How the 2-Stroke Engine & Carburetor Work Together!

An Enlightening Explanation of how the Engine & Carb work as One. FOR GREATER KNOWLEDGE
- So let's begin: An internal combustion engine known as a two-stroke engine runs on a special cycle that requires two piston strokes (up and down) to complete one cycle of operation. Due to its simplicity and lightweight attributes, this design is frequently employed in smaller power equipment like chainsaws, motorbikes, and outboard boat engines. A two-stroke engine operates as follows:
The piston begins its downward movement during the intake stroke when it is at the top of the cylinder, close to the spark plug. It uncovers ports or apertures near the cylinder bottom that are connected to the crankcase (lower part of the engine) as it descends. In the cylinder, the piston's downward action partially evacuates the space.
Air-Fuel Mixture Intake: As the piston descends, a mixture of air and fuel (typically premixed) is taken into the cylinder from the carburetor or the fuel injection system. Then, through the open ports, this mixture is drawn into the crankcase.
Compression Stroke (Upward Movement): After the piston completes its downward stroke, it turns around and ascends the cylinder in the opposite direction. The air-fuel combination pumped into the crankcase during the intake stroke is compressed as it rises. Near the apex of the stroke, the spark plug ignites this compressed mixture.
Power Stroke: As the compressed combination burns, a high-pressure, expanding gas is created. Mechanical work is produced as a result of the expanding gas pushing the piston down the cylinder. This is the engine's power stroke.
Exhaust Stroke (Upward Movement): The piston resumes its upward motion after the power stroke. Near the top of the cylinder, it reveals exhaust openings as it rises. Through these exhaust ports, the expanding gas from the power stroke is discharged into the exhaust system.
The cycle is repeated, and the engine keeps running as a result. At the end of the exhaust stroke, when the piston has reached the top of the cylinder, the intake ports are once more exposed, and the cycle repeats. A power stroke occurs after every two piston strokes (one full up-and-down movement) in a two-stroke engine.
Two-stroke engines are notable for their simplicity and light weight, making them appropriate for applications where compactness and strong power-to-weight ratios are crucial. However, in comparison to four-stroke engines, which have an independent intake and exhaust stroke, they also frequently use less gasoline and sometimes emit more pollution. Additionally, two-stroke engines frequently need their fuel and oil mixed together in order to lubricate the moving parts.
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!
I really hope you enjoy. Craig
For some FREE Printable Download help Leaflets: www.therepairspecialistonline...
Many thanks
Craig Kirkman (Owner and Creator of the 'The Repair Specialist' Channel) #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.uk/shop/therepa...
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#InternalCombustion
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The creation of information in this description was helped by 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 😊👍

[@animeanibe]

Explained what I've been wondering all my life in a matter of minutes. Amazing!

[@typeppernell4132]

this is by far the best video ive watched on this. cleared up so many questions I had. Thankyou

[@amalfi460]

Wish my teachers growing up could get their point across as well as you do sir

[@ahobimo732]

WOW! This is fantastic! A teacher of mine once said that the best indicator of how well you understand a topic is your ability to explain it clearly to others. By that metric, you understand 2-stroke engines better than anyone I've ever met! Equally impressive is the fact that you've illustrated a complex, dynamic process using only paper and colored markers! OK, maybe a straight edge as well. ;-) Although price might not have been the determining factor in your choice of methods, it still goes to show that imagination and diligence are often more important than having the best, most expensive equipment.

[@victorheifetz7141]

what a clear explanation! beautiful!

[@shaggyda2758]

I agree, the video is 'It'

[@TheRepairSpecialist]

shaggy DA. Thank you for your comments, I really do appreciate it

[@joshuasanborn46]

The best explanation I've ever seen on the subject!!

[@TheRepairSpecialist]

Wow, thanks!

[@mvmcali6900]

Tremendous explanations...perfect balance of detail and simplicity.! Love the detailed explanation

[@outbackenduro7418]

EXTREMELY well explained, what a great contribution to all of us thank you

[@goneviral6037]

This is the best explanation I have ever seen on all of KZbin! And I have watched a lot of explications!!! ❤❤❤❤

[@TheRepairSpecialist]

Wow. That’s some of the best feedback I’ve had. Thanks you. I really appreciate it. Craig 👍

[@siskiyouwoodsmann4279]

You sir should be teaching this at trade school level as your illustrations and explanations are unparalleled. I suspect you’ve already made a great difference in turning parts changers into true diagnostic technicians. Well done 👍

[@Guarrdian1984]

Terrific! I daresay you've got the best explanatory videos on this topic internet-wide!

[@ManfromVega]

I've watched dozens of videos about the two stroke engine, trying to understand how it works. And i managed to understand it, but then i came across this video, which is by far the best way it has ever been explained. Such detail and in lamen terms. Thank you soo much!!!

[@luksurias]

Beautiful explanation. Thank you.

[@geojor]

the best on youtube, congratulations on your hard work to put these videos for the DIYers ...

[@athhud]

I wish you were my instructor for every class I've ever taken. The way you illustrate and explain works exactly like my own mind. Great job! Honestly, I thought I knew pretty much everything there is to know about 2 stroke engines, but it seems that there is a little fact in everyone of your videos that I'd never considered. For instance with this one, I had no idea that air/fuel was transferred from underneath the piston to the top of it. I always assumed that it drew air in through the intake on the down stroke like a 4 stroke engine. Thanks for sharing your vast understanding of this topic!

[@TheRepairSpecialist]

I'm really pleased it's helped, as always thank you so much for your kind feedback!😃

[@austinmeyer9100]

fuck this guy is good a teaching. learned more in that 10 min video then i did in 4 hours yesterday trying to figure it out

[@M0ntaroo]

once again, a 1 million view video..........just brilliant

[@TheRepairSpecialist]

Thank you for the positive feedback, I really appreciate it. Thanks

[@samjohnson466]

Now that was a great explanation. Thank you. well done, sir.

[@gregmelton9355]

Cogent, clear, concise with very nice visual elements. Thank you so much for this presentation!

[@TheRepairSpecialist]

Thank you so much for taking the time to write this really nice comment. I really appreciate it and it keeps me motivated to continue making videos. Craig

[@nathansegurakennedy8607]

That was phenomenally illustrated! I understood this on the first time watching and learning. Great work m8

[@ktk3062]

Ohh it says mate lol I’m slow ✌️

[@susanl3136]

Thank you for your videos...I have many people in my life who like to fix things FOR me, and none who really have the time to teach me. I just purchased a used fs90 Stihl Weed Eater, and right away am having problems. I have decided that it's time to start learning about how engines work, and your videos are immensely helpful. Thanks you!

[@oppanheimer]

Best explanation/illustration I've seen on 2 stroke operation. Thank you sir.

[@CaleyCreations]

I'm just about to take delivery of a Stihl cut-off saw and was a bit worried that my lack of engine knowledge would hamper my maintenance/repair attempts, but this is an excellent video demonstrating not just the engine, but the carburettor too. It's actually very similar to premix burners in gas boilers which I used to work with so quite easy to relate to it. Many thanks :)

[@bonnie-voyage1005]

Great explanations. Thanks for taking the time to explain and upload.

[@Jager_meister]

Great, thanks! Now let's try fixing that weed eater that was flooding...

[@TheRepairSpecialist]

Awesome 👍

[@youpattube1]

A very clear explanation. All that work making the drawings paid off. Thanks.

[@BR500]

Honestly the best 2 banger engine explanation on youtube

[@hichamnabilnabil]

thank you very much..such a beautiful explanation

[@TheRepairSpecialist]

You're most welcome. Thank you 👍👍

[@raymondfisher6178]

Wow! Best 2 stroke explanation I’ve seen. Very helpful. Thanks!

[@hikeoganessian9729]

Thank you..Someone finally answered my question, of what force causes the piston to go up.. You made it quite clear..thx again...

[@mustanghunts]

Thanks for taking the time to explain this....Fantastic!

[@dusty6345]

Who would dislike this video? Thank you brilliant man with an accent! Uh bravo. You should make a video/ imagery on how the heart works. We could use your ability to teach in nursing school.

[@Raja-kk1zi]

wow ...very clearly explained ...what I got not understand by studying in classes and watching some of videos...was ... clearly explained and very easily understood.thank u for this wonderful stuff

[@TheRepairSpecialist]

pushparaj 666, wow, your feedback is very motivating for me, thanks so much

[@samazd4015]

Great video. All my questions about how the carb works have been answered thank you

[@walterschneider7580]

Excellent video. Very easy to understand. Thank you.

[@oviedoc5454]

Thank you. Very clear, comprehensive and intelligable.

[@townrowclark3797]

Thank you for such a clear explanation. 👍

[@lukebailey4755]

Great video, very helpful. Thank you!

[@dineshr93]

Thanks for the knowledge share. I now know how all the pieces work together. This is masterpiece. this new well intact closely knitted working process of the engine has reduced movement time of humans drastically and benefited our humanity of this decade.

[@frankgibson8861]

thankyou so much i always wondered how a 2strock worked first class explanation sir .

[@michellemaiben4619]

Perfect explanation. Easy to understand.

[@victormedel3293]

What an extraordinary explanation sir my respects!!

[@tndlawncareservices9831]

Thank you so much for these wonderful educational videos!

[@etcetera3545]

Best explanation of anything I’ve ever seen

[@croft628]

the best explanation i have ever heard about carburators ! Thank you

[@TheRepairSpecialist]

croft628, thank you for your motivating feedback. I really appreciate it

[@PATOUH2]

Best explanations of 2 strokes

[@TheRepairSpecialist]

Thank you so much :) -Craig

[@mizanurrahman5800]

Best explanation so far. Thanks a lot for good work.

[@markward251]

brilliant, thanks. that were really, really good!

[@paulwharton1850]

Brilliant ! Thank you - I learnt a lot.

[@TheRepairSpecialist]

All Episodes -for 2-Stroke Carburetors Here. Thanks. Craig: kzbin.info/aero/PLrlXp3PlwgRI5OLvm3P91LJr1CYnO5TRD

[@TheSammieGuy]

Very clear explanation! Thank you!

[@AntonioR1981]

Congrats!! Excellent video

[@brentwejrowski]

exactly what I wanted to see! this is fantastic. Really awesome drawing =)

[@simonrichards7259]

fantastic explanation. thank you

[@tsmithp69]

Really good explanation. Thanks!

[@thearboristangler4715]

Awesome explanation

[@alonsogarcia6518]

What a video. Great job man

[@ronaldomeivogel6777]

Good explanation

[@susanlassan6706]

This was very helpful, and very well done! Thank you :)

[@TheRepairSpecialist]

Susan Lassan, thank you so much for your positive feedback. I really do appreciate it.

[@dylanbutcher3775]

Beautiful. Thank you so much!

[@balasubramanian4314]

Thank you sir for clear explanations. If one understood about human heart chambers pushing the blood to diff. Chambers. Same logic of heart lung mechanisms... god is great..

[@gregrichard9192]

Great explanation 👍

[@IceAngler]

this is brilliant. thank you for the perfect explanation.

[@TheRepairSpecialist]

TotalBogie thank you for your positive feedback. I really appreciate it.

[@gavinwallace7083]

Awesome video!

[@stevew3882]

Great teaching!

[@ronsbeerreviewstools4361]

Thanks for this post , its very informative.

[@cheapsmoke4096]

Wow what an incredible illustration and explanation

[@TheRepairSpecialist]

Thank you for your nice feedback. I really appreciate it. Craig

[@williamcartwright638]

Very well described Thank you

[@tredner1990]

Very educational and interesting

[@karayocum8847]

Superb!! Thank you!!!!

[@WallytheRapper]

Well explained.. thank you

[@tomtom1484]

Perfect explanation! Thank you!

[@TheRepairSpecialist]

Thank so much

[@jarkkolaurila3534]

So good video! The drawings are beautiful. English isn't my main language, it's finnish, but I still understood what you said and I now have an idea how the engine works. I'm getting a Beta RR 50 super motard track when i turn 15.

[@Kutkornersmasta]

Great video thanks a lot!

[@lupedelacruz4152]

Very nice amigo so that's the Reed valve on top of my 2-stroke cs-400 chainsaw that's why it wouldn't stay on correct cuz it was off thanks again

[@cinninnimonskoda2017]

thanks again, another brilliant video and explanation

[@TheRepairSpecialist]

I'm really pleased you think so and I'm grateful for the kind feedback.

[@1998hunting]

great explanation only thing is you could give an easier to understand explanation of the gasket that you said goes up and down due to pressure just maybe due it slower though otherwise still very thankful did not understand how it worked till now going to college at moment thank you, tyler

[@alantaylor6691]

Terrific, thank you.

[@G224tnar]

Excellent video, well explained and demonstrated. Liked and subbed

[@gregb.5796]

You are wonderfully articulate.

[@TheRepairSpecialist]

Greg Brannan, thanks so much for your positive comment. I really appreciate it

[@amina-pf1bs]

thank you so much craig!

[@hercegmj]

Awesome video.

[@TheRepairSpecialist]

thanks again for your generous feedback, it all motivates me to continue with these videos.

[@runnervxr210]

Really great video

[@TheRepairSpecialist]

Glad you enjoyed it

[@faraivudzijena1825]

Brilliant !

[@Rabb865]

Yoh are brilliant sir what an amazing teacher you are thank you for this

[@soccerrefeducation]

very good

[@jbbolts]

here's a quick translation into layman's terms...it's MAGIC!

[@jbbolts]

seriously though it's utterly fascinating that all this cycles hundreds of times per second... mind boggling

[@curseofa5r5a]

By far the best video on the topic

[@TheRepairSpecialist]

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

[@curseofa5r5a]

@@TheRepairSpecialist I just want you to know that your effort have a positive effect on people's lives, I am a automotive mechanic but things are slow in my country due to the pandemic, just landed a job fixing small engines and I been binge watching all your videos on this platform, if I ever last in this job doing something I wasn't trained for and putting food on the table it will be thanks to you, best wishes, Cristian

[@TheJosh1022]

Excellent video

[@TheRepairSpecialist]

Thank you very much!

[@colintinker6949]

Excellent

[@tommyandtammy1]

Excellent Video God bless.

[@Sahkopekka200]

Can you make a similar video for high performance 2 strokes (like for example a motorcycle engine) with slide carbs, proper exhaust systems and port timing in more detail? Somebody might want that too but I really like the simplicity of this video! :D

[@sujithputhalath1994]

Thank you so much..!!🌷

[@timdavanzati7510]

🙏 thank you

[@TheRepairSpecialist]

You are so welcome

[@tomeyles3520]

excellent, if you are not a lecturer you should be. clear and concise.

[@steven36097]

What a great explanation! Thanks, it helped me a lot!

[@TheRepairSpecialist]

steven36097 thank you so much for your positive feedback. It's comments like yours that keep me motivated to continue to put these videos on my channel. Thanks again. Craig

[@steven36097]

I just started on a Marine Mechanics course and I still have to work on my english skills, so I wasn't getting it at all with the manual, that's why this helped me a lot. I'll be around your channel a lot lol. Thanks to you again.

[@3anthos]

Art!

[@Kotikjeff]

First class lesson

[@rods6405]

Top Video Thanks!

[@TheRepairSpecialist]

Thank you too!

[@kgutierrez156]

Amazing