Probably one of the most accurate and comprehensive videos I've seen on this topic. Great video man, appreciate it.
Outstanding video. Might be the best mechanic type I've ever seen. Great work!
This was explained beautifully! Thank you.
I just wanted to say I appreciate your time great knowledge on the carburetor wasn't quite sure what all the screws were but now I understand I do appreciate it very much great video
Absolutely enjoyed your video man your speed with the key info input with the cause /effect explanations and not all the unnecessary talk just all directly to the point is awesome and honestly didn't feel that waste of my time/ waste of my life feeling that all the rest usually give.. I cant appreciate this video anymore I wish all of them were like this. Good stuff my man good stuff... Dead serious I don't even comment on UA-cam or videos like this but felt compelled to go and say this exact sentence this very moment. Thanks man
I only try to make the best and most important information to go into the videos! Im glad they helped you out! Thanks for watching and supporting the channel!
Didn't miss a thing. Great tutorial.
Great vid, and what an invention the carb is! The mechanic minded genius who came up with it 🤯
a simple yet very informative video....a lot of same content but this is where i stuck from intro til end... 👍👍👍🔥🔥
..shoutout to trail riders of tagum city, philippines
Thank you so much for your help. Man it feels good to ride again. Thank you again
My bike had bigger jets in it but I kept fouling plugs so we put it to factory sizes and now it runs good but now it takes like 20 kicks to start it and it doesn’t seem to have as much torque
Thank you for making this video! You should do a full breakdown of these bikes. Your really good at it 🙏🏼✌🏼
I'll need to rewatch this once or twice once I get my bike, but this for sure is the video I need. Great job.
@@AaronsEnduro oh, quick questions.
What's the difference between say, a 28mm and a 30mm carb?
Thanks for the well explained explanations. Very informative. Good video in a small age.
This can’t be free!! Thank you, so informative. Really just filled in the gaps of my knowledge with this in depth video.
250cc buggy is running pretty rough, when throttle gets to about 40-50% starts to choke and sputter as if the tank is Empty. I need to come off the accelerator to prevent stall. Will have a go tinkering with the needle position or the mixture screw at the bottom and see if I can fix this.
Id check your spark plug to see what colour the plug tip is to help indicate if its leaning out or bogging out from being too rich. Then you can adjust the fuel screw accordingly! Let me know how it goes!!
Aaron - I just replaced a PZ27 carb on my RPS Viper because it sat up for more than a year and the float needle was stuck preventing fuel to empty into the carb. Pull the original carb off thinking I could service it but notice the bolts heads were removed. what the heck? I tried to drill out but messed one of them up so I order a new carb. Put on the bike and when it starts it races wide open on the choke. What is happening? If I open the choke it spudders and has no power.
Glad i found this video I'm a total noob my pit bike is bogging in 4th gear at higher throttle think it might be something to do with the carburettor. This video was helpful. Want to learn more before messing with it.
Checking your spark plug will help you with knowing if its running lean or rich. Black plug =rich
White = lean
I have a 2022 cfr250 and when i ride slowly in 1gear it popping what screw do u need to turn?
pls, help me! is it okay if my VM22 only gets settled in about 5 rounds? screw head (mixture air/fuel) sticks way out of its little house/hole
I just got a new carb and when I have the choke off it idles fine but trys to shut off when I give it more than a little bit of gas but when I have the choke on it trys to shut off when I'm not giving it gas
Great job I could see you becoming a big UA-cam channel if you keep the enthusiasm
Hey! your videos have been super helpful, however I still have questions. I took the throttle cable out of the valve, and now I can't seem to figure out how it goes back together. I've tried looking it up but all the videos I have found have slightly different components than the ones I have. but in this video I'm seeing all the identical parts to mine! thanks!
Hey if you’re looking for 1 on 1 guidance you should check this out :
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bro great video absolutely explained everything..only thing missed was how to know if bike is lean or rich
Check the color on the spark plug! White is leaning out and black is too rich! It should look like a golden roasted marshmallow
Perfect, dude. I'm dealing with a 2019 Apollo Enduro. Changed the carb but they didn't give me a Japanese replacement! But now I know what to do. Muchisimas, bro.
Yeah, hey I just went out and looked and it's easy to get to! You really helped me out because I know little about mechanics :-)
@@AaronsEnduro Hey Aaron, thanks to you I was able to bump up the idle and enrich the mixture. The backfire went almost completely away but it still sputters on acceleration. mostly in the mid RPM's. The manual says it's supposed to use 93 octane gas. It's 12hp/7000rpm, 17.5 ftlbs torque at 5500rpm and is supposed to idle at 1550rpm at higher altitudes, which is where I am (!) No pun intended :-) And an over head cam. Is that kind of cam normal for a bike like this? Or nothing special? What am I dealing with here? 9.6 :1 compression ratio and we measured the compression which was at least 150psi.
The emulsion tube that holds the main jet does need cleaned when cleaning your carb. It has air passages in it that can clog.
There’s no way u responded to everyone Dam crazy you a nice guy I learned hella shit all ur videos are great just found you subbed up
When you switch from stock air box to cone filter.. the pilot jet, and main jet need to be swapped for bigger sizes and the need washer to be a little lower right?
Are you referring to a bike that has a sealed air box? I wouldnt get rid of an air box for a cone filter
Hey man, I have an 02 yz426 that has a hot start.the bike only starts with hot start engaged but dies immediately after letting it out. So I believe too much gas is getting in the carb? What do you think needs adjusting? Thanks !
This is what i found online:
“The carb is the single most common source of starting problems with the older 400's and 426's. You have to get the idle jetted and trimmed out almost perfectly in order to have them hot start reliably. The bike should only need the hot start for restarting immediately after it's stalled while running. If it's been sitting for 5 or 10, it should restart without it. An even slightly rich idle will make the bike difficult to restart when hot”
How valid is it , not sure. But something to go off of. Im not too familiar with the 426 setup in particular
Hi Sir, I have a 1976 Suzuki TS 185 which I’ve owned from new and just completed a full motorcycle refurbishment and now I’m trying to get the motor to run right. The motor starts up fine using the choke (UK 1000 feet above Sea level) and runs more or less perfectly until around 4000 rpm and then it starts to misfire and if I try to open the throttle more, then this results in total engine cut out until I close the throttle again. I believe that the issue may be related to the needle position (not sure where it is at the moment) and I assume that I may be too lean and need to raise the needle but your knowledge and experience here would be much appreciated ! Would you kindly give me some much appreciated information please ? Thank you for your excellent video ! Please keep it up.
Id start with pulling the spark plug to see what colour the tip is to give you a better indication if it is lean or rich. Then start to move the needle clip position in the direction needed
Nice video, the piece you left in the carb could get contamination and cause a bunch of problems. Doesn't hurt to remove and make sure all holes are clean. Got to airiate that gas!
How do I know If I should change my carb? I just got a 140cc Apollo open RXF.
1. Its a fact you can tune an aftermarket carb, the stock ones arent bolted shut and they use rivets to keep you from dissembling it.
2. If you notice any bogging or hesitation when on throttle
Just cleaned the carb because it
wouldn't start up. It starts up now but it's very loud and rough. I haven't tried going into gear 1-4, but should I? Just to see if it's the same for the main jet or will it blow
the engine or something. I have a semi automatic so it
won't actually move without use of the throttle. Also,
I'm aware I have to go back into the carb, how much do
I tweak the pilot jet and main jet? One more thing, the
carb had gas in it and I had to hold the floats up to
make sure the gas didn't leak. I turned the fuel off as well. Why was it leaking out and how can I get it to stop?
Great vid. Really learned all I needed to know from one video which doesn’t happen very often. Thanks for the information.
Glad it was of help to you! Thanks for watching! If you ever got questions feel free to ask our community here! :)
@@AaronsEnduro I’ve been having trouble with my bike constantly leaking fuel out of the overflow hose and even leaking from the fuel on and off switch. I wonder if I’ve got a stuck valve. The bike seems like it’s getting way to much fuel through the carburetor to where it bogs down when I ride. And sputters sometimes
The fuel coming out the over flow line is a float issue.
As for the fuel leaking from the fuel on/off, points to a failing seal inside the petcock valve (the on off switch) replacements are cheap.
Your bogging issue could be caused because your flooding the carb (because of your float issue)
@@AaronsEnduro awesome man I appreciate the feedback, I’m gonna try and break it down and see if I can get it right, thanks.
Id start with checking your float and float valve arent sticking/incorrectly set
You can test the floats height by blowing air into the fuel line ( i used my mouth) and manually actuate the float with your hand. If its “flat”/horizontal and you can still blow air through the line, you need to slightly adjust your hanger. (Meaning its still adding more and more fuel into the carb even tho its full)
Helps out SM! I have my ssr 140 and it has the mukuni vm26 carb and after about 9 months when I try to kick her over and I wap the throttle back it bogs but if I SLOWLY give it throttle she’ll start and breath and once she’s warm she’ll idle fine , any tips on how to get back to normal 😩
I turned up my idle screw and that helped out but haven’t adjust needle clip or fuel screw or jet but after watching this I’m gonna try to the best of my ability’s ! 😅
Id say itd be your needle clip position, just odd that it all of sudden happen it’s happening. Did the bike sit for 9 months straight? If so first id start with just cleaning the carb out (especially if you’re fuel that contains ethanol)
Clear story, 👍 thanks
Wow! Thank you so much friend! If you ever need help just give me a shout! Very much appreciated the donation!
@@AaronsEnduro Good chance that I will ask you're help about jetting my YX160 cc. But for now a small sign of appreciation 🙏👍
My carb is a Mikuni knock off from Amazon.. I have a coolster 125, it doesn’t have the butterfly thing on the clutch, is that okay?
What butterfly thing on the clutch?
The only butterfly valve is in the carb. If you’re carb doesnt have a butterfly valve its a junkkkk replica
Why do I feel air coming out of my carb when I’m trying to start my bike, as if the intake valve is stuck open
Can you make another one where you put in the accelerater in the carb
It just slides in. Only goes in one way. If it’s backwards the throttle gets stuck
Why does mine die after I give it throttle
Can you do a video on how to hook up the throttle cable into the spring loaded carburetor?
Put the cable through thr carb cap, put the spring over the cable, Compress the spring over the cable, then feed the throttle cable tip into the carb slide. Its a little tricky holding the spring all the way compressed against the carb cap
Hey man, the carb on my bike was missing the plastic thing at 1:45, what does that do? would that be the reason my bike is having a hard time to idle? thanks!
Arron what adjustment is needed if my 4 stroke will only idol with the choke closed.
Choke closed = richening it up bu cutting off air flow. Indicates that without choke its running lean
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Hey man I got a question about how much riding you get in off one tank?
I can go for a day of riding and not have to think about it ever. By the time were done with the day its got a 1/8-1/4 tank left. Lets say 6-8 hours of riding for me a tank
I changed my throttle Cable now it idles at full throttle. I think it has something to do with the spring and needle
I just rebuilt a crf 80f carb and checked the float bowl height, the jets are good and clean, it idles fine... but when I brap the throttle it boggs and then the rpms take too much time to come back down... why is this?
If you think its bogging you should check your spark plug color for fuel mixture. As for the revs staying high, didnyou change your clip position? And or possibly the throttle slide could be sticking in the top of the carb
Okay on the throttle needle raising the little something on the throttle needle higher what will happen?
Will reduce the amount of gas flowing as you open the throttle, aka making it slightly leaner at partial throttle
I'm getting rev hang after releasing the throttle. Is this related to the carb? What adjustments can correct it? Thx!
Great job on this! Concise and thorough, and very helpful. How does the fuel screw actually adjust the mixture? Does it effect the mixture at all the jets? How is adjusting the fuel screw different from changing all the jets and raising or lowering the needle?
The fuel screw is a tapered screw that lets more or less fuel pass through the carb body from the float bowl. The fuel screw is like controlling the fuel flow. While the pilot and main jet are are nozzle’s the fuel flows out of.
Think of the fuel screw like the knob of your your garden hose where you turn on or off the water.
And the jets are the nozzle on the end of the garden hose controlling how much comes out of the hose
Raising or lowering the needle adjusts the fuel by how much throttle you apply ( you can think of this like how open you have the garden hose nozzle )
@@AaronsEnduro oh, so the fuel screw only really controls how quickly the bowl fills, right?
What should I do if the throttle isn't doing anything
You probably have the throttle cable incorrectly put in the throttle slide or the throttle slide is put in backwards 180*
Does anyone know a fix? My bike idles perfectly fine i can rev it up also but when I put it in gear and try and go anywhere it bogs out
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Hello and thank you for your very informative video.
Issue #1
@2:45 you point to the brass tube where the main jet is located and clearly state that you don't need to remove this or the air/fuel mixture screw.
Are you serious young man ?
I just cleaned one of these carbs last night and I can tell you that little tube has 12 tiny micro holes located along the throat of that tube . . . if you think of a clock analogy and looking straight down the tube's length, there are 2 holes straight up at 12 O'clock, 4 holes at 3, 2 holes at 6 and another 4 holes at 9 O'clock.
These tiny micro holes get clogged too.
When you disassemble a carburetor you completely disassemble the entire thing. You never just do part of it.
Reason stands, if there's wax/tarnish in the bowl or anywhere else in the carb like that green stuff growing in your bowl, then it's in all of the passages, pin holes, crooks, and corners of the entire assembly.
What you are stating is to . . . only do half of the job.
Also, when you clean a carb, it's best to soak it, as well as all of it's parts in an ultra sonic cleaner with the proper solution in it and a working heater.
Why would you not remove and clean your fuel screw ?
See sentence above regarding all that green crud inside your carburetor.
How do we know where it's set and how do we reset it after we've disassembled and properly cleaned everything.
You didn't include that.
Slow down you're presentation a bit, you're talking too fast. Clarity and understanding are more important than whipping it out faster than Speedy Gonzales.
Other than that, great video young sir. Keep it up, and maybe edit this video to include those tiny bits of information for setting that carb before you reassemble it.
Just my two cents.
This was one of my “first videos” while i was sharing as i was learning. Thanks for the feedback and happy riding 🤙🏼
We need more how to videos brother!!
@AaronsEnduro do videos on different type of carbs....like XR125L carb? Iknow carbs are similar but it'll give me and others more confidence
Hey do i need that lil clip that is attached to the float valve in order to work fine
@@AaronsEnduro you know when you pulled the float out the valve comes with it hanging on the float
@@AaronsEnduro only reason why i ask is because when i went to clean the carb it didnt have that clip on the valve but the bike was running fine before i cleaned the carb
My problem is i cleaned the carb on my sons 01 xr200r and now when it starts is idling high and even if i turn the idle screw in it revs even higher and if i turn it out it doesnt really change when i sprayed starting fluid while bike is on to check for vacuum leaks none but if i spray into the airbox the bike idles down im lost lol
My assumption would be you put the throttle slide in 180 degrees wrong (the tube that goes in the top of the carb which the throttle cable is attached too.
@@AaronsEnduro another thing is too it revs high when opening choke not while choke is closed when fist starting the bike once i open it revs high
How do I put the cable back on the throttle pin
Mines seems to have nothing on the end of the throttle wire to hold
@@goodsandservices4119 Watch this at 4:54 ua-cam.com/video/H6qr7R7WBLU/v-deo.html
hey I have this carb on my bike and i’ve cleaned the whole thing out plenty of times and it still bogs like crazy but when i put the stock one on it doesn’t bog like that do you have any tips?
@@AaronsEnduro yeah i had it running good then i came home for the night then went to go back out the next day and it was super boggy
Man im friends with some big youtubers for foxbodys you explain and talk like you have been doing this for years you are doing a great job man your going to blow up i just found your channel and subbed you ever think of buying a SUR RON X e bikes up and coming and great for content
Well i aint gonna lie, ive been trying youtube for 11 years now! 😂 this channel has been my successful one (having started it in 2017 but starting to take it seriously in 2020! Thanks for the support and watching the videos! I always open to new bikes and ideas! Just $ that is limiting me!
I actually had a class 1 Kodiak IE E-bike and man it was a lot of fun! But i had sold it to get into dirtbiking at the start of 2020!
Hek yea man thats good i hope it really takes off so money and sponsors start coming in for you and yea im looking at getting the sur ron x for trail riding doing the 72v swap on it after i buy these 2 rfz pit bikes next month
That’s exciting! You should make a video on your sur ron! Would love to see it!!
(If you end up ordering those RFZ’s online you can support the channel at no cost to you by using my links to buy an RFZ!)
Apollo RFZ x15 125cc Small Wheel: amzn.to/3e3Q0BI
Apollo RFZ x18 125cc BIG WHEEL:amzn.to/3eatOrp
(backup link)
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I have a mid rev problem, bike starts and runs, on low revs accelerates fine, on full revs, accelerates fine. When sitting steady at half revs,it stutters.I stripped and cleaned the carb using your vid, still the same, any ideas? Thanks in advance
I tried adjusting it with the mixture screw but i didnt realise the part that the cable attached at the top had adjustment so I'll check that and adjust it one groove if it has adjustment on it, cheers
@@stevieforbes2160 id try a little less fuel in your mixture, then report back.
Humans are neat. It's complex and simple at the same time.
So I bought a bike that hadn’t ran in a year, I cleaned the carb and then it started and ran for a day. The next day the bike wasn’t starting so I thought I’d order a new carburetor. I put the new carburetor and new fuel into the tank and the bike still won’t start. Then I proceeded to change the spark plug and it still won’t start. The bike has compression and everything is changed but the bike doesn’t want to start. Are there any other options?
If you’re looking for 1 on 1 guidance on your bike you should check this out! ua-cam.com/channels/cviyKZ2Vf3IHFliwebzODA.htmljoin
stoke Main jet size olz
Hi what is that screw that is exposed under the carb
Not the one to let fuel out
@@AaronsEnduro I found out boss it's the fuel screww thanks
I'll turn it
How much turns out tho
It's closed like like turned tight
Back it out 1.5-2 turns out. Get the engine running and listen to where its 80% revved up.
Unscrew it until you dont hear it change idle revs anymore then go back in a 1/4 turn
@@AaronsEnduro okay
Because my bike is starting but it don't rev up do you think it is because my fuel screw was tight in?
@@AaronsEnduro just watched whole video finished
Liked and subscribed
You are a legend
I'll let you know if it works
I have a 2018 crf 125 f and I can’t adjust the float level because it has a set float level anyways I cleaned the whole carb and airfilter and it spits and spudders when a I give it full throttle I need help
How fix clutch slips?
@@AaronsEnduro where u showing how fix clucht ? My problem is hard to find neutral and shifting from 2 to 3 gears got neautral
you say that because that bolt needs to be adjusted because when im drive in 3 gear just slips to neutral
@@AaronsEnduro thats the point all teeht are fine then i get that neutral slip i shift up again to 3 gear its runs fine no slips till i shift down
Bike only running good with choke open?
@@AaronsEnduro with choke closed when you give full throttle it wants to stall.
I mean yea. Thats what normally happens. Choke closed means your richening it way up to help start a cold engine
I cant get that w shaped spring spacer clip back into my throttle assembly in the carb, you never explained how it goes in.
@@AaronsEnduro is it supposed to be pressed into it? Cause It sounded like it was scratching the walls pretty bad
It should just fall inside the throttle slide. If it doesnt its been messed up when u removed it. Either way i really dont think its that important. It doesn’t affect the needle or spring position. Just jam it down in there
My 125cc pit bike keeps dieing when chokes off
Well when you have a choke turned on, it’s reducing air flow, resulting in a richer mixture. If you open the choke (aka “off”) your leaning the mixture by re introducing the air flow. If the bikes stalling out when you open the butterfly valve (the choke) that makes me thing you’re mixture is too lean. Meaning you should have to richen up the fuel mixture! Hope that helps!
@@AaronsEnduro I think I have the same problem. Choke off meaning all the way up or all the way down? And what needs to be done to richen the mixture? thanks!
8:30 ......how often do you ride at full throttle? Honda C90 Cub. Hold my beer 🍺
😆 My carby is being a pain in the Ass, You may have to come over and see what im doing wrong, I'll shout you some cold ones
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I have a problem with the carburetor adjustment, the candle is clean all the time, the air adjustment does not help, the dose on the needle does not help either, the nozzles are clean, engine 4t kawasaki klf250
@@AaronsEnduro I can't adjust the carburetor on a kawasaki klf 250.
The candle should be the color of coffee with milk, mine is clean, I have the wrong mix
So if my bike starts bogging out at full throttle, i should make my needle richer? Because adjusting the fuel mixture when I bog at full throttle will just make all throttle positions richer but adjusting my needle will more specifically effect full throttle?
@@AaronsEnduro so my carb had a thinner needle in it but I got a rebuild kit with a slightly thicker slide needle should I switch back to the thinner needle?
@@AaronsEnduro I didn't see a clip I just figured the thinner needle would change the flow one way and the thicker would change it the other way haha
Thanks!
Appreciate you brother!!!