Two-Stroke Scooter / ATV Carburetor Settings And Adjustments 3of4 : Needle Clip
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- Опубликовано: 1 июн 2012
- Part 3 of a 4 part video detailing all of the basic settings and adjustments of the carburetors found on Minarelli / Jog / 1E40QMB powered 50-90cc scooters and youth ATVs. Part 3 shows how to change needle clip settings to adjust part throttle mixture. Please like the video if you found it to be helpful.
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this dude saved my life lmaooo the clip that goes over the needle was a bit different than the other videos i watched untill i came across this one 12 yrs later life saver
Best carb tutorial I've ever seen , lots of respect 👍🏼
Thanks!
@quadruple treble 1888 It may or may not improve performance. That depends on the demands of the engine. It will allow more fuel, though the effect at full throttle is not usually much and that's where most people are looking when they are trying to find max power.
Excellent quality videos, thanks for the time and effort you put into making sure people can see what's going on, and accelerating through slow parts for efficiency. Excellent explanations as well!
Wow, had no clue it was a 4 part series. All made sense no matter in what order you watch
New to mopeds, your detailed explanation and delivery is extremely helpful keep up the good work. Thanks
Best walkthrough, thanks. Cleaning out carbs in a 1969 Triumph. Basically the same.
Thanks! Good luck with your carbs.
BRO!!! At the 2:40 mark you literally saved me!!! I cleaned the carburetor so thoroughly put everything back together and was having a sputtering issue because the needle had play to it because I didn't install that weird looking clip properly against it. You saved me bro I was so confused at how it was positioned and now I see thanks to you
Two years later this is still helpful 🙃
Me too!
Excellent slow intuitive video. I'm impressed.
Thanks for the video, great info on carburetor repair, needle adjustment and settings ,very helpful
☆☆☆☆☆☆☆☆☆☆☆☆
Thanks. Was a big help to me getting an old Honda bike running.
Brilliant all makes sense and I'm happy to give it a go now!
Explained better than any of the 50 videos I watched!!! I love the opening explanation. This is exactly what I was looking for it's very easy to watch and listen to. New subscriber
You did a good job with this video, Thanks!!
This helped me out thanks mate from down here in Adelaide Australia!
Nicely explained, well done man!
Some of the best info out there. Thank you! I got my bike together cause of this video.
Thanks too bring back my midschool knowledge!!!
It changes the mixture from about 1/4-3/4 throttle most noticeably. Raising adds more fuel, lowering cuts back fuel delivery. It can affect more or less throttle than that, but it's most noticeable in that range.
really excellent tutorial for us noobs. thanks a lot man.
Big thanks to you. Throttle jammed on my grass cutting machine problem solved!.
Best tutorial on the internet! You saved my Derbi. Thanks alot :P
+FPS_SAVANT what did u save exactly?
Peachy ❆ It was running poorly :/
FPS_SAVANT mine's leaking abit, doing weird shit, i think il just buy a new one ehh :(
Best tutorial on the internet Thank you very much.
Thanks!
Excellent tutorial
Thank you!
I'm liker number 1,000.
Thank you for this video.
I like your voice and the tone of it and thank you for al the details.
Awesome great explanation of how to properly adjust the needle and how it works , thanks…
Thank you man ...simple and clear
Your toturial made my week.
Glad to hear it!
Just showing that clip saved me, my whole set up flew too pieces and I couldn’t work out where that clip came from. Thanks 👍🏽
I really appreciate this video
Thank you for this! As a complete noob with these kind of things I took my carb apart today after getting a 2006 moped that ran bad and died after running it for a while and especially going on fourth gear I thought I'd give the carb a cleaning, but when putting the throttle together and thinking I had it put together right and then starting it it reved like crazy at full exhaust and I turned it off immediatently, I should have watched this first as it perhaps had to do with what you mention in the end with the wire, I tried turning the throttle grip with the spring and needle unscrewed from the carb and it goes back into position when letting go of the grip but once I put it down in the carb and screw the top on and try to turn the grip it wont return to position, hmm I need to try again tomorrow and do all the steps and hopefully I will get it back again.
Finally, was looking for a video to adjust my clip, its running way too rich on cruising RPM and stutters like hell but couldnt find a solid video that showed me step by step. Bless ya bru!
Very good presentation ----- Thank you
THANK YOU!!! My spring was stuck to/pulled out the clip that holds the needle down, when taking it apart. I couldn't figure out how to correctly reassemble it, spent hours on U Tube looking for a video that covered it, without any luck. Tonight, while watching boating mishaps, your video came up as a pop-up at the end of what I was watching. I couldn't believe my luck!!! Again, THANK YOU very much, your video was very informative and has saved my ass
Glad it helped!
Excellent demonstration setting a gd example mechanically English is clear recommended 👌
Actually only u r show its properly than others..👍👍👍
Thanks a lot....best tutorial.....🖐👍
Thanks for helping me see how I messed my carb up!
Great video man
awesome videos man!!!!!!!!!!!
Awesome video thanks
Excellent video
Good stuff 👍
It just helped me, When i needed it Thank you!
Qugfd15og
.
tihgrve
Thanks, needed help with Yamaha 250 2 wheeler. Great video, the jet needle came loose from the throttle valve.
@90GTVert I fixed it the only thing is that the ramp on the slide goes on the idle side not the full gap side ... Fixed...
You are a G much respect!
Really good detail and step by step. I have a 2005 kymco people scooter that sat for a year and a half. I changed the fuel out and did a carb clean out but still the bike just idles. It bogs down the minute I try to get moving. Any suggestions?
90VERT is full of knowledge. The details are amazing and vry rarely does he leave small details out. Great vids, keep it up!!
Nelson
Thanks!
Dude ur the best tnx
Thank you sir me and my bug eye Truly appreciate the knowledge
cheers mate. better than a manual.
Your the best
I'll take a look.
Hi can you expain what the needle sets do? I have been told I need to buy a set as I have a pod air filter.
Thanks.
Great video !!
Let me ask you: I got a 50 cc Honda DIO and it's stalling when I stop. It takes ages to reach 30 km/h. Almost no power ! After 30's it goes well, I just got no power until 30 km/h.
Do you have any tips for that ? Thank you so much !
Is the middle on 5 slot 2t stock position on Vespa LX
ok thx, u help me a lot :D
Thank youuuu
Very nicely done. I will start viewing more of your videos. Happy New Year!
\
First thing I need is a set of tools and I'll be away very useful video
i noticed that u had a casket on your throttle is this nesarsary for a tight fit as mine as none.and it will not lie flat when the screw is tightend. thus makeing my exsellerating from 0 very slugish. thanks
Great!!! Thanx!
great video! i love all your tutorials... i think i have a problem : yamaha neo's 2002, i turn it all in mixure and needle is on up to first (i have 5), and the scuter run bether whit this settings.... i have done difrent settings and this is fine, but if i do it corectly to get the high speed on the mixure screw ( aprox 1 turn left) the scooter dont have that power and in the max rpm have problem sttutering and lose speed! wen i close all the air have power...and my problem is :i think i can get more speed...i feel it how rpm increase but stil slow increase...but i do not have more to close that screw mixure...and the pilot jet its big enough! thanks for video1 can you anser me please?
You shouldn't be fiddling with the mixture and needle settings for max power. Tune high throttle positions by selecting the best main jet.
www.49ccscoot.com/faq/carbtune.html
Finding your Carburetor tuning videos so
Helpfull!
Thank you!
Could you do a video on how to remove the 'Clutch Bell'
Without a impact wrench please?
The clutch bell should be somewhat simple. Hold the rear brake and use a large ratchet and it should come loose. If you've got someone to help you can have them sit on the scoot and hold the rear brake to make it easier for you to use the ratchet, and their weight on the scoot will keep the wheel still easier.
2:25 i cannot take of these things. the cable is in one hole, its not like yours, it cant go out. what to do?
Trying to find one of those little spring clips that holds the needle and the e clip in the round slide for a 26 mm round slide carb do you have any suggestions where I can find one
Luckily I haven't lost one of those and had to replace it. I'm not sure if there's some common spring clip or not, but if it's a name brand carb my first attempt would be looking where they sell carbs and parts of that brand. If it's generic, then see if you can find a parts site of anything that uses that carb and see if it's listed in diagrams. Sorry that's prob not a lot of help, but I'm not sure.
Any suggestions as to why my brand new carb adjusted right would bog out at WOT?? Would it mean the main jet is too large?
Could be the main jet too large or too small or clogged. Most of the time things are fine new, but not always so I clean new carbs before installing. If it takes some time before it bogs out, then maybe insufficient fuel from float height or fuel flow.
Nice tutorial as always. Where is best place to find purchase this part and other carburetor parts for this set up. I have NXL 90 cc Eton with this carb. Thanks Joe
I use eBay a lot. Polaris 90 and then the part you're looking for works a lot for me.
I can not find out how to get my 90cc monsoon 4 wheeler to go full throttle when ever I floor it it bogs down and dies I've tried the air mixture screw and a lot I things need help! Please reply! Thanks!
Have you tried different main jets? Is the airbox installed and in good original condition? Is the air filter clean? Check for a cracked intake or hoses that could cause a vacuum leak.
I had a similar problem, a quick check is to put your hand over the air intake, if it runs better when you block it than you need a bigger jet
Love your videos and they are always a huge help. I am having an issue where my 1998 yamaha superjog 90cc (horizontal minarelli) will start and idle fine ( revs up fine when NOT under load) but when riding the 1/4 throttle feels good and wide open feels fine but 1/4 to 3/4 will not rev out. If i cruise at half throttle and twist to full it just bogs entirely but I am not sure if it is a lean or rich bog.
The carb is a stock chinese copy of what would be the original. Engine is completely stock 90cc from Yamaha.
I have tried every needle position from 1 - 5 but the scooter still remains powerless 1/4 to 3/4 throttle. Any advice would be greatly appreciated. TIA
I would expect that to be needle position, so with it not responding I would clean the carb thoroughly and see if it improves. This also assumes that it ran well at some point prior. If it never ran well, then maybe it's the wrong needle.
@@49ccscoot thanks for the swift reply! the carb on there now is a chinese replacement that I bought new to replace the old carb that the Jog came with from the previous owner
That old carb was supposedly from the same supplier but differed slightly with its layout. I chose to replace the old carb with a new carb as the prelube inlet valve had been broken off and the previous owner was running it premixed.
I have no idea if it ran well in the previous owners hands as I was not able to properly test it ride before purchasing it. My fault but was eager as they are pretty rare to find the 90cc
UPDATE: The needle from the old carb is longer than that of the new carb and so I have put the old longer needle with clip in middle position into the newer carb and the scooter feels much more responsive from 1/4 to 3/4 throttle. The air mixture screw might need to be retuned now
my gilera runner sp50 2010 bogs under load on full throttle ive cleaned the jets im thinking it maybe the needle valve?
Clean the whole carb. Make sure the bowl is filling and staying full. Make sure you have good fuel flow. Those are the basics. If you've made changes and it's doing this, then it could need tuning. Make sure the airbox is installed and in good shape with a clean filter. If it's bogging on throttle application and then works OK, it may be as simple as a needle position adjustment.
does the needle have anything to do with how the bike idles. im having a hard time tuning bike up to quarter throttle. it goes on but my bike turns off after it idles for about 1-3minutes.
The needle and main jet can affect idle, but usually they only have much effect if they're way off. Try swapping pilot jets, based on what you have to do with the idle mix screw. If you have to turn the mix screw all the way rich to get it to work best, swap in a larger pilot. If it's gotta be all the way lean to work best, try a smaller pilot. Also make sure the float height is set correct. If it is set high or low it could change fuel delivery.
Moving the needle does what exactly? performance wise...
Different needles would have different diameters and/or tapers and/or lengths. Thinner and shorter needles will allow more fuel flow. Thicker and longer needles allow less fuel flow. The way different needles are tapered helps to control how much fuel they are delivering at certain heights (throttle positions).
If you leave it at the forefront of what fuel costs are you can explain
Question. When I change the main jet, do I need to adjust the position of the needle or do I leave it as it was? Thanks
Leave it. You don't want to change a bunch of stuff at once because it gets confusing what is working and what is not. www.49ccscoot.com/faq/carbtune.html
I have a BWS100 Yamaha with similar carb. Doing a service on it now. Can you advise on float level?
No worries just found it in the next vid. Cheers!
Super
+90GTVert hey man where did you get your jet kit? Or did you make it up as you got more?
I bought most of my jets from JetsRUs. It's not a kit. You can get small kits from PartsForScooters.
do you know of any stores that carry a c clip that is small enough to replace the one on the needle in the carb?
Check local hardware stores. Ace and mom & pop stores are your best bet I think. You may also try RC hobby shops because they use some tiny clips. Take the needle with you.
Lost my ilde mixture screw on the road. Not cool. Had to make one and retap the carb to 1/4-28.
Please can you tell me , where I need to install first the acceleration cable to carburetor or throttle ?
You can do it either way, as long as you leave slack in the adjusters.
Hey brother I have the weirdest 2 stroke scooter/Pitt bike mutant I'm guessing its50 CC's it has kmb stickers but no serial numbers any where this thing is built like tank do
There's a company called Kayo KMB that makes some pit bikes. Maybe browse their site and see if you can find what you have.
Still using this in 2018
That little clip I didn’t know how to reinstall was searching you tube all day thank you now I have another problem when I start the bike it runs at full throttle can you help me it’s like I’m giving it full throttle the engine is screaming
Take the top of the carb back off and check it over. Sometimes the slide can be installed wrong and the throttle is stuck open. Before you start it, check throttle movement. If necessary, remove the air filter or airbox so you can see if the slide is down where it should be rather than risking a runaway scooter.
3:32 if i want perfomance where i need to put lowwer in center or higher (sry for bad eng)
How do I adjust the cord because as soon as I start my atv it accelerates real fast. Can you help
Watch the steps here to make sure it's put together properly. Watch the vid below to make sure it's not just an idle speed adjustment. Then look for adjusters on the cable. You often have at least 1 or 2. Check by the throttle, at the carb, and near the center of the cable. They usually just look like treads and a nut. The more they are screwed out to basically elongate the cable sleeve, the more they tighten the cable and that would raise idle speed.
ruclips.net/video/A1vRMERs4RQ/видео.html
I got the new carb but how I get the throttle cable out the top of it (the curve metal piece ?
Out the cap
The cable should just pull through. If you're trying to remove the curved piece from the cap, they aren't meant to be removed. Look at the underside. You may find that it's flared to keep it in place. If so, it could be ground or cut to let it pull through.
Hi my man. Is bogging on the bottom end due to diryy carbs or fuel line issues? usually only happens everytime i first start the scooter cold during the day it bogs on take off but once warmed up after reving a few meters or so, bogging is gone.
Simple solution is let it warm up. It's likely too lean for good cold start running.
hey ive got a question so i have a dilemma so my carb needle fits in my carb but it will wiggle freely up and down (until it hits the little bit that is supposed to be holding it in i have no idea how tf i am supposed to make it stay still considering there is a chance i have the wrong piece or i way have just done sumething wrong. but the lip on the iside is so big that the needle is not held in place by the bit. looking for some help from anyone
I'm wondering if you have the wrong parts or something was worn or modified at this point. You could go on the forum at 49ccscoot.proboards.com and post pics or a quick vid so we can see it. That might get you some better advice.
Si usa un spray para ver entrada de aire y con un vacuometro ajusta el tornillo piloto el carburador ,...
How do you readjust the throttle cable at the end without creating slack? I tried but could not get any tension on the cable.
You should be able to screw the adjuster out so it's longer and takes up slack.
@@49ccscoot Thanks! I'm gonna try it today!👍
I usually experienced bogging at 1/4-3/4 throttle when the scooter is running from cold and start it when parked for hours. But it runs fine when already warm. Do i need to richen the needle a notch down? Or do i just need to warm up my scooter for 7-10mins where it runs fine at that time and solves the issue?haha
From another post, it sounds like maybe there's an issue with your enricher or perhaps idle settings. You cna try a position richer and see how it does though.
Tell me why my motor will not crank all the way over it only go so far on my 300 t e k 300 Honda
You explained everything very well thank you. I just need to know what the name of the clip that holds the needle down (the one you grabbed with needle nose pliers) called???
My carburetor spacer has o ring on 1 side ,that go up or down
Usually that will go down, below the clip.
what causes that same carb in you video to flood fuel out the vent when running andto start thebike you hae to cover rhe carb forcing it rich?
I'd start by checking the float height.
Will do . I appreciate your advice and so does my adly
I’ve just rebuilt my delorto 17.5 and my needle was all the way in when I tore it down. I’ve set it to middle now and wondering if I’ve messed up! What would be the symptoms to make you want to go either way on it?
The good news is that you've richened it up (assuming all the way in means lowered all the way). If it's too rich, it may sputter part throttle or during transitions. If it's too lean, it may bog and you should see elevated CHT if you have that gauge.
@@49ccscoot I guess it’s just trial and error then!
@@ShalomBrother Basically. There is a guy that made DellOrto Needle Carb Fuel Mapper. It's a program that will show you the effects that changing needles and needle position should have on mixture. You still need to do test runs though.
My throttle isn't working at al every time I start it wants to take off maybe I didn't line up the groves correctly for the needle to go up idle sounds very loud too any idea how to adjust the the mixture and the idle screw to the correct location 🙏
I'd start by taking the throttle cable and slide assembly out and carefully reinstalling them. Usually these issues are from improper installation. Could be something sticking or the idle speed screw is set too high. You can turn idle speed screw a couple of turns out from seated. That should be good enough that it doesn't rev too high if it's the problem.
Thank much appreciated 🙏
Hi, please help. My needle has 5 positions. My question is, if I have the needle is in position 5, super rich cause that’s how my kart runs fastest, should I change the pilot jet to a bigger one and then bring the needle down to position 3 or 4? My understanding is that if the needle is in position 1 or 5, you should change the pilot jet to a smaller one or bigger one, so the needle ends up in position 3 or 4, is that correct? Thanks 🙏
I usually put the needle in the middle to begin tuning. Dial in the main jet and pilot. Then figure out where the needle works best. If I can't get it right at that point, then I may go back to jetting.
I installed a new accelerator cableon the kids 110cc loncin changed from twist throttle to thump for the kids, now i have no throttle at all, was wondering if anyone could help, the needle on top where cable goes into carb, moves up and down?
Verify that the throttle moves when everything is installed in the carb by removing the air filter and looking in the mouth of the carb. If it doesn't move that way, pull on the cable by hand and see if it moves. If that works, there's an issue with the throttle most likely. If that doesn't even work, examine the connections on the carb side again.
it works when i pull on the throttle cable the bike moves, but the won't do anythink when i try the accelerator on the handle bar, when i had taken the cable off from on top of the carby there was nothink on top of the needle like in your video
If everything works fine pulling on the cable and not using the throttle, then you have something wrong with the throttle.