How CHAINSAW CARBURETOR Works - Chainsaw Carburetor Explained!

The Chainsaw Carburetor How it Works
This Fascinating Video Effortlessly Explains the Inside Workings of the Two-Stroke Carburetor for a GREAT UNDERSTANDING.
- So let's begin: The two-stroke carburetor is a little but complicated mechanical marvel that powers the chainsaw, an iconic equipment in the worlds of forestry, landscaping, and outdoor upkeep. This part, which serves as the engine's core, is in charge of supplying the ideal air-fuel ratio required to operate the chainsaw's two-stroke engine at high revs. In this investigation, we'll take a deep dive inside the two-stroke chainsaw carburetor's inner workings to discover how it actually functions.
1. Air Intake and Filter: The chainsaw's air intake system is where it all begins. An air filter is used to draw air in, keeping dust and other material out of the carburetor. For an engine to run properly, the air filter must be clear and clean.
2. Venturi Effect: The air flows through a vital part known as the venturi as it enters the carburetor. The airflow is accelerated by this narrowed area of the carburetor throat, which results in a low-pressure area. The fuel must be drawn into the airstream using this Venturi effect.
3. Fuel Reservoir: A fuel reservoir or float chamber inside the carburetor houses a supply of liquid fuel, often petrol. A system of needle and float valves controls the fuel level. The float valve opens when fuel is used up, letting in more fuel to keep the level balanced.
4. Fuel Atomization: A calibrated jet draws fuel from the reservoir through the low pressure produced by the Venturi effect. In order to ensure full mixing with the fast-moving air, this jet atomizes the fuel into small droplets. A homogeneous and flammable air-fuel mixture is the end result.
5. Adjustment Screws: The majority of carburetors have adjustment screws that can be used to fine-tune the air-fuel ratio. While the low-speed screw regulates the idle mixture, the high-speed screw modifies the mixture for full throttle operation. The performance of the engine must be optimised by these changes.
6. Reed Valve: A reed valve is positioned between the carburetor and the engine's crankcase in some chainsaw carburetors. The reed valve controls the flow of the air-fuel combination, ensuring that none of it runs back into the carburetor.
The well-mixed air-fuel combination is brought into the combustion chamber for combustion and ignition. Here, the spark plug ignites it, causing a strong explosion that powers the chainsaw's piston. The chainsaw's cutting chain is propelled by this mechanical process, which converts chemical energy into mechanical labour.
8. Exhaust System: The engine's exhaust gases leave the engine through an exhaust port after combustion, restarting the cycle as the piston completes its strokes.
An essential part of a two-stroke chainsaw that ensures the engine obtains the proper ratio of air and fuel for dependable and efficient performance is the carburetor. To obtain peak performance and avoid problems like fouled spark plugs, overheating, or excessive fuel consumption, the carburetor must be calibrated to produce the ideal mixture.
The two-stroke chainsaw carburetor is proof of the meticulous engineering needed to power these amazing equipment, to sum up. It is evidence of the fine coordination of airflow, fuel supply, and combustion that allows chainsaws to flourish in the hands of both professionals and homeowners. Understanding how a chainsaw functions can help you to better understand the magic that makes it so useful for a variety of outdoor jobs.
This principle works for most types of Chainsaw saws, and the following also helps with Chainsaw maintenance. So, whether you are using a Stihl Chainsaw, Husquvarna Chainsaw, basically, all types of Petrol Chainsaw are valid for this principle, as well as many types of or a 2 Stroke Engine. The Electric Chainsaw, of course, escapes this whole principle!
Craig Kirkman (Owner and creator of The Repair Specialist Channel and its Copywrited content) #lawnmower​ #gardening​ #repairing​ #savingmoney​ #chainsaw #Chainsawrepair #oil #smallenginemachines #DIY #howthingswork Please check out my amazon shop. I have recommended some useful items from Amazon below. I guarantee you that these items are the sorts of things I use on a daily basis so I know they are good. I have to be careful in recommending products because I have my name and credibility at stake. So I will only recommend good products. www.amazon.co....
#ChainsawCarburetor
#2StrokeEngine
#MechanicalEngineering
#EngineTuning
#AirFuelMixture
#VenturiEffect
#ChainsawPerformance
#OutdoorTools
#EngineComponents
#CarburetorAdjustment
#FuelAtomization
#ChainsawTechnology
#EngineMaintenance
#MechanicalComponents
#EngineEfficiency
#ChainsawMechanics
#PowerTools
#ChainsawOperation
#CarburetorExplained
#ChainsawInsights
The information in this description was created with the help of ChatGPT

[@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 😊👍

[@gregmoran3702]

That was absolutely brilliant. I've learnt more about how carburettors work in the last 15 minutes than I have in my previous 65 years! You sir, are exceptional at explaining a mystical subject in a very easy to understand manner. Thank you so much for your efforts. Well done.

[@bjemdwbesq3]

that's funny. I said almost the exact same thing. But I've only been around 68 yrs 😉

[@skent]

Absolutely top notch - very much appreciate the level of detail, drawings, close camera work, even audio overdubbing. Agree with another poster - perhaps the best instructional video I've seen!

[@nickloughrey9841]

Well Done . I was an Aircraft Technician Back in the 60s/70s/80s andwas well trained at Halton the best training a guy could get . You reminded me of the great instructors we had . An accurate and well presented explanation ..... Well Done !!!!!

[@stevewayne1480]

Probably the best instructional video I've ever seen. Excellent, superb, magnificent job mate !

[@piddler5188]

+Steve Wayne Totally agree!

[@peterford9369]

Steve Wayne Ditto. Was gonna say the exact same thing. 👍👍

[@dominiccampion5151]

I guess he's a teacher or lecturer - it was easy to understand good pace and tone, nice one!

[@fludrbywest3886]

Yes sir I do agree

[@julzchar1055]

Real Thing 👌💯 Best explanation ever 💪

[@rickfranklin4196]

You sir, have made something I never dreamed I would understand, understandable. You are a gifted teacher.

[@TheRepairSpecialist]

Rick Franklin, than you so much for your positive feedback. I really appreciate it

[@alandavey6550]

Just enough information to satisfy the average absorption rate of the average mind! Very well done!

[@jamesreed7358]

The best and most thorough explanation I've seen on you tube . Very well done sir, you have made this very clear and easy to understand. Hats off to you!

[@PlanetJARK]

Amazing knowledge share. So easy to understand when someone explains it clearly like the author does. Awesome job.

[@ed370zx3]

Terrific explanation! Wish I had you for a teacher when I was younger! You have a voice that is calming and clearly understandable.

[@joesphx54]

This is perhaps the single best educational video on KZbin. Told with skill, terrific videography, and good sense, I would rate this as one of the all time best.

[@sal98]

After all these years, I finally understand how these carbs work. Really appreciate the time you took to publish this video.

[@armnsingh9563]

This the best and most sensibly explanation of how a two stroke carburetor fuel flows .Every explanation to the point...not boring or confusing .Thank you so much and Jehovah's blessing

[@martialme84]

He said "Jehovah"!

[@Alorej]

I changed my Stihl 025 carburetor's diaphragms and gaskets a week ago and it was quite interesting to see afterwards, how that thing is supposed to work. :-) I don't speak English as my native language and I want to say that your nice and clear English was a pleasure to follow! That is not always the case here in tube. Thank you, well done sir!

[@TheRepairSpecialist]

Wow, thank you for your nice feedback. Its comments like yours that keep me motivated. thank you

[@steveretirednavyengineer9976]

You’re grasp of this material is as impressive as your presentation. I am sure you have probably heard it before but if you haven’t, you might consider a quick caveat indicating that the tick-over condition as it relates to a carburetor is understood in other parts of the globe to mean the “idle condition”. Your videos have helped me immeasurably troubleshoot and repair numerous small engines. Please continue to post these as you find new material.

[@TheRepairSpecialist]

Thank you so much for your nice feedback. It's comments like yours that motivate me to continue making these videos. Craig 😀👍

[@dwilliamson1063]

That's the best, clearest explanation of how my chainsaw carb works that I have seen. Thank you very much for taking the time. I have learned a lot.

[@TheRepairSpecialist]

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

[@spoonieAB3]

That's an absolutely exceptional video! I've been trying to learn about small engines and watching lots of videos of stripping, cleaning and tweaking carburetors, but watching this has just been a total lightbulb moment! Now that I understand the fuel flows and how it works, suddenly all the other videos and processes make sense and I can see how it all comes together! Thanks so much for sharing!

[@yogsothoth9515]

I was reading Paul Dempsey's book on small engine repair, and quite frankly he lost me on the carb part. I watched your video and everything clicked. I will make sure to mention you in my Goodreads review, and how you're the perfect companion for the book.

[@RoryTrackrod]

After taking my saw carbs apart several hundred times over the course of 20 years use, I never actually new how they worked ......... Until now. Thanks. ..

[@TheRepairSpecialist]

+RoryTrackrod Brilliant, I'm just pleased you liked the vid, and thanks for the feedback. Craig

[@mrjaybennett80]

This was the best video ever made in the universe on the 15mm carburetor. I am able to fix most anything if it ceases to work. I have never been able to repair one of these ever. No matter what I do I cannot get one to run once it stops

[@TheRepairSpecialist]

That's awesome. Happy fixing. Thank you so much for your kind feedback. Craig

[@Crest591]

I have been looking so hard for someone to explain this is detail. I'm so glad I found this video.

[@craigchampagne969]

Hello Craig. I think so many people liked the info & video because there is no one out there that teaches this info. I've gone to small engine schools and fixed small engines for many years and nobody teaches specifics on how zama and walbro carbs work- with so many out there for so many years they should have many years ago. It was very interetsing to learn this information and I thank you for that. I've been cleaning & rebuilding them for a long time w/out always knowing how they work 100% exactly-mainly what hole does what and when-the path the fuel takes, etc. Problem is ...in todays world...the holes are so small they dont always clean out... the gas is so lousy (especially if it sat inside there and got old w/ethanol), that they are not worth the time to fix or a great way to test those little valves inside them. If I had to put a number on success's it would 40%. They've also gotten so cheap to replace that its just best to toss them now...especially if your charging 60 to 80 bucks an hr. It was fun to do in the old days but not worth it today if your a pro. Still enjoyed it. Maybe the next video could show the parts to look for that go bad and what they look like...why they go bad and the symptom it causes-working backwards from the symptom. That would be the whole story no one ever discusses-symptom, cause, where to look, how to fix....but then thats why we bring/pay it to the mechanic..right? Keep up the good work Craig. My names is Craig too! Cheers!

[@MrJamesThekat]

extremely well explained, I appreciate you doing this video!

[@peters2620]

This video should be placed in the British National Archives

[@frankvucolo6249]

Having rebuilt and cleaned many carburetors, including the very Zuma you used to demonstrate, I have loosely known these principles. This video has taken my understanding to a whole new level. Such a well done piece! Thank you so much for taking the time to make this video and for the outstanding teaching technique you used to explain things. Bravo!

[@TheRepairSpecialist]

Thank you so much for the motivating comment. It's comments like yours that keeps me making these videos. Thanks again. Craig.

[@piecetoyou8285]

Ive got to say don`t use carburettor talk at a bar to pick up a date lol, You are the man,there is nothing on you tube that gives a total detail on these two stroke carburettors,this is really helpful, If we understand the workings of something ,it makes it easier to figure out the problems, knowledge is power/power to machinery lol I take my hat off to you for sharing what you know.

[@mikespain8655]

Yep, damn good explanation!

[@balesguy]

Sir, I can't thank you enough for producing a great video. So clear and informative. I've fooled with these Stihl carbs for years and really had no idea how they worked. Always hoping that after cleaning and reassembly the problem would just go away. Usually just wishful thinking. My confidence level is much greater now. Thank you again and keep up the great work!

[@budgillett9627]

You sir are IMO possibly the very best instructor on KZbin!!!

[@freedomofabird]

Brilliant, absolutely brilliant. Having been left a Sthil brushcutter, and no knowledge of how the engine works, this was great. Fuel had been left in the tank unused fit 3 years! I now have the knowledge and understanding, on how and why to clean it! Thank you!!!

[@baronlowie]

Even after 50 plus years of working on motorcycles these little things were a mystery to me.Thanks a lot for explaining the function of this type of carb'.

[@TheRepairSpecialist]

Wow.! Thank you so much for your fantastic feedback. Its people like you that motivate me to continue making videos like these. Thanks again. Craig

[@chainsawtony6857]

Thank you for taking the time and effort to produce this video. I recently ordered a service kit for my old Stihl chainsaw,and rather than being a little apprehensive towards stripping down the carburetor, instead I was fascinated and confident, it all makes sense now. What a clever design. Thanks again and all the best. Tony

[@bobeden5027]

The best and simplest explanation of the workings of these little demons I have ever seen, so well done mate. In 14 minutes you have provided all the info that would have taken a yank about 3 hours to get through, so Thank you for keeping it simple!

[@TheRepairSpecialist]

Thank you for your comment. I appreciate it. 👍

[@wladjarosz345]

sorry, but maybe you know, how exactly works the Zama C1Q carburettor (e.g. from Stihl FS 310) with an inner pump piston/plunger, which is pushed with a throttle valve's shaft?.. or namely why it doesn't work on high rpm? how to remove a "leakage" through this piston? thanks!

[@frundlemud]

Just bought 2 stroke Hedge trimmer. Your tutorial is the best I've seen and will be helpful in days to come.

[@TheRepairSpecialist]

Thank you so much 👍👍👍

[@DanielRodriguez-vh3dz]

Finally a video where it shows how these carburetor works. I've been waiting for this one. You sir earned a subscriber, thank you for your knowledge.

[@doctormoreau9812]

This dude has the best voice and always does a wonderful job explaining all things small engine. Love it

[@TheRepairSpecialist]

Wow, thanks!

[@doctormoreau9812]

@@TheRepairSpecialist your defitenly the best small engine explanation channel by far. Your diagrams and the way you speak is so easy to listen to. Kudos bro if I could subscribe twice I would

[@noslohcinkin]

Wow! What a great video, camera in focus, actually looking at the object of interest and explained by someone who actually understands how something works! What a difference from the usual half-arsed KZbin drivel! Cheers, mate!

[@ic5838]

This was truly an OUTSTANDING explanation of how these small 2 stroke carburetor work. Very helpful in understanding how to troubleshoot and clean it when necessary. Many thanks.

[@TheFlyingfarmer28170]

Great Video! My saw would only run with the choke on, I took it apart and cleaned all of the orffices with carb cleaner,and air now it runs like new! Thank you very much!

[@cloerjohn]

Why are properly executed instructional videos like this one so hard to find these days? Nicely done sir, thank you.

[@JOEZEP54]

This came up as a recommend video so I click on it not expecting to watch it through. But I have to compliment you on a job very well done. The video is very informative & the explanation using the diagrams made an excellent presentation.

[@randyaubrey1389]

JOE Z no

[@eduardomiyashita9490]

This is THE benchmark video for anyone who wants to explain how something works on KZbin. Really best ever, superb! Congratulations!

[@Adi-S]

Wow, that was the best explanation I have ever heard! Thank you!

[@Clarity5970]

So nice to understand instead of everyone tell u basically clean and replace.A lot utubers don’t even tell you fuel in or out just confusing.

[@markatTDR]

Brilliant video! I'll be sending this around to everyone who has every opened a two stroke!

[@panant6573]

Congratulations, perhaps the best video that explains the carburetor function in a very simple way

[@bps3298]

Wonderful! Most instructive and professional video I've ever found on youtube! Excellent camera work, graphics, and narration. I will be looking for more from this gentleman, even on topics I don't need help on!

[@TheRepairSpecialist]

Wow, thank you! Craig

[@gregoryslattery9112]

This was unbelievably informative. Best description of a carburetor I've ever seen

[@TheRepairSpecialist]

Thank you i really appreciate your awesome feedback. Craig 👍

[@cr6925]

Superbly useful explanation, thank you! I had to recently strip and clean the carb on my STIHL strimmer. Your video was a big help.

[@partick49]

Fantastic instructional video. I could have used you 45 years ago, all these years struggling with chainsaws, lawnmowers and generators.

[@davecarlson9350]

Well done! I would appreciate a follow up video explaining problems that arise with these carburetors and how what you have describes here is impacted by these problems. Symptom and cause type of thing. Thanks!

[@martinmaher1182]

When I want to make peace with a 2 stroke engine I watch your videos/tutorials. Not only are they brilliant, they also have a way of instilling confidence and bringing me a sense of calm.. I've worked a few miracles as a result of your superb work. Thank you so much.

[@davidleach1068]

EXCELLENT , what a perfect video. Five stars for the professional creation. I'm now a subscriber.

[@adamasz54]

Best instruction on membrane carbs I've ever seen and heard ! One should see and hear it at once - then understanding of the problem will be complete. Super lecturer and instructor YOU ARE, Sir !

[@orozcorob69]

You earned my subscription. Great job describing all the process on how it works. Keep up with this type of videos

[@joegee1699]

Magnificent. I'm troubleshooting a new husq 3120xp that floods and won't turn over. I've checked the easy stuff and now I'll investigate the carb to see if it has dry diaphragms. Videos like this are perfect for someone new to 2 stroke engines, like me. Thank you!

[@klepper00]

If I had teachers like you I probably would have gone to collage ! Great job !

[@David-lb4te]

college.

[@_Junkers]

@@David-lb4te It complements his sentiment

[@charlesdickens6706]

.....indeed, he is quite didactically endowed .

[@balenaluba4215]

The explanation on the fuel pump side of the carburator, with the diaphragm, has helped me understand which is the correct way to attach the fuel lines on my chainsaw (the fuel filter hose and return hose). Thank you.

[@richardredcastle7911]

Fantastic explanation, clear and precise. This helps me greatly in my first ever service and repair of my equipment. Thanks for producing this video.

[@TheRepairSpecialist]

+Richard Redcastle Brilliant, Thank you for letting me know

[@juris.m]

@@TheRepairSpecialist Hi make a video on how many you turn all 3 runs in L H and T

[@b-ron6465]

Thank you for the excelent detailed explanation. I thought I knew carburetors from my two and four stroke motorcycle experience, but chainsaws were stumping me. Thanks again!

[@TheRepairSpecialist]

Thank you for your kind feedback. I really appreciate it

[@grainger5133]

one of the most informative 14minutes and 42 seconds of my life. Just trying to work out now why I seem to get fuel into strimmer engine but not starting despite a spark. Plug coming out quite wet. Have another strimmer which starts and seems to throw out a mist through plug hole. This one doesn't so I assume I may be getting too much fuel in for the spark to cope with. off to watch lean and rich mix vid now. Thank you for your expertise and posting vid

[@devannaicker1323]

gas

[@ZombieDaveAZ]

grainger5133 check the spark arrester. If you have a stihl, its very easy to remove,clean, and replace.

[@michaelk1469]

This is by far the best explanation i have seen of how a 2 stroke carburetor works Ace. i enjoy all of your videos. very well done. Mike from the US

[@psomlo]

Excellent - very well done!

[@TheRepairSpecialist]

Thank you for your kind words.

[@sschrybu]

Greetings from 🇨🇦. Thank you for this very informative video. These little 2-stroke carbs are no longer a mystery to me. I hate throwing away anything that can be repaired with a little understanding & effort.

[@TheRepairSpecialist]

Thank you. I really appreciate your feedback. Craig

[@shaggyda2758]

A pleasure to watch, Thank-You for doing this GREAT video

[@rogerwgoddard7317]

Thank you for a comprehensive explanation of the diaphram carburetor. Probably the best explanation I have seen and well worth the time you spent to make it.

[@TheRepairSpecialist]

Thank you so much for your generous comment. It's comments like yours that motivate me to continue making these videos. Thanks again.

[@FIREBALLJR2001]

Excellent explanation. Very professional. Thanks.

[@mikeyboy2154]

Outstanding. Clearest, most elaborate video I have ever seen. I will return to it many times surely. Your novel use of cut aways and sectioning makes all of the difference. THANKS so much.

[@reddawaysremovals2335]

Very helpful video, clear and precise. Thanks

[@TheRepairSpecialist]

Thank you, I appreciate your kind comment.

[@082gibbo]

What a brilliant tutorial. I was battling for ages trying to prime this carb after a rebuild and would never have come right without understanding the operation. I pushed that bulb till my thumb was numb - you need the vacuum of the engine to assist with initial filling of the chambers after which it all springs to life.

[@TheRepairSpecialist]

Craig Gibson, fantastic, thanks for your motivating feedback

[@user-dv1be9uh5q]

excellent informative video thank you, also worth having a look at the technical pages on the Zama website explaining how these carburettors work . Which are easier to understand after watching this video. The super imposed diagrams really help to explain it . There are now more four stroke chainsaws and strimmers getting about any chance of another video to explain how they work ?

[@tomt9543]

WOW! What a great video! You deserve a trophy for this! Something they touch on in the ZAMA videos on rebuilding carbs is the importance of not sticking wire, pins etc into the little round brass plugs with a hole in the center. They explain that these are check valves, and probing them or blowing compressed air or carb spray into them will destroy them! That renders the carb scrap, because they are not a repairable item! Again, excellent video!

[@nemocheerio]

Spectacular. Thank you for this.

[@Avecfort]

Absolutely best instructional video on the subject I've ever seen!

[@M0ntaroo]

fucking hell, why don't you have a squillion zillion subscribers......that was intense and bloody brilliant.

[@AnsariBaksh]

Your channel is one of the most comprehensive I have found on these repair videos. They have helped me a whole lot. Thank you for taking the time to make them and share.

[@TheRepairSpecialist]

Ansari Baksh, thank you so much for your positive comment. It really gives me the motivation to keep adding videos. Thanks again. Craig

[@sawlin73]

Ansari Baksh.

[@TheBeardedSandman]

KZbind "how does a diaphragm carburetor work" Was not disappointed.

[@leeosullivan4036]

I have this carb on my blower. The fuel pump diaphragm is split. I’m waiting for the rebuild kit to be delivered. It all makes sense now after watching your video. Thanks very much 👍

[@rockfieldlangley1955]

This is ABSOLUTELY.... POSITIVELY.... THE BEST Video I have ever watched. Thank you for posting this! I've been cleaning these little carbs for awhile, but I've always wanted a clear explanation for how they operate in detail.

[@LOCOmotive777]

Great. Simply great. :)

[@teremoanatangamaki3658]

the id

[@Jay_Ira]

Throwing my chip in the best explanation pot. Thanks so much for breaking this down, now I've got to take another look at my chainsaws carburetor and get her fired up again. Take care my friend, see you on the next one

[@conradeckstein2884]

Thanks so much! I had no expectations of finding something this clear, concise and enjoyable .

[@johnellis7971]

I never wanted to really go this far "into the weeds" but it's great now having the background to understand how the tiniest of air leak can prevent something from running. Great video series!!!

[@tims691800s]

Finally a video that explains in an easily understood way the fuel delivery system works in one of these carbs. Very well done sir!

[@5thcorps]

Can't say I learned anything new but your presentation was good enough for my son to understand it fully. Thank you very much

[@alext8828]

What genius has the patent on this carb design? It solves the problem of having a float to deal with. Especially in something that might be upside down. Like some planes, I saw a video on, in WWII. They stalled because the float bowl was full of fuel and when the plane was inverted, the float "floated", which is what it's supposed to do. The problem was that the float floating in an inverted carb will open the needle valve and flood the motor. On restart, black smoke could be seen in the exhaust. I don't know if that was the advent of these diaphragm carbs, but they certainly solve the problem on both two and four-cycle engines.

[@garytree7729]

Fear of the unknown is what this is about. After nearly 40yrs in the tree game I'm finally learning something new. I've recently been doing up some old saws as spares and it's great to have someone who KNOWS what they're talking about explain things. The best way to learn. Thank you for your time and your knowledge. I find that as I get older I enjoy passing on my knowledge to others more than the actual work. Well done Sir.

[@bjemdwbesq3]

you taught me more in 15 min about carbs than I've ever known in my whole entire life. very helpful. Thanks!

[@TheRepairSpecialist]

Thank you so much. Craig

[@presidentspilot]

Fantastic explanation!! NOW I fully understand WHY carbs need to be rebuilt to replace the fragile flapper-valves, and the delicate fuel pump mechanism! What a great VIDEO!! SUPERB! Your added comments about why a float control for fuel metering is not good for trimmers in different positions! I never thought of it! I learned a lot with this video A WHOLE LOT!! Well worth my time! THANK YOU SO VERY MUCH!! P.S. The 'float metering' also explained why the Spitfire aircraft had problems in the early stages of WWII. The German aircraft didn't have that same problem as they were fuel injected.

[@maryhorner3410]

Absolutely fantastic explanation of how this carburetor works. Excellent camera work as well.

[@steadyeddie7453]

Very well explained. Just keep in mind that both Zama and Walbro do not recommend spraying carburetor cleaner or pressurized air into the passages of their carbs. The internal check valves can be damaged. Soaking in gasoline ( I recommend non-ethanol) is the best way to clean them w/o damage, and the gas may also free up a stuck check valve. Great fuel flow video. Cheers.

[@justindawson3428]

WOW that is an awesome explanation, I have always known the basics of how these little carbs work but never to the detail you have just shown. Thank you so much.

[@Kegga999]

Brilliant. Truly knowleable people can take what seems to be complicated and explain it in a way simple enough for anyone to understand. You just did that.

[@TheRepairSpecialist]

Kegga999, thank you for your positive comment. It's comments like yours that motivate me to continue making these videos

[@sparkmanuk]

To truly understand something you need the detail best video I have seen on the subject.

[@TheRepairSpecialist]

Than you. I really appreciate it. Craig

[@stread08]

I was given a Stihl trimmer with a new aftermarket carburetor on it. It would still not run properly. After watching you video I realized that the tiny port on the needle valve side that connects the primer to the body was machined out into the area where the needle valve is. Just a defect from the factory. I worked on this thing for hours. Now I know what is wrong and I can get it taken care of. Thanks for the very informative video!

[@heinj98]

Although you didn't mention it, toward the end of the video you were explaining the hi/low screws and I think I saw why the low screw has to do with idle. You showed where the channels come out and if I noticed correctly, it showed that the low channel ran behind the throttle plate. If I'm also correct, that is called the pilot jet. Thanks for this video. This video is the best explanation of how a carb works on the entire internet.

[@gregbecker1868]

A very well done explanation of Stihl's carburetor! I never appreciated what an elegant devise this is - simplicity of operation through complex design.

[@devonxc700]

I've been repairing Stihl products for 10 years, been to many Stihl courses and this is by far the best explanation I've seen. Great job! Keep it up!

[@andrepierre4368]

Marvelous video. This is THE video I was looking for to understand how the carburetor of this type works. Thanks a lot.

[@billschultz2598]

I will echo the words of Steve Wayne and Cinninnimon Skoda. In a world where seemingly nothing is made clear, a video like yours is a breath of fresh air. I'm in the early stages of learning about carburetors and I greatly appreciate you sharing your immense knowledge base.

[@foreverwood1963]

I have worked on 2 cycles carbs for years ( self taught ) and I have read and heard many things on 2 cycle carbs. I do understand the flow of gas through two cycle carbs. I must say I've read some good ones, but as far as video this is clearly the absolute best I've heard and that's coming from someone who will know if what you're saying is incorrect. Very good job!