Yamaha TTR50 Idle Set Screw Adjustment
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- Опубліковано 14 вер 2020
- ua-cam.com/users/MaddieMaseF...
There are a ton of forums, channels and pages asking how to make an idle adjustment on the Yamaha TT-R 50 carburetor, so i decided to make a video! Its hidden behind a Welch Plug and can be a little tricky to get out! This video will also show you how to remove ANY pressure fitted plug the easy way! Similar to removing a stripped screw the easy way! I hope this helps! Be sure to LIKE and SUBSCRIBE!!
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Duuuude! Thank you for this. I bought my son a ttr50 last month. This exact idle issue has been plaguing us since day 1. Its been super frustrating, especially for him. Today he really wanted to ride but I told him I would have to pull and clean the carb first. I stumbled upon your vid and BAM! She's running like a champ now!! I owe you a beer.
You got it brother!
You kinda got them switched. The one on the front near the throttle cable is the idle screw (it raises or lowers the idle to a correct 1600-1800 rpm after you've set the mixture), the other one is the air/fuel mixture screw.
Alex Cristescu odd! I found an online manual that said the exact opposite! Thanks for correcting though!
@@realmmfc
The 2021 model shows that first screw as the idle set screw (flat head knurled screw near throttle cable). The other screw isnt labeled, but its no longer covered. I tried screwing that in all the way and the engine stops (even when holding the throttle back). It was set to 1.25 turns out.
The Yamaha dealership that I bought mine from said the screw by the throttle was a “governor” to control the speed until my son was ready to go faster.
Definitely need to get past this Welch plug so my sons bike doesn’t die non stop
Thank you! Great video simple and easy!
Thanks buddy!
thanks man.. this was doing my head in
I just got my son a used TTR50, his is a little tired but this video helped a a lot! Thanks
For the info!!
No problem man. If you still can get a smooth, clean idle, cleaning the pilot jet will most certainly do the trick!
@@realmmfc thanks again! I’m going to do these tricks this weekend before me and the little guy for a rip!
The chop from the 128 sounds so mean strait thumping 🔥😂
Dude it’s a straight up blast!
Thanks I just bought a 2019 ttr50 for my 5yr old. Having the same idle issues.
Mine will never start when grandson wants to ride it. Lol. Thanks for the vid. Still won't start though. Again.
Yeah. That’s a fickle little machine if I’m being honest.
Is it the same for the ttr 110?
What year ttr50 do they all have e that hidden screw
One would think it'd be designed/built so it's in full view, just making it all user friendly
Obviously Yamaha does not care since they have basically not change anything on these bikes in over a decade. Very sad that these entry level bikes should be feeding families into the Moto world but for many, including myself it is a big disappointment. This is why eventually electric bikes will get there and there will less parts to screw with
Do you know if the 110 is similar? Mine runs good but has a really low idle and tends to stall a lot
The placement isn’t the same, but the 110 does have an idle adjustment and air screw. On the 110, the idle screw is directly on the side of the carb.
You failed dimension what tools to use and putting it back on how did you do that?
Oddly enough my 2021 I just bought flames out constantly. Wouldn’t even idle. Just would die without partial throttle. I turned that screw further and further to the left. Sounds like we had similar issues but needed a different adjustment.
Exactly. Glad to hear you got it sorted out!
The carb in mine is much different and it has the air fuel and idle screw next to each other.
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That’s the fuel screw man, your idle is below your throttle cables on the carb, little flat head screw, adjusting your fuel screw could cause it to be too lean or too rich.
Appreciate it, you’re among several that have corrected! I was provided my information by a Yamaha tech which is sort of scary lol. Thanks for helping the others in the comments though!
@@realmmfc oh wow I’d say the Yamaha needs some more Yamaha training! What size jets do you have in the carb do you know
@@G1bson258 never messed with the jetting on that bike. Sold it back in March and bought a KTM 50 as he outgrew pretty quick
How do you fix the stiff gear shifter??
That was a battle for us too. Mason was never really strong enough to shift when right-sized for the bike. Now that he has the KTM 50, that problem has been solved!!
there is a video on here i just found because my daughter cant shift her 2021 either. im going to try this today
ua-cam.com/video/814mCxx8nOQ/v-deo.html
Did you leave the plug out?
Yes I did for ease of access
Will removing it cancel my warranty?
The Welch plug? I wouldn’t think so, but wouldn’t hurt to ask the dealer to be sure.
Shouldn't you have it at 1600-1800 RPM at idle which is +- 14Hz
Little help, I successfully got the Welch plug out but can’t really get any stronger idle out of adjusting the screw. A turn right it dies, a turn left it dies.
same issue here
@@laycelong9857 The video's wrong AFAIK. The screw behind the plug is the mixture screw, not idle.
That screw behind the plug is the fuel mixture screw. Turn it out richer mixture. Turn it in leaner mixture. The other screw is the idle speed screw. Adjust the idle speed first then the fuel screw
You don't say how to replace the welch plug....
Tried this. Drill the little brass cap out. Turned the screw out. Turned the screw in. It doesn't matter. Bike will not idle. Revs with the choke on slowly drop then it dies. Choke off it dies. Engine is so hot I can't touch the pipe guard (from holding the throttle open manually). Piece of trash. Bike is brand new.
Have gotten similar feedback from some others as well. Worked for us and still runs good. Will agree that those carbs are trash.
@@realmmfcI think I figured it out. There is a knurled screw beside the throttle cable insertion. Someone claimed it is the governor, but it is the idle speed screw. It was set to basically 0 rpm from the dealer, so I had to actively hold the throttle open for it to run.
Dude that is pilot screw you are playing with.
The idle screw is accessible already. Obviously they wouldn’t plug the idle screw it doesn’t harm your enegine when people play with them. But the pilot screw on the other hand can that’s why they plug it