String Trimmer Carb Cleaning

Cleaning the carburetor on a Troy-Bilt TB525 4-cycle string trimmer. In a previous video ( • String Trimmer Tune Up ), I gave this string trimmer a tune-up and replaced the deteriorated fuel lines. It still wasn't running as good as it should have, I had to leave the choke on half way for it to be usable. I had a suspicion that pieces of the old fuel line might have made it into the carb. This procedure can be used to clean any small engine carburetor. See the links below for the parts and tools I used:
Carb Cleaner:
amzn.to/2HhQLdN (affiliate*)
*Purchasing from these Amazon affiliate links earns my channel a small commission. Think of it as a tip that doesn't cost you anything. Thanks for the support!

[@Mikeattempts]

Carb Cleaner: amzn.to/2HhQLdN (affiliate*) *Purchasing from these Amazon affiliate links earns my channel a small commission. Think of it as a tip that doesn't cost you anything. Thanks for the support!

[@kendellburgess7712]

😊pp9pp

[@JudahEyes]

You do such a nice job to allow the camera to focus on objects close to the lens, which a lot of people have trouble with. Keep up the great videos!!!

[@Mikeattempts]

I really appreciate that comment because autofocus can be a pain sometimes but I try to show the stuff I'd want to see as a viewer. Thanks for watching!

[@mark9378]

Shout-out from down Under Australia, great video, thanks mate. 🤙🇦🇺

[@Mikeattempts]

G'day, thanks for watching! :)

[@glencabbage52]

Thank you sir. I've got multiple gas powered machines that have quit on me and I'm sure that in each case, the carburetor is the culprit. I've been wanting to learn how to clean & fix them for a while now; your video is giving me the confidence to give it a go. Thanks.

[@Mikeattempts]

That's great to hear, let me know how it goes and thanks for the comment! :)

[@devo9495]

Keep up the great work… video quality, pace, and succinct narration puts your videos in the top 5% of “how to” content on KZbin. It’s only a matter of time, content, and massive luck until your channel blows up! 😂 PS I’ve had a similar set of Craftsman drivers for 30 years. Many things diverted from landfill with those tools :-)

[@Mikeattempts]

Those are some kind words, I really appreciate the comment, thanks for watching! :)

[@Bendc1970A1]

So lucky for me that the first yt video I clicked on is the exact same problem I have with the exact same string trimmer. would not feel confident doing this without your help.

[@Mikeattempts]

First video? That was pretty lucky! :)

[@larryford-hq5nb]

This was perfect. It was orderly video was clear, some acts were clarified. This was exactly my problem.

[@Mikeattempts]

Thanks for the feedback, I'm glad the video was helpful! :)

[@clatonblade2211]

thanks for the video,.Mine would not start and was putting off cleaning the carb, it was actually really easy but that tiny little spring and needle. i did right by bringing it to my desk to get comfortable and take it apart. its a really old weed eater and always started great! 4 pulls choke, 1 pull half choke and away you go. was heart broken for a second it would not start afterwards! but turns out now that i rebuilt it it starts prefect first pull on half choke setting then runs great. i have no clue why lol. i had to reuse the old gaskets they were not great and the little butterfly flap thing the choke controls appears to work normal but now it just does not like full choke anymore.

[@Mikeattempts]

I'm glad to hear the video was helpful, it sounds like you did a good job, and it runs better now than it did before! :)

[@clatonblade2211]

@@Mikeattempts runs like a champ! and getting all the chores done.

[@Mikeattempts]

@@clatonblade2211 Awesome!

[@PaloRodriguez-mp3kk]

Exelente video. Explication muy Clara y Al Punto, sin salirse del tema amen

[@Mikeattempts]

Thanks for watching! :)

[@waleedacca]

Thanks for sharing, I'll follow same steps for mine

[@Mikeattempts]

Thanks for watching! :)

[@HopsandHedges]

Great video! This helped me so much!

[@Mikeattempts]

That's great, I'm glad it was helpful, thanks for the comment!

[@rafaelalarcon8299]

This was helpful. Thank you.

[@Mikeattempts]

Glad to hear it, thanks for the comment! :)

[@Shifty761989]

Excellent, thanks!

[@Mikeattempts]

Thank you for watching! :)

[@alanlambert-bz4to]

That is the Carburetor that is on my (TB304H 4 stroke.) My problem is one of the 4 screws that hold the trimmer bulb on is loose and will not tighten. My shop I used to order a new carbwas sent the wrong carb. It had 4 hose connections on it. They ordered the other listed part but have not got it in.

[@Mikeattempts]

It sucks that one of the bulb screw holes is stripped, hopefully they get you the proper replacement this time. Let me know how it goes!

[@alanlambert-bz4to]

I found my carb on another model TB304S that is the same one I need. I need to go back to them and show what I found.

[@maddmavic]

I have a cpl.that start n idle fine but bog to death when give throttle. Does that mean carbs dirty

[@Mikeattempts]

I'm no pro but, in my experience, cleaning the carb has always fixed that issue for me.

[@yearRBLX]

Do u know what that spring is called so I can buy one for my carburetor mine is missing please answer

[@Mikeattempts]

There were 2 springs in my carburetor but, if you can find a carburetor rebuild kit for your exact model it should include the springs. Sometimes they don't sell carb kits for carburetors this small, and your only option is to buy a whole new carburetor.

[@yearRBLX]

@@Mikeattempts I found on thanks

[@harridperez9051]

Wow thanks🙌🙌

[@Mikeattempts]

Thanks for watching! :)

[@bobbaxter952]

I've got a strange problem with an sgs 5 in 1 tool.Was using it today and this large hedge was kind of awkward and for a brief period i had the motor of the tool upside,it ran ok then started to stutter and break down then wouldn't start!!Now with it being upsude diwn i thought cwr problem maybe a bit of dirt got trapped somewhere,i've taken carb apart and cleaned it twice and it fires for a second like it wants to start but quickly dies. I then checked for a spark and i couldn't see anything??Could the sputtering while cutting the hedge just have been the coil breaking down??

[@Mikeattempts]

It sounds like it might have shut off because it wasn't getting enough fuel when it was upside down. Have you tried another spark plug? Pump the primer bulb a bunch to make sure you get all of the air out of the lines before trying to start.

[@bobbaxter952]

@@Mikeattempts Well i cleaned the spark plug,i didn't have another,i'll try the bulb pressing more,thanks.

[@briarsharrock3172]

Great video

[@Mikeattempts]

Thanks, I appreciate it!

[@beatrizperez1604]

How can I get just the diaphragm for a hyper tough 2020 2-cycle weed eater

[@Mikeattempts]

You'll need to look for a model number on the carburetor and see if you can get a rebuild kit. They don't have rebuild kits for some smaller carbs, just a whole replacement carburetor.

[@ce9xy]

posso chiederti consigli per un mio decespugliatore difettoso?

[@Mikeattempts]

I'm not a pro but I'll help if I can. What problem are you having?

[@ce9xy]

I have a brush cutter that loses power when I accelerate as soon as it warms up, everything has been replaced, I don't know where to go to mess around

[@Mikeattempts]

@@ce9xy So, the carburetor, spark plug, fuel filter, and air filter have all been replaced? If so, the only thing I can think of is that maybe one of the fuel lines is twisted or kinked. That could allow enough fuel to start and idle but not enough to accelerate.

[@ce9xy]

@@Mikeattempts I have a new breather filter, new spark plug, new fuel filter, new air filter, new membranes, after 30 seconds of heating it seems to lose power

[@Mikeattempts]

@@ce9xy Did you check to see if the fuel lines are twisted or kinked?

[@Corney279]

To bad the $20 Chinese carb kits on eBay come with the wrong throttle connections.

[@Mikeattempts]

Oh really, that sucks. Sometime the aftermarket carbs work great and other times they aren't quite right.

[@thomasadams8703]

HE FOR GOT TO TIGHTEN ONE OF THE CARB MOUNTING SCREWS

[@Mikeattempts]

I did? Maybe I just didn't show it. I don't think it would have run if it was sucking air from the gap between the engine and carb.

[@rollinnontwo276]

Great video

[@Mikeattempts]

Thanks! :)