People like you are why everybody loves the biking community simple explanations and best accurate tips that actually help

This vid should be a reference point for everyone tuning a 2 stroke. Simplifies it all.

Best tutorial I've found so far. Thanks man!

This video on two strokes taught me more about tuning a 4 stroke than 7 other videos I watched on 4 strokes before this. Thanks you for differentiating the different types of screws and being specific instead of just throwing the same term around over and over

Dude I'm seriously surprised you're videos don't have more views they're super informative , I just picked up an 03 KX100 and your videos REALLY help man!

This is a nice, basic explanation of how throttle stop idle screw works and the idle air/pilot air screw relates to it. Thank God this guy did this

I must admit I adjusted the idle on my Yamaha yz125 by the cable, I did know it was not right to do it that way but I was too frightened to mess around with the screws on the carb in case I messed it up and couldn't put it right but after watching this video I'm no longer frightened and am going to do it the correct way tomorrow. Thank you for explaining it in a simple understandable way.

So easy to understand, never played around with carbys but this has helped so much with such a little adjustment. Thank you

Great information Rado. Wish I knew this 10 years ago, I adjusted my idle on 2006 Cr250 the wrong way! Had a flashback watching this video! Enjoying your vids.👍

Thank you for your input. My son's bike was running like crap. I got it running a little better but after watching your video I was able to get it running great. Thank you again

This video saved me time & money! I took my dirt bike to dealer to get inspected & after watching this I was able to do it myself

ABSOLUTELY BEST TUTORIAL YET FOR A NEWBY LIKE ME !!! THANK YOU FOR YOUR TIME AND THOUGHT INTO YOUR VIDEOS!!!

Thanks for explaining how to actually adjust carburetors instead of going into a 35 minute video explaining how to build one from scratch if ever everyone on the entire planet dies out.

Great video. I battled with idle on a 2021 kx85 for 2 weeks. This video helped. I turned in both idle and air screw and started the bike and continued to turn down the idle until the bike quit. Started again and turn ed air screw out until there was excellent throttle response.

Best tuning explanation I’ve heard to date. Well done!

I remember just 3 years ago when I got my first bike and watched your video and not knowing anything and now I repair bikes for people I know and friends

This has been already said, but this is the best 2 stroke jetting and idle video yet!

A truly solid foundation for new 2 stroke owners. THANK YOU!!

Thank You, I put a new carb on a 71, CT175 Yamaha that hasn't run in years.. (Haven't owned a 2 stroke in 30 years) Helped me out alot!

Very good information about this. I believe that the biggest problem is people will do this only when they have to. Not very often so it's forgetting how to. But then again, they don't have to with videos like this one. Thanks for sharing this

You are good men! Gretings from Poland!

I watched all kinds of confusing videos on this you are the only one that I learned something from and got my ATV back on the road Thanks.

Straight and to the point. Great explanation, my bike boged a bit and wouldn't idle on its own.now after tuning my bike like he did it runs great now.

Most helpful video I've found yet. definite thumbs up, thank you very much! got my first ever 2 stroke today (04 CR250) had this exact issue with the idle due to change in elevation and before I saw this vid I couldn't figure out what was going on with the carb. I had people literally try to tell me my bike had a bad crank seal lol.

Thank you, just rebuilt my sons kx 85, and you have helped me 100%! Much appreciated!

thank you! This video was super helpful. You helped me get my 1976 YZ80 running, it was jetted way off after getting a replacement eBay carb for it. now it idles great!

Thank you so much. I just got a 2022 ktm 150, and I’m getting back into riding. I knew right away the throttle response was off, but I couldn’t tell if it was fuel mix, jetting, etc. this helped!

I really like the way you covered throttle free play!!

Best video for air screw/idle tuning 👌

Used this video and got my 250sx to idle perfect today. So excited! Thanks for the videos Rado. 👍🏻

Quite a library of useful information you've put together. This video was EXACTLY what I was looking for. In your "I was wrong about the YZ125x," I mentioned that I was on the verge of getting my son a 2-stroke 85. When I bought it the bike would not idle. I felt confident that it was something simple, because it would start first kick (as long as you gave it a little throttle when kicking it over), but it would not idle. I didn't have a screw driver, so I tried with my fingers, but it was too tight. I bought it anyway. When I got it home, I set air screw out to the "starting point" of 1.5 turns out, and with adjustment of the idle screw, I achieved a pretty good idle. The only minor issue I have is that once it's idling nice and low, it kinda bogs a little when you blip the throttle. Once it revs, and you let go and re-blip the throttle it's pretty much perfect. But when you let it do the nice low idle again, and blip the throttle, you once again get that initial bog. This video has made me hopeful that if I play with the air screw, I might be able to get rid of the initial bog off of idle. Thanks.

Best explanation I've seen. Thank you. Explained and illustrated.

Awesome finally someone showing the top screw adjustment.

I refer back to this all the time. Simple, effective.

I've been riding bikes for years, as well as watching you tube for years and quite honestly this video if by far one of the best I have seen for adjusting pilot jets!!! I wish you all the best with your channel and the great straight to the point here is how its done attitude! Awesome!

Brooo! Thank you so much! I’ve got a 2021 YZ250. I took out out for my first ride and it wouldn’t hold idle. I have this same carb on the bike. I turned in the idle screw until it would stay running. It takes 4 to 8 kicks to get started and I’ve been fouling plugs like crazy. I had no idea that there was also an air screw. You’ve saved me a lot of heartache here. Thanks again, awesome video!

Best video ive found on this topic. Mine was way off, the bike wouldnt idle and bogged. Idles and rides sweet now!!

Best carb tuning vid yet ! Thanks for making it simple to understand

Had re-jet for warmer weather and used your video to set idle.. thank you I'm running crisp for my Hatfield McCoy riding !!

Excellent instructional video!! Thanks man!!

Thanks for this tutorial. Im going to try it with my Kawasaki Leo Star.

Thank you so much for this tip. Big fan of your channel and your work with Jay Clark!

Best channel ever about pitbikes

Thanks man , after watching your video I've fixed my bike , I came home for a short vacation , no time for mechanics , I had to make a temporary insurance and i'm glad that the bike is now running otherwise I would have lost the money of the insurance... anyway thanks again :D you have a new subscriber :D

Iv used this a few times now brilliant informative video, thankyou fella my bike is sounding so crisp.

Thanks for sharing, always a good thing to have more knowledge about our bikes. Usually when I tune my carb I turn the air screw all the way to the right make the gas richer, make the bike idle in 2-3 rpm and then I turn the air screw slowly to the left make it leaner until the engine idle at its highest rpm it could reach. When the idle rpm is not taking any higher when you turn the air screw counter clockwise thats when I know it's the right setting. Usually it takes 1.5-3 turns to the left to reach, more than that then I'd change the pilot jet size. After I get the air setting then I'll adjust the idle screw.

Thank you brother couldn’t figure thing cr85r out thank you

Excellent, I have just bought myself ktm 200 and it's bogging a little in low revs so gonna have a play tomorrow before I take her out. Subscribed

This is fantastic! No bullshit. Good video and audio quality. Close up shots. Thank you man

Absolutely the BEST and easiest to follow tutorial on this subject. Super glad you made this video my dude, subbed.

Thanks a million! this video helped me out a lot, i just bought a KTM Exc 125 if i'm not mistaken it is the same as the one you used on the video, but in any case my idle was too low and always have to pull the choke when i'm not riding or keep my hand on the throttle so this video helped me out a lot i quickly set my screws and now it idles like a dream! thanks DirtnIron keep up the good work!!

Thanks video! Your advice worked perfectly with the general start point on tuning the bike, i kicked it once and it came on idled perfectly! 👍👍👍 Thanks

Thanks rado. As usual a very useful and inofrmative video. My beta 250 came with the float level set too high. It was leaking gas from the overflow a lot! Other than that, it seemed to run fine. Once I adjusted the float height lower, the leaking gas went away but now it has a slight bog only when giving it sudden and lots of throttle off idle. Everywhere else, it runs very crisp. I am going to play with the air screw now to see if that fixes it.

This video was super useful, thanks Bro !

Thank you.. well explained. Now I understand better how it works

Thanks for another great video mate, greetings from Australia.

Still thanking you for this tutorial 🙏🏼 🙌🏼

Crazy clints carb class!!

Thank you so much, i was going crazy trying to adjust that screw on a 2 stroke, i was doing it the wrong way !!!!!!. Thanks for taking your time to explain the diference between that screw on a 2 stroke and a 4 stroke.

Very helpful man people like you are awesome

Well that's a great help sir,ive a rd thats not quite right on the left this should help thanks

Rado Rocks! I need to invite myself out to ride at his place some time. 😂

Great video! Thanks for your help!! Stay moto vated!!!!!!

RM 125 with no kick starter( to expensive lol) So jump starting it my driveway a few tiimes then jumping off with the screw driver ,with weird looks by the neibours :):) But eventually got it running sweet :) power valve 1 turn clockwise too wow.. didn't know 125's had bottom-end hahah thankyou mate. Another fan from nth qld Australia.

Great video and thank you for the clear explanation. My old DT175 had idle issues and I am at 1/2 turn out to get it to run close to correct. Could not figure out if I needed to go bigger or smaller on the idle jet. Your video explained it well and I used my jet drill set to open it up just a bit and not I'm 2 turns out and it runs perfect!

brilliant video!

6 years later, still helped me out!

Top Explanation!

Thank you man u have the best examples of how to do this I found it very helpful just started riding a 250sx and never had a two stroke always rode 4 stroke I love the ktm just all so new to me and even though it had great throttle response the way the rpms dropped just didn't sound right to me so I played with the throttle screw and air screw out on the trails before I watched this video and I'm glad I watched this later because after all the bike does sound healthy if you're is healthy then mine must be because it does sound the same lol so thank u for the vid

I have my bike jetted perfectly or close to, 158 48 + carb tuned almost perfect. She runs fine. Great video :)

good video really helpful just got my first 2 stroke

Great stuff! Helped me set the idle on my ktm 85.

Best video on the internet thanks brother really helpful info.

Thx so much!!! I just fixed my moped and it works so great with how you described it! :)

Best tutorial bro. I was doing some research and I know that’s not something very complicated, but u make it so easy to understand ❤️🙏🏻 I got I very nice 2002 ktm 125sx 2 stroke. I be honest that bike is very in mint condition I know I just have to work with this things. The engine only have a fresh 27hr, a tons of new parts. But it bogging in lows rpm like 1/4 throttle before the powerband and torque. I don’t know if is something with the air or fuel. I put v force 3 reed cause I like trails so I just want some smoothest throttle and more power at the acceleration. I know maybe with the v force 3 it don’t gonna run very fast cause it make the bike more like low and mid range, but my bike top speed are just like 47mph. I think I should do a lil tune wt the air-fuel screw to see if it grab a little more power and stop bogging at lows rpm cause the bike have a nice powerband but that little bogging or si leak give me anxietys.

Honestly, I find that tuning purely by ear will often lead to being in the ballpark, but not quite. I always like to run a tachometer - even a 5€ one will do - and zero out my settings. I will then pull out the air screw two and a half turns and three or four on the idle screw. That will usually get any bike going on a lumpy idle. Next I tune down - or up- the idle screw until I get something consistent at, lets say, 1500rpm and only then I start playing with the air screw. Screw it in a quarter turn and see what happens. If the idle goes up, then I'm in the right path. If the idle goes up, then I bring the idle screw out until I get a steady 1500rpm again. Wait a few seconds and give the air screw another quarter turn. If the idle goes down, then take the air screw in the opposite direction. Do not adjust the idle screw to compensate a low idle after a tweak on the air screw. Repeat until the best possible idle is achieved. From there, I will always screw out the air screw an 1/8 turn, just to keep things on the rich side and add some response. And that's about it. The over 3 turns, under 0.5 still apply, but this way you can be analytical in the process if you're just starting out and visualize the results of what you're doing. On four strokes I pretty much do the exact same thing. Tuning an idle on multiple cylinder carbs. Now that's a bit of a pickle :D

This guy should have more subs

Very helpful for this newbie! Thank you.

Perfect video thankyou very much my bike would not idle and this idea perfectly explained which screw in which direction does what and roughly where to set them bike idles perfectly now

Thank you so much man you fixed my bike

Best video to fix idling 2t bike

Yes! This was really helpfull! Thnx!

Good explanation

Best tutorial thanks brother appreciate it

Great information, will be checking the air screw on my old wr250z!

great vid! just what I needed to know

Great advice. Easy to understand and to do. Great tutorial.

Thanks, man. Good explanation. Helped me to understand....

Great information many thanks

Works perfectly I was afraid of set the carburator but it's easy

Awesome video mate! Very straight forward

Perfect video, thank you

thank you so much for all your educational videos, i have learned so much

Thank you so much now my bike is idling perfect

thanks worked perfectly

You are the best man!

Excellent tutorial

Excelent explained!!! Thank you. Greetings from argentina

Good video !! Thanks a lot.

Your a life saver! Thanks!