"Sparky's Workshop" Honda CBR125R Carburettor Removal HOW TO
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- เผยแพร่เมื่อ 6 ม.ค. 2017
- "Sparky's Workshop" Honda CBR125R Carb Removal HOW TO
This video is a how to remove the carb from a CBR125.
The reason for making it is my son's bike is running very poorly and keeps stalling plus will not tick over, so I have decided to strip the carb down and clean it.
As the problem was not solved in this video I am making another video to reveal the real cause of the trouble, so look out for CBR125 Keeps flooding video coming soon. • "Sparky's Workshop" CB... #sparkyrides - แนวปฏิบัติและการใช้ชีวิต
If you want to see a strip down of the carburettor video checkout this link th-cam.com/video/Nfe03lMlQZE/w-d-xo.html
Hi, I've got the same bike, I need to adjust the idle speed cos it's way too much - about 2000. Can u please tell me where is the screw located exactly, and if I have to remove the fairings?
Thank youuuu
I have this kind of motor and I never knew anything about it, I always wanted to learn but alone I just couldnt :(
My dad never had patience for me, thank you so muuch 🥺😊
Glad I could help 👍 ride safe.
thanks... i really needed this. having issues so this guide was helpful
White Knight glad to be of assistance, hope you solved you problem.
I did, but ended up encountering a bigger issue. I cant remember which way or how to fit the carb boot properly hehe Its not sealed properly on the carb to the engine letting air in the cylinder. Do you remember which way it should be? That would be such a big help. Thanks so much... love all your vids im a fan :D
White Knight hi it should only fit one way as there are lugs on the boot which locate it to the engine block, from memory the lug which sticks out fits near the vacuum tube.
Thanks so much! Fitted on perfectly now. I live on the Isle of Man. TT has just begun :D First time out on a bike this time of year. Its great.
White Knight Now I'm jealous, ride safe 😃
Thank you very much sir, very helpful
Thanks buddy! Great video!
Are you missing the coolant hoses on the front of carb?
Hi Sparkey, enjoyed the video. Please help: My fuel filter came off the pipe, and re-doing it, the other side popped off from wherever it was attached. I can't figure out where. It looks like the top end of the pipe goes through a rubber mounting, then to the top end of the carb. I've taken the fuel tank off, and I am now also unsure as to where the small, reddish bent pipe top left - you called it the vacuum - should go back on. Please advise. Rgds, M.
Marius Louw hi the vacuum pipe goes to the engine block, and the pipes from the fuel filter one goes to the petcock and the other to the carb. Hope this helps
Do I have to remove the tank? Or can I just place it on a chair with alle the wires connected? thank you.
great video
64Shakur hi you need to unplug the fuel gauge sender wire as in the vid, remove vacuum and petrol tubes, then gently pull on the side panels to unplug from the tank then you can lift the tank and remove the vent and overflow pipes for the tank, then pull the tank backwards and lift off. Hope this helps thanks for watching.
is the choke operating good on yours? My sons are har on cold starts, seems to be no difference with choke out. Cleaned the carb and valves are adjusted.
When my sons was playing up the choke just flooded the engine, but once I fitted the new fuel tap it was all fine.
Have you got a vid of putting pipes back on carb and air box
Hi unfortunately I don’t have a video of replacing the pipes and haven’t got the bike anymore sorry
Hi there, by 'water' do you mean coolant?
Ok, j'ai tout compris, je vais démonter le carburateur et emmener le chez mon mécano 👍
I need a bit of help, my CBR 125 is missing a few pipes, thanks to this video I have figured out the vent and drain pipes for the bottom of the fuel tank.
However the lower front left of the airbox has a barb I assume a pipe is supposed to go from there to somewhere and I am not sure where? does it go to somewhere on the engine?
Thanks!
Hi the pipes from the bottom of the tank are a breather and drain pipes but not having them should make no difference to the running of the bike. There should be a pipe from the air filter to the crankcase which is also a breather hose.
Hope this helps
@@BikeMates yeah I figured it out, previous owner had used one of the old fuel vent hoses and pushed it into the crank case breather hose and was venting the crank case breather under the bike.... Not sure why they decided to do this.
Sparky do you have a video on choke cable changing on the cbr 125.cant seem to find a vid anywhere
James Cunningham hi James sorry I don't have a video of this but I have change the choke cable and its quite a simple job. You will have to remove the tank as in this video and remove the choke from the carb as shown, then it's just a matter of removing the lock nut at the knob end and pull the old cable out and refit in reverse. Hope this helps
Thanks pal much appreciated.i thought that's how to do it but thought I'd ask a guy that knows how.great vids pal very usefull
Hey man thanks for the vid. Took carb out and cleaned it. Changed choke cable while I was there. I seen your other vid saying the oil smells of fuel. So is my oil so a new tap is on its way. However I noticed my fuel tank does not have the tubes (air and waste). I can't find them online to order and do I need them?
Thanks
leom mitchell glad I could help mate. As for the tubes you should be able to get something in a good car parts store. Ride safe 👍
@@BikeMates wow man after all this time didn't think you'd reply to an old video. Appreciate it. I think I found the Honda code for the part 950058061020. So does that mean I just need 2 of 8x610 tubes(not getting honda original too expensive) . And they connect to the tank and no where else at the other end just tuck them down the frame. In theory do I need them? Because the bike was running without them apparently. But unsure if that's why the bike stutters when going any faster then 20mph. Change gear stutters goes away until its time to change gear again. Thanks again
drive.google.com/folderview?id=1THjuynOYFSqgEIfysQ9IyHsUzctNAC6z
I think its number 23 on the diagram. However the fuel tank itself is 2 different sizes of holes. Confused now. Sorry to be a bother.
leom mitchell hi if the tubes go from beneath the tank and pass through the frame they’re the breather tubes which you can do without if you wish.
@@BikeMates appreciate the help.
Hey Sparky, me again - I have a carb related question.
Recently my choke cable came off from the handlebars. The adjustable locknut is still there, but it seems to be missing a piece that connects that to the underside of the plunger, that slots into the "c" shape holder. Anyway, after fiddling with it my bike seems to have changed behaviour. It slowly cuts out when idling with the choke down even when the engine is warm, the choke still works fine as intended, bringing the revs up and it doesn't stall like that.
Is it possible that you can push the choke cable too far down? I figure there is an adjustable locknut there for a reason and wonder if that's the issue I'm having.
**edit
I noticed I screwed the adjuster too far up, and the plunger wouldn't go further down. I backed off the adjuster and moved it down til what feels like the cable "bottoms out" and upped my idle screw. It seems to hold it's own. - So i suppose my question is still as above, is it possible to push the choke in the other direction? Like, what would happen if the choke cable was cut altogether? I don't know if you particularly need a choke to be used in 15c+ weather. Sorry for long reply.
Yew Tree as you said you shouldn’t need choke at 15c. As for the cable going to far in, I’m not sure that can happen. Have you altered the mixture screw at all?
@@BikeMatesHmm, well I noticed if I press the choke down as far as the cable could physically be pushed down there's a "springy" pushback effect and I think there's a spring inside the part where the choke cable sits in the carb, so I assume when the spring pushes back it'll set the cable at zero choke.
With that in mind, I then brought the idle screw to around 2,000 RPM when warmed to normal temp which is around 15-18 when warming, and it seems okay now. That said, I noticed if I rev it to above 6000 + it would settle at around 2100 rpm for atleast a second or two before setting down to the correct 2000 rpm. It sorta hangs briefly. I haven't touched the fuel / air mix, but I think it'll all be okay now.
What temp do you recommend using a choke at by the way? I've not found any definitive guides for the cbr on how best to use it.
Yew Tree I think if all the settings are correct then there should be no need for choke above 12 degrees, but that said a lot of people use the choke every time they start the engine. There are no hard and fast rules. Ride safe 👍
@@BikeMatesThought i replied to this but I forgot! Cheers sparky, I appreciate your advice. There's not much being posted about on these older cbrs anymore so you're bloody useful, cant complain really since carbs are going the way of the dodo bird but still!
Hi mate I plugged everything back in tried to turn the bike on and the engine fires and turns on for like a couple seconds then turns off and sometimes turning it on it makes like a screech then turns off.
Can i use a manual fuel tap and block the vaccuum ports by manifold?
Yes I don’t see any reason why that wouldn’t work, but I would get in the habit of switching the fuel tap off when not in use 👍
You should make a video about this carb cleaning, would be helpful as well:)
Artur hi I did think about making that video but if you search TH-cam there are loads of carb cleaning vids. That being said if I get time I might still make one. Thanks for watching 😃
Thanks for this vid! But carbs are different, aren't they? If you could advise me some video of analogue!
Artur yes carbs are different but in general you will only need to clean the float chamber and jets, if you can wait till the weekend I'll try and make one on the cbr carb basic clean.
Sparky Rides Okay! Thank you very much!
Artur hi just to let you know that I've made the video and in the process of editing at the moment will put on TH-cam tomorrow and hope it helps you.
Chavvy u don’t need to take the tank off fully or the side fairings it’s on a swivel for a reason just lift the tank on the other side
i did everything and assembled my bike and tried to started and it wont start...fuel filter is all the way empty and i dont know what is it can someone help....can that be if i connected petrol hose with vacum and vacum hose with petrol...can someone help pleasere
Does one house go near your carb
Can you remove the tank whilst it's full of petrol or does it need to be drained ? and is there any specific way to remove tubes attached to the carb or is it a simple pull / twist
Yew Tree yes you can remove the tank with fuel in as the petcock works on a vacuum from the engine. The tubes just pull off the carb but take a photo first so you know where they go.
@@BikeMates Legend! I noticed you pulled off the vacuum hose from the tap rather than the carb, does it mater which one you disconnect?
Yew Tree no you can disconnect from the carb or the tap, just make a note of which pipe goes where.
Can this be done on a skyjet 125 ? Please help my bike is acting up and no shops round can help
Daniella D'Amato I would imagine that your bike is very similar to the cbr125 but I've never worked on one so can't say for sure.
Hi mate quick question which way does pipes go from vacuum tap on tank top pipe and bottom pipe
James Finlayson hi as far as I remember the top pipe is the vac and the lower pipe is petrol, but I would check by putting a tube on the top pipe and suck it to see if petrol flows. Hope this helps
Sparky Rides many thanks will try this tomoro hopefully will work your videos are an amazing help for novices like myself
James Finlayson no problem mate glad to help 👍
Sparky Rides hi mate thanks for all your help I can tell you bike is running sweet again best it ever has.happy biker 😀😀
James Finlayson that’s good news mate 👍
Ride safe
By removing the water hoses from the carb do u mean the fuel lines
Aaron hall no the water hoses are lower on the carb, not all models have them.
Ride safe
Estupendo video si queréis partir la mitad de las tapas 😂😂😂😂
Hey, just took the carb off and cleaned it, but now I’m lost as to where the fuel tube is supposed to connect into the carburetor. Really need some help since the bike won’t start without it hehe. Cheers!
StoneCabin hi the fuel tube from the tank connects to the left hand side of the carb near the bottom.
If you’re unsure which is the fuel tube at the tank end just gently suck on one tube if petrol flows out the other tube then you will know.
@@BikeMates Is it at the top of the float bowl or the bottom? The tube doesn't reach to the bottom... So I would assume it's the orange-ish connector at the top of the float bowl
StoneCabin yes looks like a brass colour spout 👍
@@BikeMates Thanks, got it fitted there. Cheers!
Hi sparkyrides could I just ask the 2 pipes from the tap does the fuel pipe that goes to the carb go on the top of that our the bottom please
Also, do you know the size of the carb? I was thinking of buying one but all the dimensions are different, some say 26mm,28mm,30mm will fit, so hard to say whats real and not
Hi there were lots of changes to the carb over the years the bike was in production so not easy to find spare parts these days.
@@BikeMates yeah, i was afraid of that, seems like everything i buy next to impossible for parts, even my 05 450x is soon to be obsolete:(
Did this bog out at high speeds and you'd have to go down a gear to get the Power back as I've got the same bike as that
ImLegitclan _ hi no it wouldn't even rev properly, because it was getting to much fuel and flooding the engine (filling the sump with petrol.
Bogging down sounds like petrol starvation or lack of engine oil.
Hey i know this is an old comment but im having issues as well.
trying to figure out whats going on when i accelerate it seems to like jerk and not accelerate its at about 7k rpm in any gear and i need to shift up earlier then normal in order to go any faster did you have this issue?
HELP .. i have a black tube hanging down on left side. it seems to be coming from top of carb, ive no idea what it is or where it goes ? .. i took bike for service and it came back like that .. and also bike is really down on power. ?
cyberjack hi how big is the tube? As big as a pencil or bigger?
bigger.. think its one next to fuel pipe, i assumed it was the Vac line, but i lifted tank and couldn't see anywhere it could go.. (and its a 2006, carb) i'll add a image url . in min ..
ibb.co/dQ3RCS
cyberjack hi that looks like a breather pipe from the air box which should be routed through the frame with the other tubes. What's the yellow pipe?
Yellow pipe is the airbox drain tube (condensation)
Thanks a bunch for this video! Helped me out a lot. However. I made the mistake of not documenting which hose goes to where. Does anyone here have a manual or some pics to explain? Thanks a lot!
Same as well here. Did you manage to assemble it? Or do you have any picture/vids?
i cant seem to understand why the cooling lines goes thru the carb.
Yolos Games hi it was to stop the fuel vapour freezing in colder countries.
oh because im installing a bigger carb ( pwk 28 ) and theres no place to put the cooling lines.
Yolos Games no problem just get a small tube and join them together.
didnt think of that , thanks !
How many mm is the original card.. Sorry for my english is not so good! Thanks
What should i do if my CBR is not reving up?
Marián Mician hi what are the symptoms?
@@BikeMates I quickly rotate gas handle to rev it and i won't rev for a second and then it revs. Maybe it's only lean becouse i started it month ago and it was great. Month ago was 20 degrees outside maybe higher, now it's like 8 degrees. Not fahrenheit but the other ones i forgot the name sorry.
Marián Mician have you tried letting the engine running for 10 minutes then rev it?
@@BikeMates I only let it warm up for 2 minutes and then rev it. I've already solve it. It was lean how i was expecting.
Hey so i bought this carb, but it does not have water hoses at the bottom. Where does these water hoses go? Do i redo the line so it skips the carb? What is the function for those hoses? www.honda-cbr-125.com/honda_cbr_125_special_keihin_pwk_29_racing_carburetor_bowden_cable_set.php
HIya, on the fuel tank when you remove it we cannot see which pipe comes out of where on the petcock on the bottom of the tank www.ebay.co.uk/p/13030970239 which pipe goes where there are 2 possible pipes , one of them is yellow and the other is black on my bike . thank you
3D Ag3nt hi the pipe that goes to the engine block is the vacuum tube and that should be connected to the vacuum of the Petcock the other pipe goes to the carb inlet and should be connected to the fuel pipe on the petcock. You can test which is which on the petcock by gently sucking on one of the outlets on the petcock till fuel flows from the other.
@@BikeMates thank you so much you are a star . You still have the CBR ?
3D Ag3nt that’s no problem 👍 no the CBR was my sons and he has since passed his test and moved onto a bigger bike. Ride safe
@@BikeMates the good news is. Carb stripped cleaned reinstalled fresh fuel and it started first time the bad news is that the fuel overflow peed fuel on the floor, am i right in thinking this is the float bowl height? I'm not sure how to adjust the float bowl on this carb there is no washer to move up and down like on most carbs , any ideas please , sorry to keep on , just want it to stop overflowing fuel . Thanks again
3D Ag3nt yes I had the same problem, and you’re right there is no adjustment. I managed to find one on eBay and replaced the needle valve at the same time.