How a 2 Stroke Carburetor Works, Fuel Pump & Metering
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- Опубликовано: 29 сен 2024
- In this video I explain how a 2 stroke carburetor works. I have 3D Printed a large scale model to make it easier to see. I also 3D Printed sections of the carburetor so you can see the internal workings.
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I am nearly 70 and it has taken me until your unbelievable video to understand the "simple" 2 stroke carb! your printed model just blew me away! Thanks for the incredible amount of time and effort you have put into this Jay, I am forever grateful.
Great demo
Amazing ! Thank you !
This might be the single best RUclips demonstration video I have ever seen! All I can say is wow, you have really knock this one out of the park! Major props on designing and fabricating that demo carb! The time and thought you put into the model is absolutely astounding! Bravo sir, bravo!!!
I instantly subscribed as soon as he pulled out the 3d printede model 😀
Amazing great detail thank you sir !
I'm saying... He definitely knows his business
Really great video. Thank you!
Great! Great job indeed👍🏽👍🏽👍🏽
Dude this deserves like, national recognition. This needs to be used in any educational setting for mechanics. Best video hands down
This should be the gold standard for any You Tube instructional / tutorial video. You have done a great job explaining in very clear terms and your 3d prop is an absolute work of art. Thank you for sharing this video.
That is the coolest 3D print I've ever seen!
A phenomenal lesson in chainsaw and weed eater carburettor principle and practice. Your models and props are better than anything I have ever seen before as teaching aids and your knowledge and calm systematic explanation is easily understandable. The preparation invested in this short class is mindblowing. Thank you so much, if I had received tuition of this quality at school it may well have changed my life.
A very professional explanation of this cube carburettor. Please help this guy out financially if you can.
Absolutely fantastic tutorial and 3D printed models! I'm Technical Director of a company that manufactures 3D printers and the time and effort put into Jay's 3D models is enormous, hours and hours of work needed to design and produce these models. Jay, you're a credit to engineers everywhere and your tutorial is 5* Thank you!
PS. I repaired my chainsaw because of your detailed explanation of the debris gauze at 6:42 on the tutorial - mine was so blocked up that I thought it was a 'plug' and not a 'gauze' which it proved to be after closer inspection and cleaning !!
Thank you. I've been stripping these down for a couple of years on my garden equipment and just cleaning them the usual way and blasting through the holes with carb cleaner and compressed air and fitting new consumables, then most of them work , but now I've got a difficult one to fix where that's not worked and after watching this, I know where the problem is likely to be. This weekend, I'll be out there taking a closer look in the affected area.
Update after a bit of time on the healing bench, its fixed !! The idle jet passages had a partial blockage
This is without a doubt the best RUclips video on how anything works that I've ever seen! The 3D Printed models are amazing and they (plus your excellent and easy to follow narration) make it easy to understand exactly how these carburetors work. Thank you for all the time, effort, and skill you put in to making this amazing video! I am now subscribed.
Excellent Teacher. Plain, articulate, zero “filler words.”
As for the demonstrative you’ve created?
It’s hands-down beautiful. Seriously well done Sir.
Your passion is contagious and inspiring.
Glad it was helpful!
Thank you Jay for all the time and effort you put into this amazing video. I am 67 and have been tinkering with these carbs for a while now and could never understand how they worked, until I found this video!! Thank you so much again!
I have watched many u tube videos from different channels that either do not really explain why they are doing something or show a very basic understanding of why they are doing something. But your clear explanation of basic principles is amazing. If only other "EXPERTS" demonstrated such depth of understanding as you obviously have.
Wow! You are a 3d printing legend!! Thank you so much for taking the time to make such a detailed video. I really appreciate the time and effort spent making this demo. Thank you!
Amazing! The 3D printed model(s) are a work of art that give all us visual learners a clear picture of the how the Walburg works in intricate detail. Thanks
Walbro not Walburg
By far the best demonstration of how a 2 stroke carburetor works you put a lot of time and dedication into that thank you sir. This should help understand these buggers.
Durn! I've been rebuilding carbs for years and this is the best break down I have ever seen by far. It has given me a new understanding of things that can go wrong and how I might fix them. It also lets me see what I should expect to see when doing things like squirting carb cleaner in the various holes. Walbro carb are very common and the clones work just the same with minor variations. I owe you my thanks. Next time I lift a brew I'll toast you.
Good sir - bravo. You actually create value for the rest of us. Much appreciation for sharing your talents and time.
Wow! This was the best description I've ever seen. You just made me a smarter man. Now when I have carb problems I'll know exactly what to look for!
Absolutely amazing. I am a time served mechanic and this video has helped me understand these marvel of a carb finally. Brilliant
Dude! Best explanation I've seen. Must have taken a lot of hours to put this together. Thank you! The only thing I missed was where the low speed fuel comes out into the throat of the carburator.
Simply incredibly technical content…the level of detail in the magnified model and cross sections truly there comprehension of the integrated system for even well versed individuals. Thank you so much!
Ya, as others have said this is the best cutaway and explanations of small engine two stroke carbs I think I've ever seen. Really good job, you really took some time to do this.
IMPRESSIVE in every way!!! In design, manufacturing and ESPECIALLY your 3D scaling of the whole carb, ports, springs, just EVERYTHING!!! This is beyond anything I have ever seen for recreation and detailed explanation of the workings of a two stroke Wabro carburetor! I can't imagine the time involved making this. I definitely gave a thumbs up and SUBSCRIBED! WELL DONE SIR!!!
This is outstanding. Never saw anyone explain something so well. You should win a RUclips video of all time and be in their hall of fame. Thank you!!!
Best video am seeing hands down. Using that 3D printed carb makes it so easy to understand what goes on with it. I wish there'd be more vids like this that trouble shoot my Stihl weed eater. From the screws and their placement to the proper operational specifications. Thanks a lot Sir you are a master teacher👍🇯🇲♥️💯
Amazing! The larger replication must have taken hours or days to re-create. Thank you for your hard work! Excellent tutorial, I've seen nothing like it!
Fantastic explanation and awesome 3d printed model!!
Those little carbs are quite complicated. Whoever figured all that out was pretty smart.
Thanks for the video
Can only echo the other comments which commend your excellent 3D modelling skills and detailed explanation of the Walbro carb. A super learning video. Thank you so much.
Absolutely, utterly brilliant work. I have to service chainsaws as part of my job and this has helped so much! Very grateful for all the hard work you put into this project. Just brilliant!
You sir, are AMAZING! To be able to print a model carb to show the fuel and air paths is just incredible. Hands down, the best I have ever seen. I feel like an expert now! THANKS!
Fantastic work! You explained the functioning in a simple and easy to understand step by step way. The big scale 3D model is superb and what a great way to show practically how a small complex assembly works. Great credit to you and thank you for a wonderful and educational video. Top notch.
Fantastic. Finally I get it. For you to take your time and make all these props and help out all of us is simply marvelous. Really appreciated. Thankyou, thankyou, thankyou.
This surely is the very best explanation of how a 2 stroke carburetor works and should be viewed and studied by all of the small engine mechanics and buffs. BRILLIANT SIR!
Fancy meeting you here. Cheers! 😘
@@TheLawnmowerLady 😘
Well that was as good as any carburetor lesson as I have seen in my four decade career! Thank you. Also, yes I subscribed
Thank you sincerely. After 45 years of tinkering with these things, I can say that I now, finally, have a pretty good idea of how they work.
I LOVE this video, this has GOT to be the BEST explanation EVER!! Absolutely incredible!! The detail that's on the 3D printed carb is absolutely incredible!!
Absolutely incredible explanation .I now finally understand the 2 stroke carb. Thank You
This must have been an incredible amount of work. Thank you so much for such a detailed explanation.
not sure why you don't have 10 million subs already......hands down the best lesson I've sat through in my 50 years of learning......thank you for keeping life interesting Jay......just magic!
I've been rebuilding these carburetors for over 45 years and now I fully understand! THANK YOU!
Not just a really good informative RUclips video but probably one of the best I've ever seen of this type.
These are "Demand Regulator" carburetors. They are not necessarily specific to 2-cycle engines. Tecumseh made tens of thousands of four cycle engines equipped with them.
The 1958 Brown carburetor was the first of this type. The literature on them mentioned that they were a simplified Bendix RSA aircraft pressure carburetor. In 1960 Tillotson bought the rights to the design. In about 1968 Walbro began manufacturing these "diaphragm" (as opposed to "float type") carburetors - and they worked really well.
One reason they worked so well was that they incorporated a "main fuel discharge check valve" to prevent air being sucked in the main discharge when idling. For years nobody minded air being sucked in the IDLE discharge when the main was pulling high suction. Later Walbro and others (many if not most carbs used on Stihl) incorporated idle discharge check valves as well. (To my knowledge no idle check valves were intended to disassembled and repaired)
A big problem with these carbs is the diaphragms become stiff and "oil can" in and out taking a set first one way and then the other. Walbro now has kits to retrofit clear diaphragms guaranteed to never stiffen (but they must be used with a matching super thin spring steel flat spring - it comes in the kit)
Hardly any mechanics know that you should know how to check the piston rings, cylinder base gasket, crankshaft seals and even the reeds/piston skirt valves for air leakage if your initial disassembly and renewal of gaskets and diaphragms does not yield good running.
It's like this kids: 1) Compression (which includes crankcase compression!) 2) Ignition - which includes spark plug. 3) Then if you have an engine with a dry carb in place that also EAGERLY burns it's prime - You can get it wound up and un-pinch the fuel line and see if you can get the carb to take over from the hand (squirt bottle) priming that you are doing.
YOU ARE WELCOME
Excellent instructions. And super teaching aids. Best I’ve ever seen. Thank you.
Es el mejor tutorial que he visto alguna vez. Gracias infinitas por su trabajo.
Very well done. Thanks for going through all the effort printing it to explain it in so much detail.
Absolutely amazing video it should become the number one training video for all young apprentice technicians! Sir you have done yourself proud thankyou so much for sharing your passion with the meek and mild be well dashman 😊
Pretty much knocked that one out the park. Crazy good video. Thanks for taking the time to produce this one.
Excellent presentation. Never saw a video so simple yet informative. Taught me so much. Thanks. Will b looking for more of your videos.
OMG! Thank you very much for this education movie. I have not seen better about this topic. I didn't understand the fully work of carburetor. I saw lot video about it on my native language but i better understand it on English with you and with your model.THX!
This video deserves a billion hits! GOLD!
Wow! Thank you so much for all of the effort and resources you went through to create this video! I’m going to keep this and refer to it often. This is the best explanation I have ever seen. God bless you my friend. John.
awesome!
The amount of times i have pulled apart that exact carb on my strimmer and just basically cleaned and blown it out withouf efer really understanding the flow.......and finally thanks to you i do
now.
A superb presentation sir! Probably the best demo I've ever seen on youtube! Thank you!
Thanks for all the hard work and time it took to make this video. Like others have said, the best explanation videos ever. Thanks again.
Wow this must be the best explanation video on RUclips - I've always wondered how and now I know - Thanks very much for this 10/10
Thank you for this excellent lesson. It cleared many clouded areas.
Really beautifully explained... THE BEST VIDEO of HOW CARB WORKS!!! Thanks a lot..
Amazing! The best explanation I've ever seen. Love your 3D Printed Carb. Thanks
This is the best explanation of how anything works that I have ever seen on the internet machine. Awesome video great job!
Thank you!
Thanks for putting the efort and realising this video!
Good health and good luck in everything you do😊
This is the best informational video I have ever seen. Sure has made my work alot easier...Thanks
Thanks for taking the time to put this together. Excellent video and explanation.
Best 2 stroke carb explanation!
Explanation, Visuals and Extra effort creating that massive(easy to see) reproduction 100%+
Thank you!
best of best teaching on how carburetor work !!! i never seen any better teaching than this one ! thanks so so much !!!
By fair the best RUclips video on how 2 stroke carb works hats off to you FairPlay good skills that man 👌🏼👏🏻
Thank you for making this video! Incredibly informative and really helped me visualize how these carbs work.
Wow what a wonderful presentation! Thank you for your insight very detailed I'm trying to get a weed eater to run right now it tries but it doesn't run unless you're pumping the ball and then it's still not wide open I took it apart and cleaned it just need to get some more for you thank you
Thank you! Now I finally understand why are those membranes in place.
Incredible demonstration!
Thank for posting this.
WOW! Hardcore model and presentation! Many thanks.
Amazing video! Thank you for the time and effort you have put into this. VERY helpful!
Your model is amazing , massive effort. thank you
that sir was with out a doubt the best ........10 stars for you ...........exelent
Many thanks, outstanding work. Very helpful in understanding those carburettors.
Absolutely brilliant explanation
Thanks Jay Gould. Watching this was like being in a class you'd pay hundreds of dollars for. This is so much better though. If you miss something, you can rewind.
This is the most excellent technical video I’ve ever seen, and all the models are absolutely excellent, which has given me a much better understanding of its function.
I was trying to work out how to put a priming ball on my Stihl petrol cutter which the manufacturer says should go on the fuel return line, unfortunately I still dont get where that is ?
Great work tho’ and great video
Never seen such a well presented demo. You make others look like muppets.
Very impressive presentation. Thank you.
Wow. Very cool video! Thanks for sharing. Amazing work you have done
Beautiful presentation!
Truely the best explanation I have seen. Very Helpful, thank you.
I could learn trigonometry from this person. And I barely got through general math in high school lol. I think this must be the best video I've ever seen on RUclips wahlboro should buy those from you and they could get rid of their entire customer service department. All they would need would be stock of rebuild kits And proprietary tools and the videographer should get a cut every time it gets clicked. LOL
Walbro duh
Incredible model and amazing video, thanks.
Great job made a lot easier to understand
Wow -- outstanding work, sir!
Such a great video and such great explanation. My compliments to you!
Amazing work!very detailed and explained!
an absolutely phenomenal presentation! Thank you!
Why are there THREE holes under the idle side welch plug?
You're a great teacher
Brilliant video, very well presented, the 3d printed model is a work of art.
Very good video - thank you very much!
Could you maybe discuss the other two low-end holes?
Amazing,great demonstration thank you
best video I ever seen, thank you Jay for detailed explain ;)
Amazing video. I love it. Thanks Mate
Amazing work. Excellent.
Thanks for sharing this video. I learned a lot.
Excellent video!!! Thank you so much!