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Echo srm 211 will not run at high speed dies when acceleration is used rebuild card still the same

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Echo Srm 230 bogs down at full throttle. Replaced carb with oem.Removed muffler no carbon build up. removed spark arrestor. adjusted high jet on carb still bogs down

search --workshop manual for Walbro carburetors
down load the pdf version
search --workshop manual for Zama Carburetors
down load the pdf version
the high speed needle is set first ( one closest to the air filter) to obtain smooth high rpm running then the idle needle ( next to the engine ) is adjusted as you slowly slow down the rpm
final idle speed is achieved by adjusting the throttle screw and should be just slow enough that the centrifugal clutch is not engaged

Jul 28, 2018 | Echo Garden

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Echo srm 225 runs at idle speed only. Squeezing on the fuel lever has no affect on the speed. Any other ideas?

check for a cable disconnected at the trigger
if you can move the throttle lever on the carby and it makes no difference then there is still a problem in the main jet of the carby

May 30, 2018 | Echo Garden

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My echo srm-230 starts on choke but dies when you

air leak in between carb/engine or at the crankshaft seals
low speed adjustment
dirty carb

Oct 18, 2014 | Garden

1 Answer

High speed jet adjustment

the carb is dirty take the card apart the dirt is clogging the float

Aug 14, 2012 | Echo Garden

2 Answers


For all others with String trimmers, blowers and other 2 stroke style engines...
If no power on high, tends to bog, won't run once choke off, check these:
  • Fuel Filter - It's IN the Gas tank; Just replace it
  • Spark Arrestor at Muffler, it's a screen that tends to clog up and causes very restricted exhaust flow
  • Spark Plug - again just replace it
  • Carburetor, clean or install rebuild kit
  • And adjust sorta hidden High/Low carburetor adjustment screws
Take a look here...

And here:

And one more...

Aug 10, 2012 | Echo Garden

3 Answers

My Echo Leaf Blower (PB-251) will not run at high speed. It is running to rich. Help please. Charlie

I've been fighting with an Echo PB-251 blower and an Echo SRM-225 string trimmer since near the end of last lawn season (this is the forth season I've had them). Along comes a thread on a firearms forum and lo and behold the answer to the problem is spelled out in terms even I can understand.

After reading that thread (which attributes the problem of the engine bogging down when throttle is activated to collapsing fuel lines) I was going to just replace the fuel lines, but I discovered that there are kits that include new fuel lines, rubber grommets, filters, clips and cap seals for about $13.00 each. Hell, the kit for the SRM-225 even provided a new primer bulb. Ten minutes after the UPS truck delivered them to my door I had both machines running like new again. If you've tried other things and it still hasn't worked I highly suggest you try this.


Jan 05, 2011 | ECHO, Inc. PB-251C Handheld Blower

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My srm 230 locked up while running. Is this a common problem with echo?

If the engine has locked up, it is usually due to either overheating, or lack of lubrication. The SRM series of trimmers requires a 40:1 fuel mix. If you were not using 3.5 ounces of 2 cycle oil per gallon of fuel, then most likely the engine locked up due to a lack of lubrication. To determine the cause, remove the muffler from the engine and visually inspect the cylinder. If there is scoring and scratches on the muffler side, then it has overheated. If the scoring is on the carb side, then it is a lack of lubrication. Overheating is usually caused by a lean condition. That means too much air, and not enough fuel in the cylinder. A lean condition is frequently caused by the carb being out of adjustment. Most manufacturers recommend to rebuild/overhaul the carb every 50 hours for low level units and every 125 hours for mid-level units and every 300 hours for commercial units. The SRM230 would be considered a mid-level unit. See the emissions label on your unit to confirm. Echo is a very good quality manufacturer. In my shop, I perform maintenance on many Echo units. I typically recommend a tune up to my customers every other year. I hope this has been helpful.

Dec 01, 2010 | ECHO, Inc. PB-251C Handheld Blower

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