TTR125 hard start problem FIXED !!

Here is how to fix your hard start problem. Assuming your carb is clean and gas is good, this will fix the start problem. Yamaha put a tiny hole for the gas the go through to get to the choke circuit at the bottom of the bowl. The problem is that thats where all the dirt and grime goes to when the bike sits clogging this hole. So you are basically starting your bike with the choke off if the hole is clogged. That’s why it will eventually start and seems to run fine after its warm. You’re basically warming it up by kicking it..

Remember the goal is not to make the hole bigger, its just to clean it out and be sure its flowing freely.

Do this fix and get back to riding and enjoying your bike.

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Categories: Motorcycle


  1. Aqueel Ali
    Aqueel Ali 28 January, 2016, 07:50

    Don't rev the crap out of a cold engine

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  2. David Hill
    David Hill 28 January, 2016, 07:50

    I have this same problem with a 2009 TTR230. Different carb/choke design. Any ideas? Is it a similar problem?

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  3. concerned citizen
    concerned citizen 28 January, 2016, 07:50

    THANKS ttr 230 did the same thing that fixed it.

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  4. sambo moto
    sambo moto 28 January, 2016, 07:50

    On mine when ever you turn the gas on it starts pissing out of the over flow especially after trying to start it and it won't start any suggestions?

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  5. Richard Bolt
    Richard Bolt 28 January, 2016, 07:50

    I saw a lot of oxidation around the choke plunger and spring when I took mine apart I finally tugged it a bit and it came free .When i pulled the carb I disassemble it all the way down as far as you could soaked it and cleaned it throughly ,and Shazam it started first kick . Enjoyed the video and thanks for posting.

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  6. MaddenMobileKid
    MaddenMobileKid 28 January, 2016, 07:50


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  7. Cocoa Cabana
    Cocoa Cabana 28 January, 2016, 07:50

    thanks for sharing same carburetor on a 2005 SUZUKI DRZ125 L

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  8. Texwiller
    Texwiller 28 January, 2016, 07:50

    Thaanks! It work :)

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  9. Tepco Cycle Repair
    Tepco Cycle Repair 28 January, 2016, 07:50

    FYI for those who comment, I cant comment directly to you unless you adjust settings on Google plus.

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  10. Tepco Cycle Repair
    Tepco Cycle Repair 28 January, 2016, 07:50

    Drill bit part number is Blue Point YA246A

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  11. Eddie Saucier
    Eddie Saucier 28 January, 2016, 07:50

    What is the part # on the drill set I can't see it

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  12. Tepco Cycle Repair
    Tepco Cycle Repair 28 January, 2016, 07:50

    @Cameron Jacobsen It is indeed a 2007 with 2012 plastic, it bolts right on.

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  13. Nikolas Vlogs
    Nikolas Vlogs 28 January, 2016, 07:50

    how do you fix Yamaha ttr125l that Pisces out fuel while Idling.

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  14. Michael Yangmi
    Michael Yangmi 28 January, 2016, 07:50

    I have a ttr 125 that starts first kick but gets WAY too much air in. I adjusted the idle, but the bike still idles at a super high rpm. Whats going on??

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  15. john haroldson
    john haroldson 28 January, 2016, 07:50

    my son has the 2006 TTR-125E. he sank in in a puddle last year, we cleaned it out, drain all fluids, and it ran like a top,. we didn't ride for about 4 months and the choke cable will not pull out now. in your video you reference a choke that is stuck in the housing. if i remove the nut from where the choke cable goes into the carb, should it just pull out.or is it connected to something inside the carb?

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  16. bi iam
    bi iam 28 January, 2016, 07:50

    thank you so much for making this video. I didn't know that hole even existed n have been pulling my hair out trying different things from other vids n suggestions. You're the man!

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  17. Greg Lesny
    Greg Lesny 28 January, 2016, 07:50

    will do it today !! thx

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    SMS CUSTOMS 28 January, 2016, 07:50

    I actually cleaned the bottom end of the Carb about a month ago and it was running great. It is my Sons and it doesn't get ridden a lot. I restored this whole Bike top to bottom. Either it got dirt in it again from sitting or I am thinking it is the starter relay which is the only thing I did not replace yet… It is only 8.00 so I got it anyway.
    My other 2 Sons ride CRF 70 and these things can sit for months and kick right over.

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  19. Jimmy Allan
    Jimmy Allan 28 January, 2016, 07:50

    I used a guitar string on mine and fixed the problem of hard starting immediately. Thanks for the video!

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  20. DEON johnson
    DEON johnson 28 January, 2016, 07:50

    were can i find a 2007 TTR125 Ignition

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  21. Mark Fawcett
    Mark Fawcett 28 January, 2016, 07:50

    Orsum tepco 1 solved my problem Thanks heaps
    coming to you from Bunbury, Western Australia

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  22. Guy A
    Guy A 28 January, 2016, 07:50

    Thanks mate, just what I needed to know.

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  23. Allan Gadsby
    Allan Gadsby 28 January, 2016, 07:50

    Thanks mate. Nice video. Helped a lot. Cheers.

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  24. Brandon Healy
    Brandon Healy 28 January, 2016, 07:50

    Do you know why my ttr125 wont go into gear

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  25. drewball241
    drewball241 28 January, 2016, 07:50

    Nice tip will defiantly come in handy in the future 

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  26. Scott Siddall
    Scott Siddall 28 January, 2016, 07:50

    Thank you! Solved my problem.

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  27. Chris Mckay
    Chris Mckay 28 January, 2016, 07:50

    I had been struggling with this issue for quite some time also. Was going through starting fluid like crazy and wearing holes in my boots kick starting. I cleaned with a small drill bit and also a very small wire with some carb cleaner. Blew it out with the air compressor, re-installed and the bike started first kick. Just wanted to say thanks for the tip. The bike is running and starting great now.

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  28. Tony Carreon
    Tony Carreon 28 January, 2016, 07:50

    I just purchased a ttr125 that had sat with gas for over 3years. Cleaned the carb out several times and couldn't get it to start until I stumbled on your video. I didn't notice the hole in the float bowl that you showed. I tried your suggestion but was unsuccessful, Until… I used a guitar string and pushed it all the way through. The drill bit technique doesn't bend thus not cleaning the hole all the way. Thanks a bunch! Bike starts immediately and idles like a champ!

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  29. robert penner
    robert penner 28 January, 2016, 07:50

    Very good info, thanks. I assume that these might be the issue I am having with my 125 vino, very hard to start.

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  30. Daniel Coleman
    Daniel Coleman 28 January, 2016, 07:50

    I very much appreciate you putting together this video.  My son's 2004 TTR125 (starter bike) that he has had for about 3 months has this problem.  He thinks it is broken but I informed him of this issue and have the same micro drill kit that you have so I am going to get it taken care of.  Rejetted a few months back and should have done this while in there but I didn't have the micro drill kit yet!  Great explanation of the issue!  Bless you!

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  31. Lisa Patterson
    Lisa Patterson 28 January, 2016, 07:50

    Son's bike was hard to get started every time he went to ride, His dad did what you said and now it starts first kick every time, Thanks

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  32. Aaron Baker
    Aaron Baker 28 January, 2016, 07:50

    i can get mine running, but once i get on the throttle it runs terrible and cant seem to get the carb to "clear" up. Ive torn the carb apart numerous times and still cant figure it out. Im going to give this a shot tonight, any other advice would be appreciated. 

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  33. Cotey Reece
    Cotey Reece 28 January, 2016, 07:50

    This completely ruins the warm up capability of the ttr 125. The size of the hole directly meters the amount of fuel provided at full choke not the brass emulsion tube that protrudes into the hole. Before I enlarged the hole my sons bike would warm up on choke for 10 minutes or so before becoming too rich. After the modification the bike begins to load up and become too rich almost immediately. You then have to keep bike running with throttle for quite some time. The key to starting these bikes is to crank the bike for 5 to 10 seconds or 3 to 5 kicks. If it does not start, wait one minute and crank again for 5 to 10 seconds or 3 to 5 kicks. I had this method figured out but was willing to try this modification to make it even easier to start since they are cold natured. I will agree this mod did help the initial start up of the bike but was not satisfied with it overall due to the fact you could no longer start the bike and walk away while it warmed up on the choke. I was able to use silver solder to refill the hole and drilled it back out to the original size of 0.015". I would not recommend anyone else doing this to their carb. Yamaha did extensive research to determine the exact size this hole needed to be and in my opinion it should not be modified. Being a mechanic at a dealership of 30+ years i should have known better than to do this.   

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  34. Chris Philpott
    Chris Philpott 28 January, 2016, 07:50

    Dude thank you! My TTR has been driving me crazy, 20 kicks on a good day to make it run. I ordered the exact Snap-On kit you showed (free shipping from Snap-On btw folks) and gave it a shot. The bike is sitting in an 18 degree Fahrenheit ambient and despite it being so cold it fired on only the 3rd kick!!!! I am beyond stoked. 

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  35. DriftMissile
    DriftMissile 28 January, 2016, 07:50

    when people say you mix oil with the fuel what oil do they mean? like the oil you use to change in your bike or a specific type for fuel

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  36. Richard Minkins
    Richard Minkins 28 January, 2016, 07:50

    pull in the clutch then kick thats what i have to do

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  37. Livintheazlife
    Livintheazlife 28 January, 2016, 07:50

    @tepco1 thanks I'll try the things you mentioned and see if it works! 

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  38. Livintheazlife
    Livintheazlife 28 January, 2016, 07:50

    Any recommendations for this problem I'm having? I completely cleaned out the Carb but didnt do the method described in this video(since I just saw it today) and my bike will only stay running with the Choke on. As soon as I turn off the choke, the bike dies. Also, the gas keeps leaking out of the overflow tube. Is this a float problem, jet problem, or problem with cleaning the area listed in the video. My apologies if someone else asked the same question in a comment and you answered it. My bike is a Yamaha 125 TTRLE 2006. Thanks in advance!

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