CHAINSAW CARBURETOR FUEL SCREW SETTINGS do this Inside Carb | FASCINATING!
Автокөліктер мен көлік құралдары
* VISUALLY EXPLAINED
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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!
The fuel adjustment screws in a small two-stroke chainsaw carburetor play a critical role in controlling the air-fuel mixture, which is essential for engine performance and combustion. Here's how they work:
Fuel Adjustment Screws: In a typical chainsaw carburetor, you'll find two adjustment screws - the high-speed screw and the low-speed screw. These screws are sometimes labeled as 'H' and 'L' for high and low-speed adjustments.
Air-Fuel Mixture Control: The purpose of these screws is to control the air-fuel mixture that enters the engine. Adjusting these screws allows you to change the ratio of air to fuel, which directly affects the engine's performance at different RPM (revolutions per minute) ranges.
High-Speed Screw (H): The high-speed screw primarily controls the air-fuel mixture at higher engine speeds or when the chainsaw is under load, such as when cutting wood. Turning this screw clockwise (clockwise = 'richer') will increase the fuel-to-air ratio, making the mixture richer and providing more fuel. Turning it counterclockwise (counterclockwise = 'leaner') will reduce fuel, making the mixture leaner. Proper adjustment ensures optimal performance and prevents the engine from running too hot.
Low-Speed Screw (L): The low-speed screw controls the air-fuel mixture at idle and low engine speeds. It's essential for smooth idling and starting. Turning this screw clockwise (clockwise = 'richer') will provide more fuel at low speeds, making the mixture richer. Turning it counterclockwise (counterclockwise = 'leaner') will make the mixture leaner. Proper adjustment ensures the chainsaw idles smoothly and accelerates without hesitation.
Initial Settings: To adjust these screws properly, you'll typically start by turning them gently clockwise until they lightly seat (don't overtighten). Then, you'll turn them counterclockwise a specific number of turns as a starting point, according to the manufacturer's recommendations. Fine-tuning is done by gradually turning the screws in small increments and observing the engine's performance.
Optimal Adjustment: Achieving the optimal air-fuel mixture is crucial for both engine performance and longevity. Too rich a mixture can cause carbon buildup, fouled spark plugs, and excessive smoke, while too lean a mixture can lead to overheating, poor performance, and potential engine damage.
Regular Maintenance: Keep in mind that carburetor adjustments can change over time due to factors like fuel quality and engine wear. Regular maintenance and occasional re-adjustment may be necessary to maintain optimal performance.
In summary, the fuel adjustment screws in a small two-stroke chainsaw carburetor allow you to control the air-fuel mixture at different engine speeds. Proper adjustment ensures the engine runs smoothly, delivers optimal power, and operates efficiently. It's essential to follow the manufacturer's recommendations and make fine adjustments carefully to maintain the chainsaw's performance.
Whether it be a Chainsaw Carburetor or carburettor from any other two stroke engine, the information given here will help you understand exactly what the adjustments are all about and demystify those dreaded fuel adjustment screw settings. This of course will give you the foundational understanding of how to tune a chainsaw for instance, or generally how to tune a two stroke carburetor. Because I'm asked mostly how to adjust chainsaw fuel screws, I made this video to help give a firm understanding of that.
I hope you find this video useful, and I really hope you enjoy it.
Many thanks indeed
Craig Kirkman (Owner and Creator of The Repair Specialist Channel)
#ChainsawCarburetor #TwoStrokeEngine #FuelAdjustmentScrews #ChainsawMaintenance #ChainsawTuning #EnginePerformance #AirFuelMixture #CarburetorAdjustment #SmallEngineMaintenance #ChainsawPerformance #FuelScrews #ChainsawTips #EngineTuning #ChainsawRepair #LawnEquipment #PetrolChainsaw #ChainsawHacks #HusqvarnaChainsaw #StihlChainsaw #EngineEfficiency #CarburetorSettings #EngineCare
Пікірлер: 277
Hi guys I just wanted to Introduce to you my other Channel "Things to Know" - which i'm just getting started. It's a go-to channel for insightful worldly explanations, handy tips, and expert advice on everyday things and repairs of domestic items. Here is the link: kzread.info/dron/O8P9x5kUZ44Fb11vanLFsg.html
I have been a small engine mechanic for 11 years. I still can learn from you and these very informative videos. You do a great job explaining what is going on and I always learn something I didn't know when I watch your videos. PLEASE!! Keep up the great work you do.
@MuttTheBuckeyeSlayer1977
Жыл бұрын
What size pac man adjuster do in need for the 46 cc Remington chainsaw
Very, very good explanation. So much work went into this from your side, so we can enjoy 18 mins of proper teaching. Thank you!
Wery proffesionally explained and it helped me lot, thank you.
When adjusting the H screw at wide open throttle with no load on the saw, we should leave our mixture slightly on the rich side (lumpy). Because when the saw is engaged in cutting some wood it needs slightly more fuel and if we set the H screw perfectly at no load we will be slightly lean while under load and we risk engine damage from a too lean condition if there’s not that extra bit of fuel/oil mixture. Better a little lumpy than a little lean. Thank you.
@RwP223
2 жыл бұрын
Fortunately my chain saw cuts air because it's actually a paramotor, that uses a chainsaw carburetor 😉
@GripFreak
Жыл бұрын
You're correct! It should be slightly 4 stroking and cleans up in the cut.
@davebaker3003
Жыл бұрын
🎉
@achyar9034
Жыл бұрын
👍👍👍👏👏👏
@harrygmarshall5157
Жыл бұрын
👌🏻👍🏻👏🏻
OUTSTANDING VIDEO this is best video on Carbs and should be used in all trade schools....
This is pure gold! 🥇
One of the most informative videos I've ever seen.
Mister Kirkman you have no idea how much i enjoy your work many thanks!!!
Your diagrams are excellent. Understanding what is happening in the carb is as important to me as making it run right. Thank you good Sir for your thorough Britishness.
@TheRepairSpecialist
Жыл бұрын
Thank you so much for your nice feedback. I really appreciate it. Craig 👍👍👍
Clear and concise, excellently presented. Well done.
@TheRepairSpecialist
Жыл бұрын
Wow. That’s some real good feedback. I really appreciate it. Craig 👍
Hands down best instructional video. Answered every possible question i have and solves all my current problems as well as address all the other ones I may run into. Don't forget the amazing animation to really put it into perspective. Well done 👏
@TheRepairSpecialist
Жыл бұрын
Thank you for your awesome comment. I really do appreciate it. Craig 👍
What a great explanation with visual diagram.Thank you very much
At 65, this old dog now has new tricks, because of your careful teaching. THANKS!
@TheRepairSpecialist
7 ай бұрын
Thank you so much for taking the time to let me know that. I really appreciate it. Craig 👍
An immense amount of knowledge gained, in such a small amount of time. A really informative well balanced video with great diagrams. You presented this at my level of understanding, and at no point talked down to the viewer like many videos availible, by other channels.....Forgot to mention ,my chain is now running perfect! Many Thanks.
@TheRepairSpecialist
Жыл бұрын
That’s some of the best feedback I’ve had. Thank you so much for taking the time to comment. Craig 👍👍👍
Brilliant explanation Sir, and I thought I knew these carbs ! thank you for your time
You do the best job at explaining things in very easy to understand detail
@TheRepairSpecialist
Ай бұрын
I appreciate that! Craig 👍
Amazing video, thanks! I appreciate the sound bites throughout your explanation as well as the diagrams. Extremely helpful. With your instruction, I fixed up a 2-stroke mantis tiller I found on the side of the road.
one of the best teaching on how carburetor work, excellent !!! thanks so much !!!
Nice video I've been a mechanic since the 80's great information 👍
@TheRepairSpecialist
9 ай бұрын
Thanks for watching! I really appreciate it. Craig
Perfect Clarity ! , totally understand these little marvels.... and the diagrams are on point , love that u included the sounds at the current diagram displays...thanks man, Awesome job, you definitely would make a great teacher...also what John C said is a contribute..thank you as well!
After watching this very well diagramed, and explained video, I can now see exactly how these carburetors work. I'm so impressed with your clear explanation. well worth watching.
@TheRepairSpecialist
4 ай бұрын
Thank you very much! I really appreciate your kind and motivating feedback. Craig 👍👍👍
What a great video... learn somthing new every day !!
THANK YOU!!! Great educational for non-specialists. Finally I do understand.
What an easy to understand, very useful video. Thank you.
Best carb adjustment video I ever seen. Been having problems with my wood boss and can never get it right. Hope this information isn't lost in my head by the time I get to it lol
Just now, I adjusted my ECHO CS 350WES carburator and I cannot do it well. I watch your teaching video and solve my problem. This is a very good channel. Thank you very much.
Really learning from your clear explanations and excellent graphics. Well done. I'm only a recent subscriber so am going back through your previous videos. Great content. 👍
@TheRepairSpecialist
Жыл бұрын
Awesome, thank you! I really appreciate it. Craig 👍
“I believe “ it did. Thanks bloke so much in “our” tongue. 🇬🇧‼️
Very knowledgeable and a great teacher you are. Thank you sir this video was very helpful
Thank you so very much, excellent explanation, excellent graphics.
This video is by far the best I’ve found on carb tuning for 2-cycles. Maybe it’s chainsaw specific but I imagine weedwackers and others are set up this way. Your diagrams, demonstration footage and explanation of each symptom are fantastic! I will be tuning my chainsaw tomorrow using what I learned from this video. Thank you!
@TheRepairSpecialist
27 күн бұрын
Thank you so much. I really appreciate it. Craig 👍👍👍
I Just Discovered your channel, And Man I'm Glad That I Have !!! For The Most part This is Information that I Know,,, " But " This Definitely Help's Because I'm A Visual Learner, and I've Definitely Have A Much Better Understanding of What's Going On In There. ( " The Black Magick " ) Voodoo, of the Small Metal Cube. Thank You For Your Time and Effort...
Best video on the subject so far!
I just got this comment on one of my videos: "Unlike every other two stroke engine, chainsaws have but one fuel mixture adjustment: the L screw. The H screw does not alter the mixture at full throttle, it only controls maximum speed." I sent him a link to your video. Hope you can help him out. Stay well, Joe Z
@TheRepairSpecialist
6 ай бұрын
Thank you Joe Z. I really appreciate it. Craig 👍
@JOEZEP54
6 ай бұрын
@@TheRepairSpecialist You're welcome!
Best vid on setting and why. thank you for the excellent digram, great for getting the info across to the novice.
@TheRepairSpecialist
3 ай бұрын
Thank you. I really appreciate your kind and motivating feedback. Craig 👍
What a great visual of the two cycle carburetor. Well done!
Brilliant, clear and very helpful. Thank you
Thank you for taking the mystery out of how the carburetor works. The diagrams are very helpful
Thank you for the informative video. I learned something today and that is always a good thing. Never too old to learn more.
Awesome Video mate! Just the sort of detailed explaination i was looking for!!
I've always gone back and adjusted the high and low screws a second time. Now that I've learned that both circuits send fuel simultaneously and affect one another, it seems I was justified in doing so. Thank you. I learn so much from you and am still learning some basic things.
@TheRepairSpecialist
Жыл бұрын
Thank you for your nice feedback. I really appreciate it. Craig 👍
I don't normally comment, however this was so precise, so complete, I just have to say thank you for an awesome tutorial. I will look out for more!!
Thank you for the simple yet detailed explanation. You helped me a lot with ease😉
Wonderful, magnificent, stupendous, all-encompassing, excellent, etc. Oh, and terrific, too! Thanks for helping us understand how the carb works.
Great practical video, just helped me sort my chainsaw problem... the best information available so many thanks👍👍👍
Excellent so informative and so well explained I always learn from these videos. Thank you
Brilliant. Made carby management so easy.
This is really helping me out of my conditions thanks for uploading such an amazing video
Excellent job on this video
Brilliant teaching!
awesome job sir!
Your videos are very knowledgeable and well explained thankful for your efforts greetings 💐💐💐💐💐
Very well done! Thanks for sharing.
this helped me a lot sir, greetings from the Philippines.
Well done Craig very well explained 👌
Excellent information. Im experienced and know exactly how to tune any carb, but loved watching your explanation and especially liked your sound clips. Great stuff for those who are learning.
Excellent video , thank you
Awesome video man.
Abslutley fantastic and helpfull video. While watching this video paralelly adjusting of my chainsaw was made. Brilliant! Many thanks!👌🏻
Bravo! Nicely done and very informative. Thank you!
yes the best explanation is to understand what the screws do so we can meter these screws in relation to the throttle... took me a while for the penny to drop ... thanks so much
@TheRepairSpecialist
Жыл бұрын
Thank you 👍👍👍
Nice explaination bro👍 it's informative tutorial with visual effects of how carburator works of high and low screws👏👏
This is excellent for years I have known what screws to adjust on small engines but never really understood why. Now I do and whats more I could explain that to someone else now.
Great explanation.
A great presentation
Fantastic description and graphics.
WOW just come across your channel that video is the best I have ever seen, on explaining how the carburettor works and how to fix it well done to you 👏 👏 👍 😊😊
@TheRepairSpecialist
Жыл бұрын
Wow, thank you! I really appreciate it. Craig 👍👍👍
This is an absolutely brilliant film. Thank you so much!!! Keep up the great work 🙏🏻🙌🏻
Think you for the video's I can understand it more. Helpful. So much
Excellent explanation! Thank you for your tips.
@TheRepairSpecialist
Жыл бұрын
You're very welcome! Thanks. Craig👍
Well done!
Amazing share thank you !!!!
Learned heaps here. Thanks, mate!
Well done. Thank you
Best video on the subjekt ever!!! Impressive. I particulary like that you show how it looks in reality.
@TheRepairSpecialist
Жыл бұрын
Thank you for your very king feedback. I really appreciate it. Craig 👍
Hi Repair Specialist.@Quality video,Thank's For Help.
As Always Great Vid Very Informative That for Sharing
Excellent presentation
Great Video!
Excellent video rich information, many thanks and highly appreciated.
@TheRepairSpecialist
Жыл бұрын
Thank you for your awesome comment. I really do appreciate it. Craig 👍
Thank you, thanks to your video I have found the settings for my machine. 🙌🙌
@TheRepairSpecialist
Жыл бұрын
Thanks really good to hear. Thank you for letting me know and for your nice feedback. Craig 👍
This is so helpful thanks
Excellent explanations…
Una guida curata e ben fatta!! Thank you from Italia!! 😎♥️
@TheRepairSpecialist
Жыл бұрын
Thank you as well. 👍👍👍
Excellent!
Thanks for the tutorial. These little carburetors are used to fly paramotors. They have to be cleaned and tuned perfectly to ensure reliability when flying. Appreciate you sharing this!
Thank you, I learned quite a lot. Now to the non functioning chain saw I'm about to give up on.
good work! Thank you so much
FABULOUS VIDEO! Great illustrations and very informative explanations to go along with everything! Thank you!!
@TheRepairSpecialist
Жыл бұрын
Thank you for your nice feedback. I really appreciate it. Craig 👍👍👍
@DadBradTo5
Жыл бұрын
@@TheRepairSpecialist You more than EARNED IT!! Thanks again!!
Perfect explanation! Thank you!
@TheRepairSpecialist
4 ай бұрын
You're welcome!
Perfekt explained. My English is not good, but I understood it. Thank You very much
@TheRepairSpecialist
7 ай бұрын
You are welcome! Thank you very much.
Excellent video! Thank you very much!
@TheRepairSpecialist
9 ай бұрын
Thank you very much!
Good video!
Thanks again Les Aus
I just like to say your videos are very good. I have been working on small engines for over 40 years and your layout and explaining could not be better. Thank you sir keep up the great work :)~ Stay~Safe
@TheRepairSpecialist
7 ай бұрын
Thank you very much indeed. I really appreciate your kind comment. Craig
the best explanation i learned so far
@TheRepairSpecialist
Жыл бұрын
Wow, thank you. I really appreciate it. Craig👍👍👍
Good video.. easy to understand and can hear what was u saying although im not good at english language
Never knew there was a reservoir. 😁😎👍
@FlattardiansSuck
2 жыл бұрын
3 smaller holes gives better fuel atomisation at low air speeds, and the reservoir maintains consistent fuel flow to the 3.
Very informative..