2-Stroke Carburetor - Get 'JACKED' with Knowledge that Most Don't Know! (by Craig Kirkman)

[@TheRepairSpecialist]

Hi guys I just wanted to Introduce to you my other Channel "Kirkman's Academy" - which i'm just getting started. It's a go-to channel for simple explanations for hard to grasp subjects such as physics, maths and chemistry etc. Here is the link: www.youtube.com/@kirkmansacademy/videos . Thank you so much for looking, and if these topics interest you then I hope to see you the there. Many thanks indeed. Craig 😊👍

[@100vg]

Your way of describing how these various carburetors work, made crystal clear by you diagrams and arrows to show the flow, then the animation of it all, allows anyone to understand what each part is, how it works for both understanding and troubleshooting. Thank you, Mr. Craig.

[@TheRepairSpecialist]

Wow. Thank you for your very kind feedback. I really appreciate it. Craig 👍

[@incidentalauditor]

That's right he does a better job than anybody on the internet I have seen!!! I mean I've actually diagnosed and resolved chainsaw issues not even gold level stihl mechanics could figure out solely based on my new found understandings of these intricate little machines that to on other machines lol

[@incidentalauditor]

​@@TheRepairSpecialistThis is why I tell ALL my customer neighbors and ALL my mechanic friends they need to watch you! Your 2 stroke series has save me LOTS AND LOTS of headaches and frustration. There is one thing I haven't seen you show, which I'll nkt reveal just yet, but I haven't watched all of your videos. I think we all appreciate your willingness to share your knowledge all whilst basically saying "listen I night be wrong make your own choices". Great work!!!

[@adnacraigo6590]

I had an understanding of how it works but never saw it in such detail. Thanks.

[@TheRepairSpecialist]

You're welcome! Thank you for your feedback. Craig 👍

[@eananstrain6817]

Stumbled upon this video by accident at lunchtime one day, not expecting anything particular. Holy crap this was fantastic! Really great video. You went to a lot of trouble creating the images in this video to explain how these work, its much appreciated. Fantastic video, thanks!

[@TheRepairSpecialist]

wow. Thank you for your awesome feedback. I really do appreciate it. Craig 👍👍👍

[@shajioommen7003]

Beautiful explanation. Interested person can understand it. Worth watching twice or thrice

[@stanblackburn700]

I love the teaching and theory that goes on in your videos. And I have to say that the design and engineering that went into the 2-cycle carburetor is genius. Thank you.

[@TimberTrainer]

Excellent information. I'm sure there are many of us that have installed components in the wrong order.

[@tonyhull5539]

Excellent. What more can I say except. THANK YOU !

[@TheRepairSpecialist]

You're very welcome! Thank you

[@donmayberryjrsOPE]

Craig a very informative video as always! I've been rebuilding 2-cycle carbs for more than 50 years and still always learn something by watching your work. You know, we don't give enough credit to the engineers who originally developed these carburetors, whoever they were.

[@TheRepairSpecialist]

Thank for your kind feedback, and I totally agree about the engineers that design and produce these needing more credit. Craig 👍👍👍

[@donmayberryjrsOPE]

@@TheRepairSpecialist Craig, any idea who they would be? Jeeez, back in the day right?

[@madyottoyotto3055]

@@TheRepairSpecialist I am reasonably sure you entirely missed the hi flow adjustment screw on this style of carb This style of carb IS NOT A SINGLE ADJUSTMENT SCREW If you look at the top of the throttle barrel that the cable attaches to in the centre of that is a large brass collar/screw you can see the rubber tube in the centre of the brass screw 19:43 Remove the rubber tube and there is a wee little adjustment screw hiding there to adjust that main jet needle On most verients at least hope this helps

[@TheJMan152]

Thanks! The other day I followed someone else's video series on diagnosing and repairing a two stroke engine. I followed his steps now knowing what was going on and got it working. This video helped me make sense of all those weird little pieces. :)

[@JonathonSisson]

This is an amazing video. Thank you for taking the time to put this together.

[@TheRepairSpecialist]

Thank you so much. Craig

[@markhearn392]

A fantastic video on how this type of carburetor works, will help diagnosis of fuel flow path etc: Thanx from down under NZ...

[@apavlov58]

This is the best video I have found so far explaining in great details the way 2-stroke engine's carburetor works. The animation makes it much easier to see the purpose of each small component. Brilliant....

[@MosquitoBait]

Thank you so much for this very educational video. I'm going to watch it several times to make sure I understand it well. Much appreciated.

[@TheRepairSpecialist]

Awesome. Thank you for your kind feedback. Craig 👍👍

[@wesbellmore6664]

Brilliant instructions…will be watching everything you make!

[@TheRepairSpecialist]

That's awesome. Thank you so much. Craig

[@IraqiVet]

Absolutely the best teaching video I've seen in this subject. Thank you so much for your time. I could sit down with you for hours asking questions. Take care sir.

[@TheRepairSpecialist]

Wow, thank you!

[@madchem184]

I learned so much from this video, thanks for the great information! I've actually fixed a few of those without actually jndeuhow they work. I'm sure the next repair will be so much simpler thanks to your video

[@darylkerr8058]

Really good the way that you explain and simplefi the part that your talking about. Im Daryl B Kerr from belfast, Northern Ireland

[@TheRepairSpecialist]

Awesome, thank you! Craig 👍

[@abylara07]

This is so detailed that I would like to know who woke up one day and said I want to make a small carburetor with small parts this is crazy cool awesome video

[@choihyuntae8064]

excellent !!! this is absolutely best teaching about carburetor . you are really best !!! thanks a lot !!!

[@TheRepairSpecialist]

Wow, thanks!

[@metheewatchakittikorn4796]

I always love your explanation. Thank you very much.

[@TheRepairSpecialist]

A huge Thank you to you. It really motivates me to receive comments like yours. Craig 👍👍👍

[@RamRaidAt4am]

Best explanation for how these little mysterious carbs work ever!

[@TheRepairSpecialist]

Thank you so much 👍👍👍

[@Mehle1705]

Thanks Mr. Craig for this excellent tutorial on carbs and how they function!!! I love being educated!!!

[@TheRepairSpecialist]

Thank you. I really appreciate your comment. Craig 👍👍👍

[@rafaelmenendezgarcia1304]

One of the best explanations. i have seen of this carburator thanks

[@TheRepairSpecialist]

You are welcome

[@JETTSET]

Excellent and thorough explanation. Your visual aids and diagrams were spot on. Well done sir.

[@TheRepairSpecialist]

Thank you so much. I really appreciate it. Craig 👍

[@robertbaysinger1309]

Brilliant job of explaining it. I've been working on this stuff for a couple years and thought I knew it pretty well, I learned something from your video. Thanks

[@TheRepairSpecialist]

That’s awesome. Thank you for your kind feedback. Craig 👍👍

[@courtneyroy270]

Love your show really, it's your voice and obviously huge knowledge, best of wishes

[@TheRepairSpecialist]

Thanks for listening. 👍👍👍

[@indikaprabash8084]

Great explanation….thank you very much…cheers from Denmark 🇩🇰

[@uadcro]

Absolute king explanation!! Already known a fair bit about the subject, but you explained it majestically!

[@TheRepairSpecialist]

Thank you for your very encouraging feedback. I really appreciate it. Craig 👍👍👍

[@kyriakosfotiadis]

Thank you very much my friend! You create the best videos for small engines! I'm following you from Greece and I wish you well!

[@TheRepairSpecialist]

Thank for your kind feedback. I’m really pleased you like my vids. Your country is beautiful. Me and my wife and kids heat there every year. Craig 👍👍

[@autobodhi]

This video is outstanding. You’re an absolute boss.

[@ericfuentes7163]

Incredibly great detail. Now I must go and see how these air fuel needles are adjusted. Thanks again!!!!

[@HipaStore]

Awesome video introducing how the carburetor works.

[@PaloRodriguez-mp3kk]

Difinitivamente, exelente. Hablamos de carburator, como limpiarlo ext. SABES como functions, no, no, no. Hoy se y tengo comfianza de arreglarlo. Thank U, CADA vez que Tenga necesidad de saber y aprender, ya se cual video bajar. Sin Duda alguna, El mejor. Amen.

[@TheRepairSpecialist]

Thank you 👍👍

[@bobs12andahalf2]

Much appreciated! Couldn't for the life of me trace the path through the darned thing

[@philliphall5198]

Thank You for teaching everyone how to fix there problems and correcting there mistakes 😊😊

[@TheRepairSpecialist]

Thank you

[@kc2972]

what a great lesson on these carbs...thoroughly got educated ...keep these lessons coming...i a hooked...

You are a genius explaining things like this...

[@TheRepairSpecialist]

Thank you so much. I really appreciate it. Craig 👍👍👍

[@KensSmallEngineRepair]

Another great video Craig, Knowledge is Power!!!

[@TheRepairSpecialist]

Thank you Ken. I really appreciate it 👍👍👍

[@boss-lyfe]

These videos are amazing. Keep up the good work.

[@TheRepairSpecialist]

Wow thank you. I really appreciate your comment 👍👍👍

[@69harescrambler85]

Over the years I've had mixed results rebuilding/tuning two stroke carbs, frequently giving up & ordering new ones, also with mixed results. 100vg's comment pretty much sums it up for me. Excellent presentation, now in my bookmarks. Thank you.

[@TheRepairSpecialist]

Wow. Thank you so much for your kind feedback. I really do appreciate it. Craig

[@porferio-wk4jl]

Thank you very much for the informative explanations. All of my days I threw away my carburetor whenever it got troubled. I thought that it wouldn't be repaired.

[@macknumber9]

Hats off to you my friend. SUPERB information. EXCELLENTLY done video mate

[@TheRepairSpecialist]

Thank you so much. I really appreciate it. Craig 👍👍👍

[@CrivRex]

I love these videos. It helps me troubleshoot my carbs very well. Now I see why my edger won’t start. Fuel isn’t getting in through the metering system bc the diaphragm is bad.

[@TheRepairSpecialist]

Thank you for your kind and motivating Comment. I really appreciate it. Craig 👍👍👍

[@terrymcdole6906]

Great explanation as always. Thanks

[@courtneyroy270]

Great show with the supply and return gold pipes is the supply one always the lower one and return one the higher, or did I get that wrong.

[@TheRepairSpecialist]

Yes I believe you are correct on that 👍👍👍

[@Pavol-Pivka]

Thanks for sharing. I've learnt a lot from you last 2 years.

[@alexabraham154]

This video was very helpful in understanding how this carb works. Thank you

[@TheRepairSpecialist]

You are welcome! Thank you

[@mehrzadrashidkhani3250]

Excellent explanation in technical details fully 👍👍👍

[@TheRepairSpecialist]

Thank y oh so much 👍👍👍👍

[@eamonnbrown7536]

Your videos & explanations are absolutely brilliant..

[@TheRepairSpecialist]

Thank you so much. I really appreciate you kind feedback. Craig 👍👍👍

[@lynnenux5763]

Fantastic video, must have taken ages to make. Thanks so much!

[@TheRepairSpecialist]

Thank you so much 👍👍

[@bbeauregard4181]

Excellent presentation! Well done.

[@TheRepairSpecialist]

Thank you so much

[@scottstape-lt9fg]

Excellent explanation of how these carburetor s. Work

[@ronaldreagan9018]

Great video very clear and informative keep it up you are amazing I definitely learned something.

[@TheRepairSpecialist]

Awesome, thank you! 👍👍👍

[@jicabe577]

Amazing, very detailed description. Congratulations, sir! Thank you very much.

[@splagyetsi3287]

Having trouble fixing my friends brush cutter. This help quite a bit.

[@TheRepairSpecialist]

Thank you so much 👍👍

[@dzsemadhs1816]

Thank you for this video from now i understand more how this work and i will try to fix my treamer

[@1cleandude]

Just subscribed because all of your videos are awesome!🙏🙏🙏

[@TheRepairSpecialist]

Thank you so much. I really appreciate it. Craig 👍👍👍

[@nikitasstratakos3361]

Very good job Craig. Congratulations!

[@BECHA1977]

Very detailed and helpful videos! Thanks a lot!

[@TheRepairSpecialist]

Thank you. I really appreciate it. Craig 👍

[@tommont1824]

Wow! The best I’ve seen yet

[@TheRepairSpecialist]

Thank you so much. Craig 👍👍👍

[@rimasbalciunas]

Thank you very much for such informative video.

[@TheRepairSpecialist]

You are most welcome 👍

[@highgatehandyman6479]

Great content. Ive got a 2 stroke Waxker Neuson BH55 Breaker and its smokey. Also sounds a bit gaspy when throttle is applied but does seem to run

[@TheRepairSpecialist]

Your Waxker Neuson BH55 Breaker may be experiencing problems with the fuel-air mixture, based on the symptoms you have mentioned. What you can do is as follows: Examine the air filter: A filthy or clogged filter can impede airflow to the engine, which can result in more smoke and a rich fuel-air mixture. Take off the air filter and look for any damage, dirt, or debris. If required, clean or replace the air filter. Examine the Fuel System: Look for any indications of contamination, leaks, or obstructions in the fuel tank, fuel filter, and fuel lines. Verify that there are no problems with fuel supply to the engine and that the fuel pump diaphragm is operating as intended. A problem with the carburetor adjustment may be indicated if the engine makes a "gaspy" noise when the throttle is applied. To guarantee the proper fuel-air mixture at all throttle positions, adjust the carburetor in accordance with the manufacturer's instructions. Spark Plug Inspection: Increased smoke and poor engine performance can also be caused by a fouled or damaged spark plug. Take off the spark plug and check it for wear, damage or fouling. If required, clean or replace the spark plug. Compression Test: To assess the engine's general condition, conduct a compression test. Low compression may be a sign of damaged or worn-out cylinders, which may be the cause of smoking and subpar performance. Professional Inspection: It's recommended to speak with a qualified mechanic or technician that specialises in small engines if you're not sure how to diagnose or resolve the problem on your own. They are able to perform a comprehensive examination and diagnosis in order to find and fix any underlying problems with your Waxker Neuson BH55 Breaker. I hope this helps a little Craig

[@highgatehandyman6479]

Nice one mate. I'm gonna look into it. I'll work on the carb and possibly the rings in due course. Thank you

[@srdporter]

Absolutely brilliant! Question if you don't mind. My carburetor is very similar but has the adjustment screw down the middle of the throttle barrel? I assume turning this will alter how much the needle will engage into the jet? Very fiddly trying to adjust (if that is indeed how I adjust the fuel delivery on this setup!). Have you any experience of this type? Thanks. Andy

[@madyottoyotto3055]

Yes you are correct see at 19:43 that his has a rubber tube blocking it This is the hi flow needle The low flow he shows in the video but calls it the fuel to air mixture The animation showed it had no way of limiting or adjusting the air flow So I would say it has to be the lo mixture screw and air is regulated by the idle limit screw he also explained So yes you are correct they do have a third mixture screw and it's the hi flow mixture screw they tried to hide a little too successfully for my liking Hope this helps

[@garycook5125]

Another information-filled video.

[@TheRepairSpecialist]

Thank you. I really appreciate it 👍

[@mikespain8655]

Is mechanic spelled differently in Great Britain? Looks like a Walbro carburetor. They are usually Zama and sometimes Walbro. Sometimes the check valves on primer block go bad. I really appreciate your thorough explanation.

[@TheRepairSpecialist]

Thanks for letting me know about the typo in the thumbnail. I will correct that ASAP. Craig 👍

[@philliphall5198]

Lots of check valve are damaged by air pressure and objects being pushed into them I see it alot in spring time

[@tharindutennakoon5816]

Wow excellent introduction ❤

[@TheRepairSpecialist]

Thank you so much. I really appreciate it. 👍👍👍

[@JoeStehly]

Very, very well done!!!

[@TheRepairSpecialist]

Thank you very much! I really appreciate it. Craig 👍

[@achihifi]

I have tune several of those and have discover an other screw below a rubber cover inside the bronce part in the top of the barrel, what do you think that screw is for? I've been using it to calibrate low rpm range, like an L type screw and then the in maximum rpm calibrate with the crew you explain in the video. Thanks for the video is very clear all the explain and diagrams you use.

[@1gurugraphics]

Wow it is really good explained video. It help me lot.Thanks 😊

[@JohnR9965]

Another awesome explanation….👍

[@TheRepairSpecialist]

Thank you for your awesome feedback. Craig 👍

[@nathanmccullough9312]

Amazing video, thanks.

[@TheKubelman]

excellent tutorial many thanks

[@TheRepairSpecialist]

You are welcome! 👍👍

[@noorjahansaidalavi343]

Veri good class, ok what is the different between 2 stroke, and four stroke

[@MrHadrian71]

Fantastic explanation! Can't thank you enough! Subscribed!

[@TheRepairSpecialist]

Thank you so much. Craig

[@gorgon9786]

Great video, sir! Still wondering how you've pulled of such thoroughly animations!. Stunning!.. I've seen some exactly same equipment failing the last month's!. Carbs so hard to start of a sudden.. Could it bee the E10 fuel?.. Do you have ideas on why this coming now?.. Machines will change some of the known physics-based guideline on working with E10.. Hard starters/will not start at all!.. Hope you could say something about self experience on this matter,.. And how to fix..?..

[@ProSaw70]

Brilliant video. Thank you.

[@TheRepairSpecialist]

Thank you. I really appreciate your feedback. Craig 👍👍

[@Mufakkir786]

Everything explained in a very scientific and academic way.

[@chucksmoko5348]

Great video. Thanks.

[@TheRepairSpecialist]

Thank you for your kind comment. Craig 👍

[@eeo.e]

This video makes it clear.

[@josephphiri4956]

This was worth watching ❤

[@JanDavids1955]

Really really excellent!!

[@TheRepairSpecialist]

Thank you so much 👍👍👍

[@frostfox1208]

I found a tiny tear in the primer bulb. Engine won’t start. I ordered a new bulb and will see if a tear is the problem. Thanks for the video

[@TheRepairSpecialist]

Yeh it should fix the issue 👍👍👍

[@everything4156]

Thank you from sri lanka 🇱🇰🇱🇰🇱🇰

[@TheRepairSpecialist]

Thank you for watching. 👍

[@lukesakail9101]

Love it..clearly delivered

[@EddyManfred]

Thank you 👌🏼 that was brilliant 👏🏻

[@TheRepairSpecialist]

You're very welcome!

[@Abc-kn5wj]

Quick question on that carburetor you have a brass can you have a brass tube that is bent you have two fuel lines that go into the tank which of those brass tubes the straight of the bent gets the fuel filter attached into the tank

[@dimitristobz1234]

Very WELL DONE !!!

[@TheRepairSpecialist]

Thank you so much. I really appreciate it. Craig 👍👍👍👍

[@pete194]

Thank you so much for your efforts!

[@TheRepairSpecialist]

Thank you also 👍👍👍

[@simonbehnke4756]

Do you have any basic settings for both the main adjustment screw and the tiny screw that is down the centre of the rotary valve? Im doing a favour for a local motoX group and their strimmer wont run. Put a new coil on as no spark but I think both screws out of adjustment and its constantly flooding. Thanks. Great videos too! 👍👍👍

[@TheRepairSpecialist]

Well, this vid of mine might help you here. It shows how i adjust these types of Carbs. Take a look and see if it helps: kzbin.info/www/bejne/ppyZc5asbbGEhc0 Go from here and then we can look into it further if this doesn't help you with your machine. Thanks Craig

[@justharryjohnson7250]

Another idea for a video. I own a paramotor (a basic 2 stroke engine with a walbro wb37 carb) I rebuilt the carb but overlooked the fact that I put the carb back on without the inlet spacer. (This goes between the engine and the carb) I tuned the engine and all was fine. Until someone told me. So I replaced it but in order to get the engine running right again I had to make it rich by around 3/4 turn. (Quite a lot for just a spacer) I know it will change the atmospheration but I didn't think it would be that much different) would you be able to go into more detail on this and 2nd question is if it runs with less fuel without the spacer would I not be better off removing it and tuning it to use less fuel ?

[@madyottoyotto3055]

I am fairly sure it's a safety thing mate Heat barrier to stop fuel warming Another hint too this is the fact they tend to use plastics Also having it setup to use a little more fuel is tactical because it reduces engine wear and heat How do you go about setting the carbs to perform at it's best when the oxygen is reduced from the altitude May sound daft but do you set them up half way up a really good mountain or something I always wondered

[@woodhonky3890]

Well done!

[@georgeiceman867]

Hi. Can you tell me why the purge bulb is not filling with gas all the way up ? Is filling only half with gas no matter how many times I press it. Is the culprit that red check valve that's underneath the purge bulb or is the other check valve that's bad ? I would much appreciate if you could give me an answer. Tank you sir.

[@beardedscrapper538]

Awesome video.

[@TheRepairSpecialist]

Thank you so much. 👍👍👍

[@GuysPlayingWithTools]

Great video.

[@TheRepairSpecialist]

Thank you. Craig 👍

[@james12372]

Sir what's the reason behind over flooding of fuel in the block and silencer

[@stevenchandler4218]

Thanks Craig...

[@TheRepairSpecialist]

Very welcome. Thank you t. Craig 👍

[@otsnew4823]

If the mushroom head is broken off the one way valve can that cause you to leak gas out the carburetor?

[@davewright522]

Excellent vid thanks

[@olinqua1]

Really good video

[@TheRepairSpecialist]

Thank you