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Awesome 👌 thanks for the video!

Would it have helped to run wide open for awhile to burn off any residues left in muffler before you put spark arrestor back on after you cleaned it?! Just curious

You know they make tri-pods for cameras and phones.

It will clogged up when you don't run it full balls. It will build up with carbon.

You did good. A useful piece of advice.

Thanks, Charles! I was almost ready to just go buy a new one till I watched this! Saved me some $$$

Yep, that was it…after I put in a new stihl carburetor, fuel filter, air filter, and spark plug…It turns out I just needed to clean something. 😡👍

A massive thanks for this video Charles. My KM 56RC was suffering the same problem, and I just assumed it was the carburetor. So, I bought a replacement, tried fitting it, and nothing changed. I had noticed over the years that the trimmer was slowly performing worse and worse. This simple fix has brought the whole thing back to life again. I was on the verge of just buying another trimmer. Awesome!! This video is the exact reason that RUclips should exist. Greetings, from down under here in Australia!! (Even though it's 6 years later :) )

Good job

Thank you for this video, because I was able to fix the trimmer myself, I was able to pacify my dad, who is a real piece of work who gets overwhelmed with how much he has to do. taking one thing off his list keeps him off my case easier.

Hey man thanks for the tip on the weeded bogging down at full speed mine just start do the same thing three days ago and I couldn’t figure out what the problem was.

Thank you for taking time to make this video!

For the last 18 months I've not let the lawn crew edge or use a weed eater in my back yard. ruclips.net/user/postUgkx_rBCFuDW1zD6blTGhLkvAkxU657uR_lG I didn't like the fact that they just kept cutting the edge of the lawn further and further from the rock lining the flower beds and leaving bare ground. And the grass was trimmed or scalped several feet around trees, etc. It was a constant battle with them so I told them to just mow and no trimming. I have Zoysia grass so it grows pretty slow. Obviously after a while it could use some trimming. I'm in my 80's so I can't do much of it myself.Finally I decided that if I could find a lightweight battery powered trimmer I might be able to do some light trimming. I decided to buy the LST201 20V trimmer. And it works great for my needs. I have back yard with about 150' of flower beds and several trees to be trimmed. I can lightly trim the whole yard with a single charge! The grass I trimmed was only a few inches high but the trimmer was more powerful than I expected.

Bingo! My trimmer works because of you. I had almost decided on buying a new one, but it works as good as new. Thanks!

Nice vid, I had the same problem.

Man God bless you!👍I am bout to give this a try. mine is doing that exact same thing hope it fixes it!

Dammit bro…this video was EXTREMELY HELPFUL 👍

very helpful video!

Exactly the same thing mine is doing new spark plug and air filter didn't help. So I'm gonna try this thanks so much for taking your time to share with us. Update: pulled the spark arrestor it was indeed clogged. Cleaned it with a torch now it runs like a champ. Thanks again for taking the time to share this with us

Pretty smokey, maybe your mix is a little rich? That'd make that arrester clog up faster. Very helpful video, you saved a lot of guys a lot of grief.

Sir Charles Waggle my man! I have the same trimmer and last couple times running it she was boggin like a beeotch. I found your video and it was EXACTLY what I needed and I can't thank you enough for the good instruction. Of course I later looked in my manual and of course it says this could be an issue. But, it doesn't say WHERE it is, or HOW to access it and it doesn't tell you how to CLEAN the screen. I used brake cleaner as you suggested and a short hair stiff fine wire brush. Took all of about 5 min to clean that screen out. Screwed her back into place and BOOYAH she runs at full throttle again with NO BOGGING. Thanks a bunch. By the way, to anyone reading this...the Stihl 56RC trimmer is FLAWLESS. I have to keep up with two acres of house and outbuildings and driveway edges and roadway edges etc. This trimmer is a BEAST and if I had to buy one all over again I wouldn't even hesitate to buy it again.

i took my spark arrestor off and ran trimmer for 2 years. Now I am having the same problem. What's in the muffler? do i need to take apart?

Hell yes brother, I have the same trimmer. I have another trimmer that's bogging down at full throttle, and this is probably why, awesome. Thanks.

You Just helped Me Thank's

Thanks for this video. This was the exact issue I had. Thanks for showing me how to fix it.

Hi... thanks for the video... saved me from an useless carburetor cleaning..!!! 👍👍👍

How to reassemble the handle of the stihl fs 56 trimmer

Every stihl machine i buy first 2 things guard gone spark arrestor gone

I took mine out years ago, you don’t need it.

Bro this actually works thank you very much

Thanks so much for posting this. It worked 100% and very easy. I called two repair shops and they both had at least a 30 day timeframe. I said what the heck and RUclipsd it and saw your video. Incredible!!!

Thank you sir!

Wow I never looked at that and I pulled it out cleaned it and now its running like a charm thank you sirr

Weed eater shouldn’t smoke. Gas is too rich and it will clog up again soon.

Lol! My Stihl FS56C suddenly started running rough at top end. This is the third video I watched. I was considering carb adjustments but didn’t think it would suddenly go from running well to poorly. Want chef this video with skepticism but took the arrestor out and mine looked EXACTLY like his. Cleaned with a steel brush and water and now it’s back running like a top! It’s the little things that should be checked first!! Great video!

Thank you

Thank you very much, my is doing the same way.

Thanks! I just wish I saw your video b4 I changed the carb. Aloha from hawaii

I bought new carburetor, fuel filter, spark plug, air filter, I was 10 seconds away from bashing this thing into pieces. And it hit me check out RUclips. Thank you for posting this video. You saved this weedeaters life. It stared and ran great first pull. Thanks again

I have same trimmer..same problem

That is an oil free filter oil in the filter will block air from the engine

Tim S 8/4/2022 Video was every helpful not sure if the spark arrester was the primary issue but I cleaned it up along with cleaning gas filter and air filter ,also dumped gas out of tank and filled with fresh 2 cycle oil gas mixture. took a couple pulls but trimmer stated but sputtered for about 30 second and then ran normal . Thanks for the video.

Man, you saved me. I was thinking it was time for a piston and ring. I had the exact same issue. Cleaned spark arrestor like you showed- my was completely clogged too- and voila … she runs great now. Thanks again CHARLES !!!

Yep, thats it. Thank you!

Hello Charles. I did just as you said and now my old FS 56rc works perfectly. Put simply, this video is the most useful and effective I have seen so far on RUclips. Seriously! Saved me lots of time and money. Well done and many thanks!

You are the best. Thank you so much for this great video.

So glad I found this video my trimmer IS FIXED NOW THANKS TO YOU AND I DID IT MYSELF

This worked for me as well. Thanks so much for the video!

Perfect! Your video was money!

So what yearly cleaning should be done on this Stihl weed whacker for it to be in tip-top shape besides the spark arrestor?