Hidden Carburetor Adjusting Screws On 2 Stroke Weedeaters and Leaf blowers

Hidden Carburetor Adjusting Screws On 2 Stroke Weedeaters and Leaf blowers
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Easy to follow and thorough step by step tutorials do it yourself (DIY) videos to help you with your broken lawn and garden equipment including snowblowers.
I do my best to teach you how to easily diagnose problems the fastest, quickest and most efficient way with real repairs beyond just replacing a spark plug. These tips are for both the homeowner and shop owner.
Whether it be a handheld, two stroke, two cycle engine like a chainsaw, weed eater, weed wacker, string trimmer, grass trimmer, line trimmer, hedge trimmer, strimmer, brush cutter, leaf blower, or four stroke, four cycle units like a lawnmower, wood splitter, lawn tractor, zero turn mower, snowblower, pressure washer, generator or a ride on mower that needs parts installed or replaced, I’m your go-to guy.
My favorite brands of spark plugs are NGK and Champion and are the ones I recommend.
I’ve been a small engine mechanic for many decades and also run my own repair shop so my videos are loaded with tips and tricks that I have learned and want to share with you. You will also find many tool and product reviews from top brands on my channel as well.
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Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. DONYBOY73 “The Small Engine Doctor” assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. DONYBOY73 “The Small Engine Doctor” recommends safe practices when working with power tools, hand tools, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not DONYBOY73 “The Small Engine Doctor".
#donyboy73 #2stroke #walbro

[@donyboy73]

Watch my video on why your weedeater is always flooded here; kzbin.info/www/bejne/h2XRn5eZhclsbtE

[@Gods-Elect]

I bought a new carb for my trimmer ran two tanks of gas ran fine then next day or so i wouldn't start can't get it started, got spark even put new plug in still no start even put new gas line on any thoughts please thanks

[@RicardoPena-wf5ov]

Thank you my friend

[@Norn_z96]

💜💜💜

[@barrylee.freedman2203]

Your calm unhurried deliberate approach truly facilitates learning this material to a greater degree than with your peers (that is for me). So thank you!

[@mattxr6096]

Just want to thank you.. Watching your videos has allowed me to fix things myself. And be more self sufficient!

[@Daddyrabbit_2]

And ,that was the most informative video on hidden carburetor adjustments I've seen. Nice job

[@russellwatson2384]

Plastic caps on carb adjustment. Thank EPA, in the early 80's when most cars had carbs, EPA mandated restricting access to the adjustments which was in some cases a hardened steel cap over the idle mixture screw. It was a lot more fun to get it out. Be glad these plugs are plastic.

[@russellwatson2384]

best explanation of adjustments on this little carb. when removing the barrel throttle there is a small bushing (1.0-1.5mm) that will fall out. It goes on the small pin in the side of the bore and makes the barrel cam up as the throttle opens. If the barrel doesn't rise in the bore as the throttle opens, check for missing bushing. Thanks for the information.

[@mikewerner3797]

Omg I am working on an echo weed eater identical to the one in the video right now. I cleaned the carb and it did not solve the problem ( bogging when throttling up)so instead of gambling on the kit solving the problem, I just ordered a replacement carb. Wish I would have seen this video before I ordered it. I had no idea that the carb had any adjustments nor did I know about the tiny jet inside the little brass thing on the side. Thanks for a great tutorial!

[@chicoleek]

By far the best instructional vid I have viewed regarding these little carbs... very well detailed and shot, dony. I have been watching your work for years and can't thank-you enough for your work! Just a quick note for American viewers regarding those little black plastic plugs. They are apparently required to be in place if you are a 'pro' adjuster or you can be fined...this does not apply to homeowners, just business people. Thank-you, dony! You are first-rate!

[@adnacraigo6590]

Wow! They are really going to great lengths to make things difficult. Thanks for the info.

[@Mike-su8si]

Yup they don't want the shop guys fixing peoples stuff. they can't be that greedy to keep making things like that

[@GeirAndersenRepairs]

Awesome video Don! I had heard of hidden screws on the Zamas but I have never seen them in such detail. Very important information to have when working on small engine carburetors.

[@peejaygeee]

One of the best and most detailed videos on small machine on the internet bravo!

[@sburnham3]

Best description of High and Low adjustment

[@mrcelloava1076]

You explained the procedure very clear and to the point. I'm very impressed. 2thumbs up!!! Thank you.

[@philliphall5198]

Thank You. I’ve been watching for 9 years and you have done a great job 👏

[@V8SKULLS]

Donnie, "U" are a life saver my brother, I thank you so very much for this Video, this has been driving me crazy, replaced 3 carbs on 3 different pieces of equipment and no of them ever ran right, damn I Thank you for your time and knowledge. Daren'

[@sundial6919]

Your the greatest Dony boy ! I really like your penchant for exact detail ! 🌞

[@trainmanmills]

This video saved me a trip to the Echo dealer---I installed an after market new carburetor ($14.00) and still would not run up to full speed. Made the adjustment noted in this video on the high speed jet and it works just like new---the aftermarket carb did not have the plastic plugs to prevent adjustment thank goodness.

[@kermit30au]

Thankyou for this information. I never knew about this tool or plastic cap over the screws. After learning this I got very angry due to two workshops lying to my face.... Back in 2003 I purchased a rather expensive brush cutter that would never run right and needed to be returned often back to the shop I purchased it from. After the third month of ownership and constant breakdowns they started to charge me a service fee. I lost my temper with everything and just put the machine away for years. Years later I went to another workshop to get answers on why this machine was behaving so badly and they said like the original place purchased the device from the carburettor is "self adjusting" and nothing to tune. Ok sure I purchased a brand new carburettor from them and again the same bullshit all over again. So I just gave up with this unit and went 36v electric. I now find out there were adjustments and never needed to buy a carburettor at all. I felt I'm surrounded by thieving bustards and can't trust my local repair shops. Iv been tuning my own carburettors since I was a teenager and this damn thing had me beat. Once again thankyou for the information and help me solving this twenty year mystery

[@holdemNE1]

Thanks for posting. I knew about the one hidden screw, I didn't realize there were 2 of them!!

[@AlmostHeavenCamping]

I can’t thank you enough for doing this excellent presentation video!!!!

[@YukonHawk1]

I have a Homelite VersaTool weed Wacker that I bought for 2.50 bucks at a yard sale about 5 years ago. It was manufactured in 2001 with a walbro carb. Never had an issue in 5 years. ..but now I think the diaphragm bought the farm due to age. Thanks for the tips . I know the walbro differs from Zamas carb, but the theory still applies.

[@charlesoverton]

Great training . Thanks

[@jonathanhalverson2380]

Been watching your videos now for a while and wanted to say thank you for all the info along with tips and tricks that you've learned over the years. I have learned a thing at you watching your videos over the years and it has really helped out with some of my saw and small engine repairs. Just wanted to say thank you very much and keep up the good work along with the videos, God bless and be safe out there. John Halverson

[@donyboy73]

thanks John!

[@Sensei948]

Friend, is it wrong to leave the L-nozzle at full speed? Can the saw be damaged through the L nozzle?

[@aussiehardwood6196]

Great video Don I've done all sorts of work to saw carbs, drilling air bleeds, adding H needle to 3120xp, using micro drills to drill jets etc. But I've really learned something here today, the only zamma barrel carbs I have are on 2 Makita 231T (23cc top handles). And I just thought they were fixed jet carbs. I can't wait to now be able to do some tuning. Great video.

[@rogerringold616]

Too Touchy compared to ones w Hi and Lo screws.

[@KurtStevens-yi1jo]

Yesterday I wanted to adjust my carb on my Toro weedeater and I could not figure out where the screws were. Now I know. Thank you for the information. Great video.

[@johnrhodes7487]

Very informative. Thanks Don. John 🇬🇧

[@everettharwood7673]

Always the best straight facts… ALWAYS HELPFUL

[@leeharris3061]

Such a great channel for info!! Thanks so much for showing us this trick👍

[@pureblood324]

Love your videos very technical. Just what I needed.

[@darkside9129]

Excellent demonstration buddy.

[@gerardoflores1218]

Thank you for your help. You and another video are the ones with the best explanation.

[@PAYNEKILLER..]

I bought a echo weed wacker new this spring, it runs well but is pretty laggy, takes a bit to come to life and just seems like it should have better throttle response. I believe this video gave me all I need to remedy that.

[@donyboy73]

check the muffler spark arrester screen, it may be plugged

[@PAYNEKILLER..]

It doesn't have a ton of hours on it but I will do that. Thank you

[@rk22cc]

Yes great info Thanks

[@paulputnam2305]

Thank You for the Awesome information. I really appreciate you for sharing this video with us.

[@delotv2150]

Thank you !! I watched so many videos but you was the only one that gave me specific details !

[@bonzaibarty]

Excellent video! Thank you!

[@michaeljames2183]

Thank you sir! Very informative and detailed video.

[@clintstevenson1214]

Dude! I idolize you! Best Carb video I have seen. Thanks!

[@paullemay3218]

Great information. Thank you for sharing. ❤️🇨🇦

[@RollingEasy]

Excellent info as always..... Thank you.

[@joshherron7]

Best video I found that explains the high AND low adjustment 🤙🏻

[@johnreese3762]

Very well done, thanks!!

[@simonmorris8651]

Another great video - nice and concise, great presentation and videoing, thanks 👍👌👏

[@robertlay5108]

thank you my echo weed eater is realy acting up in the past couple of days its been runing ruff and back firers one,s in a blue moon i will clean carb and ajusted these sqrews

[@warrioryfm350x]

Your video saved me lots of time and money and frustration thanks

[@tomthomas9910]

When i do a tune on a carb " first i make sure no clogged fuel filter , right mix, plug gap, clean spark arrestor , possible carbon on exhaust port , older equipment" some are gummy bears" run slow allow for heat expansion rev warm " dial in the carb" lastly, weed eaters line at proper length so" under load, braaap braaat" max tune with 91" octane & 3 oz per gal especially being smokeless & ashless , remember when Castrol pre mix smelled almost as good as BBQ

[@netimage10s]

Excellent information!!

[@remowb]

Excellent and educational video!

[@nightmare69metalmatt52]

Bless you for this vid load of education here thank you thank you thank you

[@Mopar-Pioneer]

Hi Donny. Thanks to this vid I was able to find the hidden low speed jet on my German made line trimmer from Aldi and tune it properly !! Many thanks bud. Alex, ex pat Canuck in Australia

[@john0119]

Great Video! Thanks for Sharing 👍

[@metheewatchakittikorn4796]

Thank you very much.

[@Lovinflyindrones2022]

Brilliant video mate. Thanks

[@rpavlik1]

Great knowledge. You know that my two cycle equipment is old when I think all of them except my chainsaw have not-hidden adjustment screws...

[@user-ou6cq1ch6q]

Полезное видео! Спасибо!

[@geneblake]

Thank you!

[@DwayneDelacruz]

The speed you speak at is perfect for how I learn! Great video sir! 🫡

[@SheikShak]

Love to watch your videos…..you’re the best…thank u!!!!!

[@jimlondon1]

Handy to know this. Thanks for sharing.

[@yodasbff3395]

Good information to know 👍.

[@briancullen5183]

Thanks again Donyboy

[@johnnynewburgh9745]

Outstanding Don you do great work thank you!😁

[@pietrosenerchia1786]

Simply the best Dony, always informative. Great tutorial...

[@pietrosenerchia1786]

😊

[@williambowden1509]

Good Info Thanks.

[@tonym6920]

Thanks for the vid Dony, good to know. I replaced the carb on my Echo GT-225, ran fine right out of the box so I assume these carbs are pre-adjusted. Nice to know where those screws are located. 👍👍

[@barackobama5304]

They are probably close but every operating environment is different so the carbs should be tweaked.

[@1pearldrums]

Awesome video thank you

[@tjordan8146]

Thanks Donyboy! Been needing this and you made it happen. Great content. 👍

[@donyboy73]

have a good weekend Tim!

[@semco72057]

Those are nice tips and I have jewelers screwdrivers which should be able to adjust most of those screws and I have not had any problems with any of the trimmers I currently use, but now know what to do to adjust the carburetors. Thanks for sharing those tips and I wish you and your family a great week.

[@donyboy73]

thanks Sidney, have a great weekend!

[@louiegarcia7527]

thanks donyboy! you always do the best in explaing a solution.

[@andrewdickson9964]

Great video will give this a go in the morning 🌄 Thank you

[@gatorgotme]

Awesome Donny! Thanks

[@lizandromiramontes661]

excellent video thank you

[@fraydcat]

My Zama had a brass plug on both low and high speed adjustments on my echo SRM230. I used a T-10 star drive to get it out. It bites into the brass plug and I just wiggled it out of the throttle shaft. The other high speed was the same.

[@ncrdisabled]

thanks for the tips

[@georgebrown2937]

Good info , thanks

[@marknye51.thefixitguy]

Hello Doni.. I am working on that same carburetor which is on a Echo SRM 225 String Trimmer. This is the first time I've seen this style of carburetor with the hidden adjustment screws. Thank you so much for your video. . I'll be referring to this video tomorrow to see if I can get it to run. I also did a compression test and it's right about 88 psi.. Normally I see this with 110 to 118 psi.

[@MrModmustang]

Awesome. video thank you .

[@isidroizazaga950]

Thanks you very much

[@ellobo761]

Thanks again Sir!

[@DeWitteWilson]

Wow. Thank you.

[@pavolkucek1390]

Super video I'm watching from Slovakia.

[@donyboy73]

Awesome! Thank you!

[@stevejensen3471]

Nice that it's easy to adjust those zama carbs with it on the blower. Unfortunately, I have the Echo PB-250 with the Walbro carb where one can't do that. Pain in the arse that one is!

[@timgrant8729]

I came here for a different problem but your video was so well done and interesting I watched the whole video. Thanks!

[@donyboy73]

Glad to hear it!

[@williamtolli1450]

thanks for the info

[@99andrianmonk]

Great video, Don. Very helpful and a practical solution to a common problem on equipment that's a few years old from my experience. Would like your view on using a tach (Mini-Tach or other similar device) to set the adjustment screws. Also if you prefer one tach over another.

[@Ray_ray11]

Hi. I have tachometer/hour meter on both my lawnmowers. It helps keep an eye on RPM and hours the mowers have done. There are lot's to choose from on Amazon. I paid about 16 UK pounds each and I am happy with them.

[@chejohnny3706]

great vid/info. esp the hi speed hiding spot

[@mathewsuperville1739]

!Thank you!!

[@robertgoora]

if there was an academy award you would be the winner of THE GOLDEN CARBURETOR AWARD !!!

[@Bungi81]

Great video, Don! Thanks. I´ve had a hidden L-screw on a cheep chinese trimmer... After (finding and) removing the black plug it was easy to adjust the carburetor 😉 Greetings from germany, Stefan

[@donyboy73]

greetings from Canada!

[@TheRustyRooster]

Now that my good sir is some valuable information thanks for sharing 👍

[@frankdodaro2522]

Hey great tips 👍

[@rogerford4427]

Very good info. 😃🤙

[@888HUSKERS]

Very ironic because my neighbor was using his Echo and it was bogging hard every time he pulled the trigger. Great timing and awesome content!

[@rogerringold616]

Mine does it at about 20 minutes, boggs under load more and more.

[@rogerringold616]

Its a new carb...it still sucks.

[@johnchung6900]

excellent

[@Daddyrabbit_2]

And check the muffler if that echo is bogging down,they carbon up real bad

[@loug4626]

Excellent. Thankyou as had similar issue just other day, Great timing :-)

[@nashguy207]

Great video Donyboy! Hope your wife is doing well.

[@donyboy73]

thanks buddy

[@wehtjns]

I didn't know this, great video as always. Thank you

[@donyboy73]

Thanks for watching!

[@TheKrayusKorianis]

I recognize the C1Q-S76 carburetor whenever I see it 🤣. I've been into a 250 so many times.

[@robertbrookes7126]

Top Man!