but shut down mid ride. Acted Like the kill switch was hit. Checked the switch it was fine. Started right back up. Ran for another minute then shut down again. Plugs have spark, fuel...


My guess is that this is not a car or truck, but rather a 4 wheeler. It may have a low oil shutoff, or bad coil that fails as it gets hot, but hen cools a bit and seems fine. Check for spark immediately as it fails.

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1 Answer

What could cause the trimmer to shut off affter running for 15 to 20 mins as if you just hit killed switch??


That\'s what\'s know as coil heat soak. Inside a transistorized coil pack which is what you have that makes the spark happen, there is a small circuit board with diodes and stuff. Sometimes one will go bad from time or use, usually hard use, and when it fails, the engine will run a while then reaching a certain temperature, the diode will kill the coil as if you had hit the kills witch and stop the spark. The aluminum of the engine dissipates heat quickly which is a reason why engines are made with that material, and thus will restart after a few minutes as if nothing happened. You need to replace the coil. There is something further, if the breather built into the gas cap or gas tank gets clogged or becomes inoperable, the vacuum created by the fuel system that allows the fuel to continuously be sucked into the carb and engine will have no way to replace the negative space created by the missing fuel in the tank with air, so it will essentially choke itself to death and the engine will shut off and not start until you open the gas cap and let in some pressure to equalize the vacuum. But that\'s slow and you can feel it happening like the machine is running out of fuel, the heat soaked coil is immediate just like switching the I/O button which is basically what\'s really happening. Hope this helped you.

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1 Answer

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Keep a can of WD 40 handy, spray the workings regularly. Shrubbery is sticky.

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Hi, have you tried a new sparkplug? Also did you set the coil to magnet airgap at 8 thou? Also when you say you by passed the kill switch did you do this by leaving the wire off the coil? Because if you did it at the switch end the wire from the coil may be chafed somewhere and earthing the coil. Hope this helps, regards Phil.

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Kinda backwards than normal operation I see string trimmers. It could a weird setup. Check the kill operation with an ohm meter. If it is a closed circuit in run and open in kill position you may electrical connection problem in the wiring.

But normally you ground the magneto to kill the spark. By leaving the wires off at coil you should spark and not when you ground it.

Post an comment back when you out what is going here as I haven't seen this before. This might explain some reports I seen about customers receiving electrical from some Husqvarna trimmers.

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1 Answer

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Remove spark plug and check for fire with a spark tester. (some inline models are also available and safer since the spark plug stays in place using those types)

If no spark:
Remove covers and unplug small kill-circuit wire(s) from ignition coil...Test for spark.
If you have spark the switch needs replacing.
If you have no spark the coil needs replacing.
Hope this helps.

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1 Answer

Which oil mix?


i dont know this saw,but 50 to1 is a heavier mix of oil and it wont hurt your saw to run it ,worst case it will oil foul your spark plug.if that happens just switch to your 40 to 1 ratio. but if you start at 40 to1 and your wrong you will starve the motor of oil and in time cause damage ti the cylinder ,piston ,rings,and barrings

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