iFixit - Answers With Device "Echo Weed Whacker"

Echo SRM-225 Trimmer: Motor runs great but head won't spin? Help!

Sun, 01 Mar 2026 14:50:57 -0700

Why won't the head spin?

⟐ Commented March 01, 2026 at 14:50 MST

Echo SRM-225 Trimmer: Why won’t it pull fuel, all parts changed, and still no fuel :(

Fri, 16 Jan 2026 17:19:15 -0700

I have no idea why it won’t pull gas. It was running one day and then it shut off one day and never again after. I changed the plug, all filters, lines, gaskets, and bought 2 different carbs, and it still won’t pull gas. I saw it splatter out “once” (with old pump), and never again. It wants to run when I spray engine start-up fuel into it, but it won’t feed itself. The exhaust is clean, so it is not that, unless I missed something. But it’s just not “pulling” fuel in for some basic reason, where I am just too noobish to figure it out. I tried fresh new fuel with and without mix, not a chance. I don’t know engines parts well, but I am a little mechanically inclined. I did a compression test, and after ~3 pulls, it hits full compression. 120? Iirc, bcuz it’s been a minute since messing with it.

I got this response below from another person in another thread. But I don’t understand some of it. Like specific part(s) or location of it on the engine to exam, sadly I’m just ignorant. If anyone can post pictures explaining the below, I would be eternally grateful. But I feel like the post below is what I am missing. The weed eater wasn’t stored. I used it every weekend. And living in Florida, that is most of the year. I just can’t understand what cut it off out of no where, and caused it to stay off.

F Dryer wrote:

@John, 2-stroke engines using a gas/oil mix requires pulsed crankcase pressure from the engine to operate the diaphragm type carburetor. A small port between the crankcase and carburetor allows crankcase pressures to operate the carb to pump fuel into the engine. If the engine hasn't been used, stored without performing maintenance prior to storing away for several months, the gas/oil mix can congeal in fuel lines, filter and may clog the pressure port feeding crankcase pressures to the carb.

Where is this pressure port? Pic? Ty!

⟐ Edited by author January 16, 2026 at 17:19 MST

Echo Trimmer SRM2620: Wiring diagram I could really use one

Mon, 05 Jan 2026 19:42:51 -0700

Had a wire come out and can't figure out where it goes

Echo SRM-225 Trimmer: no vacum won't pull gas

Mon, 01 Dec 2025 20:23:00 -0700

How can you ck if it has vacuum? I put a new carb on it and the fuel bulb is full but no fuel in cylinder. Has 110 compression.

⟐ Commented December 01, 2025 at 20:23 MST

Echo SRM-225 Trimmer: Engine won't turn over

Sun, 30 Nov 2025 16:19:16 -0700

I am getting fuel, compression, and spark. Still won't start. Could the spark be too weak or is there timing on this small engine?

⟐ Commented November 30, 2025 at 16:19 MST

Echo SRM-225 Trimmer: only runs with the choke on

Tue, 09 Sep 2025 09:47:27 -0700

Mu trimmer starts but will not run when I shut the choke off

⟐ Commented September 09, 2025 at 9:47 MST

Echo SRM-225 Trimmer: My trimmer is eating the line instead of spitting it out?

Sun, 18 May 2025 04:03:23 -0700

My trimmer is eating the line instead of spiiting it out. What is happening?

⟐ Commented May 18, 2025 at 4:03 MST

Echo SRM-225 Trimmer: String line not cutting-cutting off

Wed, 16 Apr 2025 09:57:23 -0700

the string line is not cutting off. When i push the head down, more string is let out, but the excess line is tangling around the feedhead, and not cutting off when the line comes across the blade

⟐ Answered April 16, 2025 at 9:57 MST

Echo Trimmer SRM266 2020: Bogs then stops at full throttle

Mon, 18 Nov 2024 06:37:48 -0700

Okay so here’s what I’ve done.

Compression 110
Muffler and screen cleaned inside the muffler to the cylinder. Carbon free now
Installed a new carb fuel filter
Installed a new spark plug
Adjusted the screw under primer bulb worked with all adjustments to flow were the same unless I closed it up then it died no pulling needed. As I said when you open it up it sounds and performs the same idles good throttle up head spins for a second bogs down stops

I can not figure this out it takes 5 pulls to achieve 110 compression. Is my motor burned up or what? It’s starts will stay running sounds good

⟐ Edited November 18, 2024 at 6:37 MST

Echo Trimmer SRM266 2020: Why won't it start?

Tue, 26 Mar 2024 12:38:53 -0700

I've changed all the filters and even a new carburetor but it still won't start or run.

⟐ Commented March 26, 2024 at 12:38 MST

Echo SRM-225 Trimmer: Echo Trimmer Won't start

Sun, 17 Dec 2023 14:51:56 -0700

I have an Echo SRM 225 Trimmer. Full disclosure I left the fuel in it all winter. When I started the season it would start then quit, but re-start at a later point. At some point it just stopped starting. I took the following steps:

*Emptied the gas tank and put clean fuel in

*Cleaned the Carb with Carb Cleaning Fluid

*Replaced the air filter and spark plug

*Replaced the fuel line system

*Finally replaced the carb

It still won't start. Any idea of what else could be wrong?

Thanks

⟐ Commented December 17, 2023 at 14:51 MST

Echo SRM-225 Trimmer: SRM 225 - runs for 20-30 minutes - once hot stalls out HELP

Tue, 29 Aug 2023 06:33:33 -0700

Replaced carb, fuel lines, fuel filer, checked spark arrestor, use true fuel only - I am baffled

⟐ Answered August 29, 2023 at 6:33 MST

Echo SRM-225 Trimmer: Why does the head spin off when I push the trigger

Tue, 13 Jun 2023 02:26:36 -0700

Everything running perfectly, but now after I fed the lines in as described for replacement, I push the trigger, the head spins and then falls off into 2 pieces. The metal cap (see below that this may be an adapter) that the head screws up to and the head itself.

I screw the head back on ok after I put the cap up first, but it keeps happening.

No idea. Machine has less than 2 hours run time since last 2 years when I bought it.

This area is on the page R diagram. Only thing I can think of is Part 13, the plate adapter on diagram Page K is what is falling off, maybe it is broken due to pounding to get string to run our new length.

This unit had been very unresponsive to touching the head to get new line to fish out.

⟐ Commented June 13, 2023 at 2:26 MST

Echo Trimmer GT225 2019: won't spin when throttle is on

Fri, 12 May 2023 19:51:22 -0700

I am not sure how to ask this. I had a Maxicut Head attachment on it and it was running fine. one of the blades came off and then the head spun freely. I tried to put a new Maxi-cut Head attachment on and the end spins both directions and I can't put the new head on. I checked the drive shaft and it seems fine, what am I missing.

Echo SRM-225 Trimmer: Have replaced all basic and fuel will not run with out choke

Tue, 09 May 2023 17:10:24 -0700

I have changed out on echo srm 225 weed eater spark plug, fuel, air filter, fuel filter it will start with full choke but soon you start to turn choke down will stall out and also will not idle up when giving it throttle up speed does not change

⟐ Answered May 09, 2023 at 17:10 MST

Echo SRM-225 Trimmer: It will only run at half throttle

Fri, 11 Nov 2022 12:10:23 -0700

I bought a new carb and tune-up kit and replaced the old ones. I pulled the gas tank to check for any leaks. I replaced the gas cap. It starts right up and revs up to speed only to half throttle, anything past half throttle it bogs down dies. After I let it run for a bit and shut it down the hose that has the breather end leaks gas all over the place. Any ideas.

⟐ Commented November 11, 2022 at 12:10 MST

Echo SRM-225 Trimmer: Trimmer stopped suddenly while using.

Sun, 03 Apr 2022 22:39:35 -0700

Trimmer stopped suddenly while using. First time this has happened. I replaced the carburetor, all filters, spark plug, and the spark plug arrested screen. Still does not start???

⟐ Answered April 03, 2022 at 22:39 MST

Echo SRM-225 Trimmer: Will not start after running?

Fri, 02 Jul 2021 06:46:24 -0700

So, really weird problem… I have had this Echo for 15 years and it has been great. I have ran it to death. I have always been able to fix it but this problem has stumped me. The thing will run perfect. It starts on first pull. Then it will shut off after 30 min and it will not start again until it is completely cooled down. I am talking completely cooled down. I will need to wait up to 20-30min to start it again. Things I have down:

new carb
new hoses
new air filter
new spark plug
new gas
added more oil than normal

Thank you for your help.

⟐ Edited by author July 02, 2021 at 6:46 MST

Echo SRM-225 Trimmer: engine dies when throttle applied

Sun, 02 May 2021 09:35:50 -0700

Why does my engine snuff out when I apply the throttle

⟐ Answered May 02, 2021 at 9:35 MST

Echo SRM-225 Trimmer: Echo SRM-225 starts and dies

Thu, 27 Aug 2020 07:49:48 -0700

Have an Echo SRM-225. Put new everything, plug, fuel lines & filter and carb. It starts and dies. The spark plug is getting wet/fowled. Too much gas?????