Chainsaw Carburetor Problems - 12 PROBLEMS TO AVOID! (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 😊👍

[@juliawockenfuss4982]

Great Video!!!!! I'm a woman and I try to do all these repairs myself and I was able to fix my weed eater with your help. Thanks

[@michaelekpekosi7524]

well done

[@susanlouis-seize3328]

Thanks for posting this video. My husband has been struggling with his chainsaws and this has helped him immensely. He said, “it’s pretty good of him to take the time to post this for our benefit!” Much appreciated 😊😅

[@TheRepairSpecialist]

You are so welcome! I really appreciate your feedback. Craig

[@bchrisl1491]

I found a mounting strut loose on a Briggs & Stratton single cylinder. Tightened the stud, and fixed the air leak. Thanks for the tutorial. Well worth the watch.

[@TheRepairSpecialist]

Thank you so much for the nice feedback. I really appreciate it. Craig

[@angelayala7831]

I'm from Puerto Rico and your English is so clear and easy to understand. You never know how much you had helped me. I had seen lot of your videos. God bless you a lot. Thanks.

[@trillykolla8347]

I am a visual learner. This is amazing. This is so easy to understand. This was all like a kindergartner attempting calculus for me. It seems so simple now. The problems, the solutions, the diagrams as a visual aid. Thanks for this 🙏🏼

[@martialme84]

My tired brain lacks the words to express how helpful this video is, right now, but still. The clarity of explanation..... the quality of illustration.... You, Sir, are a god damned hero of the garage tinker/diy-repair/lay person world. I take my hat off and bow to the effort you took and your awe inspiring success at this task you took upon yourself.

[@MrHarpette]

1. 1:23 Mixture screws adjustment - See also kzbin.info/www/bejne/baG0Z4mfp5aorsU 2. 4:54 Fuel tank : fuel filter & tank cap breather hole 3. 8:21 Fuel pipe 4. 9:10 Inlet manifold 5. 16:03 Fuel pump diaphragm 6. 22:28 Fuel vein blockage 7. 32:39 Metering diaphragm - See also kzbin.info/www/bejne/hJPConp6qbVmn7M 8. 48:20 Metering lever 9. 50:57 Metering spring 10. 52:59 Barrel/pot gasket 11. 55:51 Crankshaft seals / Main seals 12. 1:00:34 Stale fuel

[@TALLYTHER]

After having watched hundreds and hundreds of videos on similar subject matter I can't sing enough praises for yours. Granted it is a bit long but absolutely necessary to achieve the exceptional clarity you provide. Anyone who won't watch the whole thing doesn't deserve the knowledge you attempt to share. I'm a civil engineer and a professional instructor in several technical areas. At no time have I seen anyone with your ability to simplify and elucidate on such a major issue that has dozens of causes. I consider myself privileged to partake of your instruction. On the whole of my internet experience I have subscribed to only a few sites. I have learned as much on providing instruction as I have in content here. I shall add you to my very few favored providers of instruction. Thank you for your efforts in this regard. Sincerely, Kenneth E. Weldon, PE>

[@TheRepairSpecialist]

Wow. If ever I had positive feedback then this is the day I had it. Thank you so much for taking the time to leave this feedback, it keeps me motivated to continue. Many thanks again. Craig

[@hughsolorz5184]

Hands down the best explanation on the internet ever. Believe me I've been through lots trying to get my equipment working properly. You're mention of the tightness of the long bolt and screws holding everything together preventing air leaks is gold . I overlooked that focusing on the obvious. Excellent work sir. many thanks from sunny California

[@lukez1729]

This.

[@Sprnklrmn]

Out of all the mechanical (car, power tool, moto) videos I've seen these are by far the best. Really great carb explanation. I've struggled with tuning/repairing carbs but at least now I have a much better understanding. Thank you for the time and information.

[@minohaong8251]

Dear Sir,I don't know how much thanks to say in here to you. But after I watched this video that I understand completely the concept of the carburetor in a small engine. Also I had a Echo back pack blower that was given me a hard time to start. The problem was found in the metering diaphragm. Replaced new diaphragm and I'm back to the business. Thanks so much for your time to explained and work thru every single steps. Please keep posting. You were a big helped a lot of us out here.Regards, Mino Haong

[@williewebster2989]

Hi. Thank you. This is one of the most comprehensive, easily understood tutorials on 2 stroke engines I have every seen. I am no expert but this raises my awareness of the beauty of engineering and the methodical approach to solving issues. Thank you for the time you have invested in this. Regards Willie

[@MrBendemiC]

Your wealth of knowledge and thorough explanation of how carburetors work helped save my rancher 460 from a new carb. Many thanks!

[@anniversary4]

truly a work of art! you sir are a master at teaching. so precise, organized and clearly presented. I feel I could show this to my 8 year old grand daughter and she could diagnose problems after viewing this..

[@TheRepairSpecialist]

Thank you so much for your motivating comment. It's comments like yours that truly help keep me motivated to upload these videos. Thanks again. Craig

[@KirkyRC]

Many thanks for spending the time to put this video together. After watching it i now feel confident in servicing my Weber Carb with new diaphragm and gaskets and re-setting the high and low needles in my 2 stroke aero engine. Thankyou!!

[@timplatts1199]

Thanks for the very helpful video. I failed to notice it was over an hour long, which was just as well as I may have missed what was so helpful! I was inspired to fix a poorly pole chainsaw. Now works sweetly. I was cleaning my father's mower carb when a child but never had a clue what was happening... Now 50 years later it is clearer. Then fixed an electric mower, electric scarifier and finally my troublesome old Honda powered 4 stroke mower. Using some of your principles, and others ideas. Then cut the grass! Other folks comments cause no little levity and so glad you were polite even with some provocation. Thanks again for your efforts. Keep up the good work.

[@tattoo62]

you do a great job showing and teaching this !! you are about the only one on any subject that explans everything !! thank you for taking the time to help us all !!!

[@TheRepairSpecialist]

Thank you so much for your motivating comment, really do appreciate it. Thanks again

[@hhoward14]

A difficult job well done.Thank goodness for "video", this man's skills and generosity. and for KZbin.Many thanks.

[@ronaltaylor6875]

hhoward14

[@johnschempp2342]

bait chum

[@andrewmantle7627]

Amen

[@mick75488]

Andrew Mantle UU. U tor Can.

[@drewlarson65]

well said, now i can like you comment instead of making my own :D

[@johnheigis83]

Low is adjusted for quick trigger response, and the high is adjusted for high speed power. I always adjusted the high to rev at its highest speed, and then opened it slighty more, to provide extra lubrication into the engine, but not so much to lose power. This prolonged the life of the engine. ( I fell timber, in my younger days, and always re-kitted my own equipment carborators.)

[@mosquitok833]

Great video. The carburetor remains a mystery to many people who own small engines. Thanks for taking the time to be so thorough and patient during your explaining it all.

[@banger355tw]

I want to thank you very much for creating these videos. I am a retiree (a toolmaker in fact) who hasn’t had a great deal of experience with small engines. And, being a retiree I don’t have the financial means to take classes on the subject. I have however found that I can acquirer mowers, weed eaters, etc. for little or no money at all. Great joy! Having the material to then work with all that is lacking is the knowledge which is where you have greatly blessed us. For this we are in your debt. Thank you again. T

[@frankguemmer1238]

What a superb teacher you are ! Thank you for taking the time and effort !!

[@Scanjoon]

A professor! This should be on a CD and used in all small engine tech schools. A fantastic visual and clear explanations and descriptions.

[@roberthaehnel3137]

Derek Charette your a prick

[@awalt26439]

This video without doubt contains the know-how of an expert and it is also fantastically well put together. Thanks.

[@TheRepairSpecialist]

Wow. Thank you so much for your very positive feedback. I really do appreciate it. Many thanks indeed!

[@filobo4]

Thank you for sharing your knowledge, I never own a weed cutter before but after 1/2 a day of usage it bogg down. after watching your video, I was able to get it working again.... MANY THX...

[@michaelosmon]

It is abundantly clear to me that you spent considerable time creating and assembling this very thorough presentation. I appreciate you very much sir. Thank you for sharing your skills knowledge and experience

[@TheRepairSpecialist]

Wow. That was some amazing feedback. Thank you. I really appreciate it. Craig

[@loopbreaka]

Your thorough run-through was very helpful. You completely went through the entire system and didn't exclude important factors like combustion. Thank you very much for taking the time to do this.

[@redstag5428]

I’ve put up with my saw bogging down for over a year had it to the experts and no better watched this video and now it runs as sweet as a new one thank you

[@TheRepairSpecialist]

red stag, brilliant, I'm really pleased it helped. Thank you for letting me know. 😊👍

[@alancase6452]

Wow. Wow. Wow! I’ve watched half of this video and decided to take a short break so that my attention to your details is maintained. This is not a complaint, rather a tremendous compliment to the thoroughness of your effort. I am getting an education on carburetors like never before. I’ve just recently begun investing more time into self diagnosing and fixing my various machines, and although I’ve gained tremendously from many other “how to” videos on KZbin, this clearly spoken, well thought out visuals/animations, and altogether wonderfully educational video is a real treasure. Thank you sir for the exquisite and time consuming effort you have put into this to share your obviously abundant knowledge. Alan

[@J-MeEvansMusic]

Thank you so much for this video. I'm a mechanic by trade, and a very talented one if I must say so. I rebuild automatic transmissions for a living, but for the life of me I've struggled with keeping any of my 2 stroke stuff running, and people give me weedeaters, tillers, leaf blowers etc... Cause they think since I'm a mechanic I can fix it, and put it to use, but I've struggled with 2 stroke for whatever reason, so I sit on dozens of 2 stroke freebies people have given me, but can't seem to keep any of them running for more than say 20 minutes, but your video was amazing. 90% of the stuff I have has a bog down issue under full throttle. your video has helped me to fully grasp, and understand how these motors work, and have helped me to understand what I've been missing. Now time to raid the tool shed, and my plethora of bog down issues, and get some stuff fixed! thank you soo much for you're clarity sir. it is more than appreciated!

[@RobertMertensPhD]

Understanding the concepts and principles of operation is probably ten times better for me than all of the "how-to" videos I've come across so far. I've already gone through the carburetor five times, and even replaced the two diaphragms, after this video, I went through it once more, for all of the little things I neglected to check, and decided the problem wasn't there. The Stihl MS 310 isn't quite the same as this, but the principles are the same. I made it my plan, to go through this list, one item at a time, and the most likely culprits first. The next most likely seemed to be the fuel line, and although it looked fine, a little bit of air pressure revealed it to be broken. Problem solved! In a matter of about one hour, a problem I've been chasing for two weeks, now (about six years, of you count the time it's been sitting because of this problem). This will help in my neighborhood, after the destruction wrought on us, here in Florida, by Hurricane Matthew. Thanks for this brilliant and comprehensive video.

[@williammanning3174]

Robert Mertens I have a Stihl MS 210c chainsaw and found it's problem to be a cracked "dry-rotted" fuel line with a tiny hole in it. I suspected that was the problem for a good while but couldn't confirm it til I just happened to have the air filter cover off and noticed fuel spraying out of the fuel line. Whatever the case may be, my friend...stay inquisitive and always do your research. KZbin is a TREMENDOUS tool for learning. Use KZbin for all it's worth!!

[@utubehound69]

Lawnmower shops don't want to deal w/these lil 2 stroke engines. They all use Zaymmer Carb's almost. I just learned tonight about the "SPARK ARRESTOR" that completely cloggs up & cause the engine to idel but not run i.e. no where for the burned fuel to get out cause bog down. I've never seen a lawnmower man speak of that. But I would bet a dollar thats whats wrong w/my Ryobi I bought a new Carb for my Pouland after trying 2 battery powered trimmers one only had one line 20v Lithium so I tried a 40v two line trimmer it was DOA batteries wouldn't charge. So I knew there be someone like this gentleman that covers this on a school level instruction very good resource for sure.

[@williammanning3174]

Watchman4u If you're having problems with your spark arrestor clogging up, you may be putting too much oil in the gas. If the tool in question is a Stihl chainsaw, then it probably wants 50:1. Too much oil can cause other problems with carbon buildup. My old Ryobi trimmer called for 32:1 and it stopped running because the ring got stuck in its groove and it lost compression. The truth is that you never need any more than 50:1 but the carburetor will have to be adjusted to use that ratio properly. Adding more oil to the gas will lean out the air/fuel mixture while decreasing the oil will richen the mixture. If your carb requires a special tool to adjust the screws, just cut a groove in them with a hacksaw. Be careful to not cut too deep. You can find detailed instructions on how to tune a 2 cycle carb on the internet too. I hope this helps.

[@alancampbell1008]

Absolutely excellent tutorial. Very easy to understand, now all I've got to do is work out why my saw idles, accelerates a bit, bogs down then picks up to full power. I'm thinking I've got a bit of dirt somewhere. Thankyou for explaining so comprehensively but in layman's terms.

[@derekwade7471]

I have an Old 2 stroke Mantis. The manual is useless. Watching your video is like manna from heaven; wonderfully explained. I wish that I could buy you a pint!

[@rogerazcona804]

Your video has been the best I’ve seen explaining how a two stroke engine works! Thank you for passing your knowledge!

[@johnnywirtz4905]

Wow......you have sent my mind to my ninth grade power mechanics class! Only this time I am actually learning something! You are a natural educator and I am thankful for your contributions to KZbin. Thank you . Johnny

[@daltong6898]

Lotta time into these drawings! Appreciate the attention to detail!

[@CaseyMillerhome]

When I saw that this video was going to be over an hour, I almost left the site. However, the author hooked me with his clear commentary, his plain speaking style and his knowledge of the subject. I managed to watch the whole 1 hour video and that is great. But, this video is really long and I think that it could be edited down to about 20 minutes. There is a lot of information but a lot of the information is long winded and the target audience should already know where the author is going with his explanations. I didn't like having to watch for an hour to see a lot of information that I already knew. BUT! I did learn a lot about 2 stroke carbs that is very valuable to me. I feel that tomorrow I could hang out my shingle and do small engine repair thanks to this video. I feel like I just received a master's degree in small engine repair. Thanks so much!!

[@carlosbah4623]

Wow impressive. The most comprehensive video in the subject in all internet. ¡gracias por compartir!

[@TheRepairSpecialist]

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

[@anthonyspeters7203]

Well done Craig! I've been working on engine's most of my life since age 16,mostly car,sometimes b&s mower engine, I've good grounding in4stroke mainly by experience, reading ive got a number of 2stoke engine's whilst understanding principles of them, didn't have a clue on carb, youve now lifted the mist on iner working, your tutorials of tbat carb was fantastic really enjoyed watching learnt so much! By trade I'm electronics engineer ,l never dump anything, if it's broke l can fix it providing get spares, am very hands on not much l can't do,building/roof repair plumbing/heating systems, and I'm trained chef! Lot's of experience now aged 72 thanks great tutorial! Stuart

[@seabass22]

I’ve had issues with air lock on my zero turn, due to fuel cap not venting. Actually took the cap off one side and swapped with the other side, to diagnose it. Took the cap apart and the check valve inside was fine. Cleaned the cap, and didn’t have another issue.

[@TheRepairSpecialist]

Fantastic! Thanks for sharing. Craig

[@FRANKSBESEK]

No words of praise could possibly thank your attention to sharing your knowledge with us. God Bless You and your endeavors of kindness. Your presentation was UTTERLY REMARKABLE. My best to you always. Stay well sir !

[@hermannreindl9721]

Fantastic explanation in clear, precise and easy to understand language. No wasted words what so ever. Thank you so much! Well done.

[@digitalfun59]

This video should go viral. Good info.

[@TheRepairSpecialist]

Thank you for your kind words

[@LLuE88]

in '67 I exposed the department I managed with hydraulic valve cutouts (from otherwise failed units) so that the younger hands could easily see/understand the workings of various internal components of many parts we used, much like the drawings you show here. this does a wonderful job of explanation. regards.

[@fiddeff]

Best engine troubleshooting video i've seen so far. Thanks a lot sir

[@georgelaputka1705]

Great video The only thing I would add to the discussion is primer bulbs can crack and cause an air leak and bogging. Eventually difficult cold starting as well from a bad primer bulb

[@mikeforwarduk]

I so appreciate you taking the time to do this. You are a very good teacher

[@arthurfricchione8119]

Your videos and operational descriptions are the best. Truly are the best at explaining how systems operate. Thanks much. 👍

[@onroad3499]

Hi i am from Brazil and found it very interesting this video, I live on a small farm and use a lot of mowing. Right now my mowing does not have acceleration and became very clear to me how the carburetor works.

[@michaellandi1090]

Thank you for making a subject I knew very, very little about and educating me. I learn better from videos and pictures, than I do through just mere words. Thank you for taking the time to make it.

[@garofalo1707]

I never learned so much from watching a you tube video and I watch a lot of repair videos.👍 and subed

[@jamtin3977]

Excellent in depth educational informational video. Thankyou, appreciated from Australia. 👌

[@danielfalcon4266]

Best comprehensive video I have seen regarding potential problems and remedies. Thank You for making this video. I will now attempt to locate the problems with my outboard.

[@TheRepairSpecialist]

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

[@mattm6430]

Hate to be back watching this vid again, but so thankful it exists. Love TheRepairSpecialist channel!!!

[@daved299]

Excellent explanations and illustrations. A great overall educational video. Well done!

[@mahoshing5248]

Very thorough and clear as to the fundamental principles of operation. This makes so much sense in diagnosis of small engine repairs. Really awesome. Thank you.

[@greenman407]

Awesome Video. You answered so many of my questions that I have had for so many years. Thanks so Much

[@bogdantlro]

Fantastic, thorough explanation of how carburettor works. Thanks to this I have fixed my chainsaw. Thanks!!

[@alanbennett7635]

Excellent Excellent Excellent explanation !!!!! By far absolutely the best display and explanation on KZbin for 2 stroke Carburetor discussions. You by far should be quite proud of your work and generosity to share knowledge. Well done SIR - THEREPAIRSPECIALIST - Thank YOU THANK YOU. You have taken an amateur with serious curiosity & desire - and have made me closer to a professional. I commented on one of your early videos with recommendation to include the diaphragm understanding for/with the H & L adjustments. You have outdone yourself and everyone on YouTude with an absolutely brilliant outstanding solid understandable discussion/illustration/display. Me Hat is off to you - THANK YOU TO THEREPAIRSPECIALIST If there were more people like you in this world - it would be a wonderful place for all to grow peacefully enjoy. Thank YOU - ALAN

[@gregohare6412]

This is one of the best, if not the best how to video I have every seen. I am sure it took alot of time to create and that it is free to the viewer is a real blessing. One question, if your barrel seal or crankcase seal is leaking, would you see any oil or fuel residue? Thank you for your effort and congratulations for the quality of this video.

[@youraninee]

This is one of the best you tube videos I've seen, well presented and flow of topic... thank you

[@MrBillmechanic]

YOU ARE AN ABSOLUTELY BRILLIANT TEACHER. THANKYOU. WILL BE COMINGBACK TO LEARN FROM YOU. AMAZING!!!

[@williamdonnelly8783]

Just found this and I hope it will solve my problem which is bog down even though I have stripped and cleaned the carb used fresh fuel and correct mixture I still got bog down, so will go through with all I have learned from watching your video and hope it will cure the problem, thank you very much for a brilliant video.

[@stephencrouse6032]

Thank you for your exhaustive set of bog causes, which come down to fuel starvation for a variety of reasons, some of which were substitutions of additional air. The "revs" are better called throttle position and/or load. At idle throttle position, which is also least load, only the idle fuel and air passages are utilized. The air enters through the hole in the throttle plate plus any amount it is cracked open by the idle screw. At that setting the fuel enters only through the idle plus low speed mixture passages. As the throttle is opened to demand power for a load, it exposes the high speed mixture fuel passage that responds to the increased airflow.

[@scottgilkey4273]

Are you a teacher? I can listen to you teach all day . Very nice Thank you

[@coachsaltgrade8025]

This information video has been very well described. I learn more listening to these description than any other Thank you for your detailed description. WELL DONE !

[@edwardbredfield1680]

Clear, concise and to the point. Info put out like this makes me smile!

[@standaffern6595]

Excellent video, look forward to watching many more in your series. Been dealing with a bogging and dying scenario that was progressively getting worse over time. Vacuum checked the fuel line. No leak, purchased new fuel line anyhow, and filter. Removed carb to facilitate fuel line replacement. Detected some softness of fuel line when replacing but not extreme. Filter was not blocked as I could suck through it easily. Why I didn't do it with my vacuum pump , I still haven't determined. Anyhow I thought I would touch on soft fuel lines, as sometimes I have found them so soft and gummy that squeezing them together has caused the rubber to permanately bond together. Replaced fuel line and filter. Saw runs fine now, but not so sure it was fuel line. Possibly was leaking manifold gasket due to loose carb bolts, as it was in shop once for repairs and I had been blaming the saw for running crappy for several years since. , Because it was a Stihl I just assumed that was the reason. Now to figure out why my newish Stihl leaf blower bogs down and loses power. I would add to your check list the spark arrester, as that was the problem found to be at fault with my brand new line trimmer with less than 5 tanks of fuel run thru it. Maybe my 2 stroke problems will stop when will I learn to quit buying Stihls, and get quality equipment.

[@Okie-Tom]

Thank you very much for this video. This helps one know how the different components work together. I will be watching your other videos.

[@MrWitsco]

Thank's. Your fundamental principles, operation, service, and repair's through your video and experience helped. Explaining how each system works, and what could happen, clearly showed, by illustration, how the energy in fuel mixture, is converted into power. Powerful video.

[@zacharycerniga4884]

Excellent job explaining the concepts, maintaining big picture of the function of the engine throughout the video. Very helpful!

[@nocableoj1221]

I was watching the because of the likely similarities to the 2 stroke vespa I just got, and learned one of the problems that my moped was previously having. I will be much more diagnose and fix any two stroke bog down (and some other related issues) without having very little idea what I'm doing for hours. I've gained a new respect for carburetors because of all the thing that can be fixed with them.

[@nocableoj1221]

in the past I've grown to distrust anything that has a carburetor, thinking they are dirty and annoying to deal with, and this video makes them considerably less annoying.

[@TheRepairSpecialist]

Joel Bacon, I'm really pleased for your new found respect. Carburettors can be very tricky and challenging but also very rewarding indeed when you finally get one working great. Thank you for your comments, I really do appreciate them. 😊

[@thanxx]

this is excellent. hope you dont mind but ive been showing your vids to students. Thanks for taking the time to put these together.

[@GregWright00]

Me too :-)

[@Aled...]

Thank you for this. Explained a lot of the mysteries of carbs to me. Will be having another look at that strimmer tomorrow 👍

[@jonr2329]

Very helpful video. By far the best video I have seen yet! I love the way you incorporate the use of the drawings to clearly demonstrate what is happening and why. Thank you for sharing your knowledge with us, and in a way that is easy to understand.

[@TheRepairSpecialist]

Jon R, thank you so much for your very positive feedback. It's comments like yours that motivate me to continue making these videos. Thank you

[@djembeludovico5295]

thank you sir for your abundance of generosity in the time you spent providing such comprehensive and exceptionally well presented information for everyone

[@shauncraggs4447]

Hi Craig Thanks for the video by far the best on two stroke bogging down problems on the net great animation cheers Shaun

[@claudebrannen9160]

shaun craggs

[@SoyMagnumOpus]

thanks so much, I recently rebuilt my poulan saw carb and am having trouble. It dies when releasing the gas and takes constant on/off throttle engagement to keep it going, after a minute or two it goes full throttle without any bogging down. I'm adjusting the l and h screw and hope that'll solve my problems. Thanks again!

[@TheRepairSpecialist]

Bill Dauterive, brilliant, I hope you can sort it very soon. It sounds like it's lean of fuel and you are right to try the L and H screws first. Good luck 👍

[@spacecowboy98]

No just clean your spark arrester. Remove the screen from your muffler cinch it in a vise. Get a propane torch and heat the spark arrester screen till its red hot and wire brush the burnt carbon off. And reinstall. It should start up and run well.

[@jackwiley1480]

Excellent breakdown of how these things work. Your explanation and recommendations for diagnosis were spot on and instrumental in helping me get my Poulan leaf blower working properly. Kudos, my friend. Keep up the good work!

[@TheRepairSpecialist]

Wow, that is a very motivating comment. Thank you so much. I really do appreciate it. Craig

[@stevegriffith4842]

TheRepairSpecialist I have bog down on a echo chain saw, I bought a new carb.and still have bog down, have changed fuel lines, thumb bulb, cleaned spark arrest screen, guess my question is would a new carb need the hi -low jets adjusted or not. the carb I replaced was doing same as the new carb is doing

[@SNavarroA5]

Steve Griffith I have the same issue. My next step will be to check the exhaust which if plugged will prevent combustion gas from escaping properly chocking the engine.

[@japojo1958]

One more thing you might want to consider is what I first ran across yesterday. A clogged air filter. Never have seen that before yesterday but when I figured it out, the machine ran beautifully.

[@nicksr5248]

Brilliant presentation! A difficult and quite complex topic is made crystal clear with the minimum of techno-speak!

[@GmGarlo]

best tutorial yet!! also the length of the video was not long at all, just because how well you explained it , very articulate, 100 likes from me.

[@steindh]

Superb video! The best explanation of how those carbs work. Thank you!

[@grahamstreet6537]

This is quite brilliant. You are a natural educator.

[@1001awab]

very well spend hr to lern something very important when you own a 2cycle engine, thx a lot

[@StrangerInAStrange]

Very nicely done presentation. Now, I have to go watch the rest of your videos! Thank you for taking the time to make these.

[@johnheywood9826]

This helped me understand the 2-stroke carb to the point that I was able to diagnose my own issue. Thanks a million!

[@TheMickz2009]

you are a very clear and easy to understand teacher, thank you.

[@treesplease4053]

This series is massively helpful, Thanks so much

[@RobertoSantiagoRodriguez]

Great teaching, thanks so much! Have to understand how a machine is supposed to work before we can diagnose it.

[@TheRepairSpecialist]

Roberto Santiago Rodriguez. Brilliant I’m pleased it was of use to you. Thank you for your comment 😃

[@blackscotydog]

Thank you so much for the work you put into this video. It helped me fix my Husqvarna T 435 saw. Cheers from the USA.

[@neilwilliams2409]

Great video. Very informative and very well presented. Thanks for sharing your wealth of knowledge. 👌

[@stevenewton2210]

I have a poulan I have replace everything WA 229 carburetor. The chain saw will run full power all day long but after it stops you have to wait for next day to start. also it seams that I have to readjust mixture. after watching this video, I understand way more. I think my next steep is how to pressure the crank case.

[@andrewgibson8392]

Fantastic. How generous to share your expertise. Great diagrams!

[@TheTruthSeeker756]

Wow what a video! The small engine genius! Thank you Sir! So GENEROUS of you!

[@TheRepairSpecialist]

mbibace, thank you so much for your amazing feedback. I really do appreciate it

[@uuutooob9]

Brilliant video, and a lot of work. I now can tackle all sorts of issues with a solid base to work from. My Zama is coming apart and into the ultrasonic cleaner. I will prevail thanks to your generous efforts. Thank you, sir!

[@wildmanofborneo]

Fantastic explanation and model. I just always wonder why it's called a metering diaphragm and metering needle when it seems like it's really the low speed and high speed needles that are doing the metering.

[@carlosavila8155]

Thanks TheRepairSpecialist. I have a stihl FS220 trimmer and MS170 chainsaw which I've learned to use but never managed to sort out the problems when the machines cannot start or get bogged down. This video provides a step by step overview of what to look for if the engine bogs down and I am going to make use of the knowledge -- thanks very much. Would you also have a video if the engine doesn't want to start? Imagine and this is merely a "crash course" haha....thumbs UP!!!

[@TheRepairSpecialist]

Fantastic! thank you for your positive feedback. I will look into your request on the vid as well. I'm a little busy at the moment with another projects and will see if i can produce something after. I really appreciate your feedback.

[@mikedalakis5292]

Thank you for great educational material, beautifully explained through simple diagrams. I'll be looking at your other videos.