Dirt Bike Basket Case (Pt 1) - Blown Yamaha TTR125 - Teardown
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- Опубликовано: 31 май 2023
- I found a great deal on this Yamaha TTR125 on Facebook Marketplace. The bike is pretty new and looks complete, but the engine is a total mess. Someone else already took it apart and decided to sell it when they saw the extent of the damage. What caused the failure and is worth repairing? The damage is pretty bad.
Dirt Bike Model: 2015 Yamaha TTR125LE
TTR Rebuild Playlist: • Yamaha 2015 TTR125 Reb...
Part 1: • Dirt Bike Basket Case ...
Part 2: • Dirt Bike Basket Case ...
Part 3: • Dirt Bike Basket Case ...
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#Yamaha #DirtBike #Fixed #Troubleshooting #HowTo
Basket Case, Bent Counter Balancer, Bent Shift Shaft, Bent Valves, Bent, Blown Engine, Blown Oil Seal, Connecting Rod, Conrod, Disassembly, Dirt Bike, Fixed, How To, How-To, Load Test, Low Oil, No Oil, Piston Disintegrated, Piston, Puller, Rebuild, Repair, Seized Engine, Severe Damage, Shift Shaft, Small Engine, Stuck Engine, TT, TTR 125, TTR, TTR125, TTR125LE, Transmission, Troubleshooting, Tusk, Wiring Harness Short, Yamaha 
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When I saw the part where the wires were twisted together, the first thought was stolen bike.
I wish I had the time and money to gamble on projects like this. It is fun doing stuff like this. I recently revived an ATV for a friend of mine. It had not run in a few years, and a carb rebuild turned into a carb, starter, solenoid, and battery replacement. It was a lot of fun, but I got it running.
Love engine teardowns . It's like reading a crime novel . Can't wait for the plot to unfold .
Your kids must be stoked that you bring home stuff like that.
It's a business, though, so perhaps they don't get to ride them.
If you look at the background, he keeps a bunch of stuff. I do the same stuff as James and the kids have ultimate decision on what happens with stuff…
Clearly the kids say their Dad is the Best Dad in the World.
Interesting video. Don’t want to miss the rebuild. 👍👍
@@brad9529 I'll bet they do through incessant nagging.
Thank you so much for a different type of build! Love dirt bikes, mini bikes, and go karts so this is exciting. I have to say, you are the “Bob Ross” of engine and electrical work! Calm and collected, careful and thorough. It inspires me to be a better mechanic when I work on the few items I have around the house. I even have my wife watching your videos now!
I wasn't going to watch this because my thing is generators, but you hooked me. I never knew there was so much packed in that engine and transmission assembly. It was like unwrapping a mechanical Christmas present. Thanks for a very interesting video. I really enjoyed that and learned a lot.
9:50… Poor Mrs. Spider getting evicted from her home, after all the tapping, crawling from the engine toward the right of the frame… 😂😂😂 … You made my day with this video. I love ALL your work, but I really love bikes, and so this one is special, and I was hoping to see stuff like this from you, knowing your excellent skills… Thanks! 😊😊😊
I have to tell you, I find your lack of four letter superlatives simply amazing! I would have run through my entire list of them in the first ten minutes of the disassembly 😆😆😆
James I had more fun working on and riding a 1978 DT125 enduro oil injected back in the mid 1980's. Had a friend that was in this 70's of age that had a Yamaha 160 and he bought his late in life young son a Honda 4 stroke 100 enduro. We had fun riding them in the Logging roads of southwest Arkansas. The roads were all mapped by Weyerhaeuser Forrest preserve and we could actually ride in any direction all day long then get back to a truck and three bike trailer very easily. After we migrated to the first three wheelers and four wheelers it was never the same but we all agreed the simple two strokes were so much fun. We could tear them down and make repairs and be back out the next weekend. We had a great family that owned the Yamaha dealership and they were alway glad to help us with parts. Well maintained simple bikes like the 125cc were so great.
I own a yamaha ttr125 exactly like this thankfully it runs great awesome video being able to to see this engine disassembled, often the shift forks and shaft get bent from stomping on the shift lever, someone falls down has to pick the bike up gets upset and stomps on the shift lever, I have to remind my grandchildren not to do this, sometimes they do it without thinking.
Excellent video as always, James. It occurred to me why the Ignition switch may be missing. You're not going to like this, but perhaps the bake was stolen at some point. And because the person who stole it didn't have a key He then cut the ignition off to use the bike. Which would possibly account for why it was ridden until it ran out of oil. Just as a joyride bike. I hope you have better luck with it, and I hope it goes together well for you. Thanks for sharing.
I was thinking this too Brian. but it could also be owner lost key and didn't want to pay Yamaha extortionist price for new locki/switch mechanism. It also could have changed hands broken, without key, and new owner did wiring hack before realizing bigger issues. That may be more likely since it never could have worked the way the hack was wired according to James. Definitely an interesting mystery on top of all the mechanical trauma !!
The word "stolen" popped into my head more than once while watching this video, but James is not the type to buy something without a legal title.
@@TheOtherBill Dirt bikes are usually just bill of sale around here (Florida). Nobody messes with titles on off road vehicles. No reason to register them, so there's no benefit of paying to transfer the title.
It's James Condon Fixes All instead of Teryl. Good work and God Bless!
Excellent Post-Mortem. I think you absolutely figured that one out. Amazing!
My favorite part of this entire video is how you completely win forensic files on determining how This bike was destroyed! You are a true master of your craft James!
Your work arounds for special tools always impresses me, I'm looking forward to the rebuild.
Nice work James. You can put the valve pins in the freezer the night before you are ready to install them and they should just tap into place with very little effort. Don't take them out of the freezer until you are ready to send them home. I gave up two wheel riding about 3 years ago when I started having issues with my legs. I had ridden motor cycles for 45 years. The only thing I would ever do to my bikes was typical oil filter changes ,cleaning and inspecting. Beyond that I would take my ride to a qualified technician. As the saying goes ( there are those that have been down and there are those that are going down.) Its dangerous enough being on two wheels. I didn't want to pepper in mechanical mistakes on my part to cause me injury or death.
Yea but other guys really love this hands on repairs just as much as riding them or buying some one else's disasters and putting them back together and today with all the videos out there it's much easier than when I was growing up just take it apart and figure out but I know we're your coming from also sir
I applaud your persistence. Especially on that intake pin. With all the pullers and little surprises like that ball in the end of the crankshaft, I highly doubt that this would be a project for me. I’m impressed by your advanced knowledge on these engines and your keen ability to autopsy the causes.
A lot of research went into this one. Have not worked on an engine like this before.
Getting everything apart is the easy part.
@@jcondon1 well done! even though it's only a teardown so far. nice to see new content! Brings back memories of my first bike when I was about 13. A friend used it for about 30 seconds, ran thru some tall weeds and tore off the gear shifter. every penny I owned went into buying the thing and I had no money to fix it. It sat for a year then my dad found someone to "weld" the piece together. It lasted a year and sheared off again. had to give it away.
@@jcondon1 43:00 I THINK. The bike wouldn't start because of wire issue so the owner dragged Bike in gear behind a car to bump start it. That's why wheel is bald
That's why the swing arm dust i bet is not oil its rubber dust
Ya more dirt bike rebuilds Awesome.
@@Melicoy I never understood the dragging behind the car method. If it doesn't start with the electric starter or kick starter, something is wrong and needs further diagnosis.
I'm always impressed when someone splits the case, especially when they are not a schooled mechanic, ( I'm figuring you're not a schooled mechanic ) but even if you are this is no small thing, yes it is doable ( although I wouldn't attempt it without the manual ) having said that if anyone can do this and make it look easy it's you, I have complete confidence this bike will run well again, looking forward to the rest of this project
Not schooled but I did buy the service manual for this project.
My hats off to you, this is a mechanics worst nightmare " a pile of parts". I have an old Yamaha IT-175F and it had the same problem, a leaking shift shaft seal but since it was a 2 stroke it wasn't an issue. Just from the title " Blown Yamaha " and the picture I at first assumed the engine had literally blown up into pieces and had fallen off of the bike. From the do-dads on the spokes I can assume maintaining this machine was not exactly high on the previous owners list of to-do items. I would have liked to have been a fly on the wall when they brought this ( literal ) basket case to the Yamaha dealer. I'm looking forward to seeing a continuation of this. Great video.
I feel your pain. I just had to remove an "easily removable" bushing from a tiller. After much beating and the power of PB blaster I managed to get it out. Shouldn't have needed to be that hard to remove. Getting it back in after replacing a seal was almost as hard. You have again proven you are way beyond my level of expertise.
I appreciate the variety! I know i will enjoy this as much as i did the gokart video!
I wait with alot of anticipation for part 2 to this Bike Video! Great Job! You repair and educate at the same time. Not many can do that!
That’s a very good beginner dirt bike to introduce your children to the two wheeled world of off road riding.
It also has plenty of suspension and power to carry a typical adult around with relative ease while putting a smile on their face at the same time.
It is not a motocross bike, in any way, shape, or form, but it will certainly get the imaginary juices flowing, and that it what it was designed for.
Typically made for a 12-13 year old, or around 5’ to 5’-6” in height.
The TTR 125 comes in a couple of different variations.
The 125 has a 17” front and a 14” rear for the wheel/tire size.
The 125 L has a 19” front and a 16” rear for the wheel/ tire size (hence the “L” for large).
The 125 LE adds an electric start (hence the “E” for electric start).
I’m sure you already know all this Sir, as your videos prove that you are a well seasoned small engine mechanic with very impressive knowledge of small engine problem solving capabilities and ingenuity.
It’s a good bike for the kids to learn on and Dad. I have never had the opportunity to ride a dirt bike. A little small for me, but should have no issue moving me around at speed. Also good size for the ladies.
Yes Sir, the TTR 125 has a low seat height, and that makes it comfortable for a broad range of riders. It has more than enough power to get you around the property and put smiles on faces. It’s a well rounded fun bike. My Dad (180 pounds) rode it all the time, and he loved it. 😎
Thanks for the reply Sir !
Awesome bonus footage. You really have your capable hands full with this project. Looking forward to the completion.
Great video. Always a pleasure watching someone with me mechanical skill, learned from hands on experience, problem solve and diagnos both mechanical and electrical issues. Really looking forward to the followup video.
Great video, James, as usual! We’ve been watching for your output for a good while. Thanks!
Nice to see something different on the channel - not that I’m complaining about other videos, just merely applauding it.
Awesome vid, James. Love the root cause analysis at the end. This is way better than NCIS. Looking forward to pt. 2.
I’m really looking forward to part two! May I suggest you get yourself a generic slide hammer kit next time you’re at the tool shop as they can be useful in many different situations. Cheers mate, Stuart 🇦🇺
Looking forward to part 2. :) what a mess of an engine based on simple bent shift rod and seal.
Thanks for keeping us all entertained. :)
That was fantastic. Nice to see a more complicated repair process. I'm hoping for more motorcycles in the future.
I'm enjoying this. A nice change of pace. I know you'll succeed. Looking forward to another episode of progress.
I really enjoyed the "slide hammer hack". Great vid!
Takes me back to my late teens working on Yamaha's , in those days they where simple air cooled two strokes and spliting the case was always a nervous time ,no cameras or youtube in those days just a dirty old workshop manual if you where lucky. Very enjoyable vid your patient and methodical work procedures and your calm and articulate voice are a pleasure to both my eyes and ears and of course my brain . Looking forward to seeing this machine riding around your yard running like a brand new machine. The prices you quote for parts are much cheaper than we pay in australia . Our exchange rate drops our dollars value but even taking that into account the USA is the place for good value for money parts.
Great job figuring out where the problem began! This will be a great one to watch go back together! I expect some wheelies sir! Great video as always James!!
I loved the MacGyver'd slide hammer.
What happened to “ that’s all for now thanks for watching “. Can’t wait to see putting her back together. Love your videos. Thanks
Great video, can’t wait for the next installment.
I really enjoy your videos. I have been building engines since I was a kid (quite awhile ago) but still find your videos interesting and informative. Glad you focus on the project and no annoying music. Wish other YT's would take some lessons from you. And I like that you vary the projects and not just generators.
Eggcellent & different , James.
Another highly enjoyable episode from The Master himself.
Thanks for the free & informative entertainment.
Thanks again , watching you being methodical and careful is very interesting thanks again .
Nice detective work Doc.
Fantastic tear down. Great narration. Really enjoyed that. Thanks for sharing
Holy cow that is a lot of parts. I don't think I could ever get it back together. Looking forward to you getting it up and running. Thanks for the videos.
Looking forward to the next video she looks like she can be saved good work @James Condon
Hi James I definitely love every video you post, You include so much valuable information on small engines and everything to make them work…I’m definitely Looking forward to seeing this bike run again and would definitely be amazing to your viewers…amazing job well done.
When the multi-meter comes out, good things happen 😀Came here for the video, stayed for the life lesson!
Great video and I’m waiting for part 2!
Can't wait to see part two 😊
I really enjoy your videos and look forward to seeing this finished
Love your videos and your attention towards detail.
Great find , and good work !
I look forward to hearing it run.
28:12 James shows outstanding ingenuity. I’m impressed
Great Video James Thanks!👍👍
Looking forward to this one, I do this struggle every once in a while trying to get machines on the cheap and it always ends up being more than I figured.
Excellent production values. 👍
Not just a mechanic he is also a very impressive Miss Marple.
Great find. Just hope you can get all the parts you need and I'll be looking forward to the rebuild in the future.
Oh and I would have to say I agree with you on the dissecting the actual cause of how it ended the way it did!
As a former motorcycle mechanic (in the seventies) I thoroughly enjoyed seeing your teardown, also I am under the impression that this is not the first bike you work on
Good Old Basket Case Project to Get the Excitement Juices Flowing To jump into this sweet project head on Engine Looks Decent @James Condon
Amazing deductions James 😊
Nice Video... can't wait to see part 2
The one tool that is the best thing to have in the tool box is the harmonic balance puller
agree Robert - super useful . simple piece, i got mine super cheap like a thousand years ago , might have been from an early-days harbor freight store..
@@GannDolph I have one of those myself went to the hardware store and got nuts for the different bolts and used it to remove a tire from a riding lawn mower it did the job with ease 💪
Great job James.... favorite viewer from VT.
I am looking forward to seeing the rebuild of this motorcycle thanks for producing another quality video
thank you James
Great vid. thanks from an old motor cycle rider in Australia.
That was a real catastrophic failure when that engine blew, at least the engine case and transmission survived, looking forward to part 2!
At 31:08, that was a very clever trick of using parts from your other puller to create a puller with the socket. I never thought of that! Thank you!!
Tune in tomorrow-same Bat-time, same Bat-channel!
It seems weird watching you work on something other than generators. To me it's kind of fun working on something else that i've never had much experience in
You rock dude! Love your video/content quality.
Thanks
Very nice job so far. You're a braver man than I.
6.1.23 You now work on motorcycle engines as well. Great video.
I do now
Great video james
Love the “specialized tool”👍👍👍
I must applaud your perseverance and expertise, especially when tackling the intake pin and uncovering those unexpected surprises like the ball in the crankshaft. It's truly impressive how you possess advanced knowledge of these engines and your ability to diagnose the root causes. This project would definitely be a challenge for most. Keep up the great work! 🏍🔧👍
That ball in the clutch operating shaft is common to almost all small displacement motorcycles. What intrigued me is the bent balance shaft.
@@brianallen9810 Personally I'm not sure it was actually bent, you would really need to put it between centers to check properly. there is probably enough slop in a single bearing to give a false impression. I would replace balance shaft bearings even if I didn't change any of the others as they are quite small and get a really hard life. Probably a standard size so cheap (something like a 6202?)
Great video! Please more like this.
Thank you for the video I'll be looking for the next one
Looks like a mess to me. Thanks again for sharing this video with us.
How can you remember how everything goes with back together? I noticed you didn’t have a shop manual. You never cease to amaze me👏👏👍
I ordered that crankcase puller after watching this, thanks. That said, I have like 30 pullers and every time I need a puller it's never the right one.
Very neet puller to pull that engine and transmission apart @James Condon
Looking forward to part two 🙂
Great video, always goes to show that if you don't look after your stuff, you'll end up paying dearly.
I made my own slide hammer with the ability to change the end to anything from bolts to hooks, so you can use it on anything.
Definitely something that deserves to be saved. Great work.
Ya, ma, haaa!
@Paul Frederick always been a Yami fan
Hi, James. Dirt biking was one of my hobbies. I hope you can get that bike to a usable state. Always wear a helmet when riding a dirt bike. Thanks for sharing!
Brilliant video and another incredible deep dive into various engines and equipment. Disappointed that you didn't fit a briggs and Stratton 11hp into the bike frame
Briggs is Chinese garbage. HF Predator is the bee's knees (while still smelling like flied lice). 😁👍
New video! How cool.
About the oil leaking from the shifter, this is what is happening with mine, Thx for showing me the part :>
You have to love a lack of maintenance. Always entertaining videos.
I have a ttr 225 and it is a super fun reliable bike, i know you can get this one back on the dirt.
Title of video should be: CSI Blown Yamaha TTR125 - Teardown by Detective Condon. lol When you said they probably got hurt bad, I lost it. I can just see some good ol' boy zipping along and then flying over the handle bars.
Great video as always.
Advice time...... When using percussive persuasion tools like slide hammers or any other type, ensure that the part is fixed to a bench and that the bench is fixed to the wall or floor so it does not move.
You were losing almost all the inertia in that slide hammer due to the part moving. Try it and you will be surprised at the difference it makes and how little effort is required.
Looking forward to the next video
Percusion happens so quickly the impact is delivered before movement can occur. That's the magic of the method. I was on a job and a guy was having all sorts of problems trying to remove the blade on a concrete saw. So I stepped up and tapped on the wrench with a hammer and loosened the bolt right off. It spun before the blade even could. Because I'm a magic man with magic hands.
@@1pcfredYou are correct in some instances. Bolts are different to what was happening here. My experience and physics says that in the case of the bolt, if the item the bolt is attached to has sufficient mass then it will work as you suggest. However, in this case the item overall has little mass and the item was being pulled, not rotated.
Significantly more friction and little mass.
@@Byzmax nope it just works. Your physics is flawed.
@@1pcfred 🤣
43:00 I THINK. The bike wouldn't start because of wire issue so the owner dragged Bike in gear behind a car to bump start it. That's why wheel is bald
That's why the swing arm dust i bet is not oil its rubber dust
Ya more dirt bike rebuilds Awesome.
WOW what a mess! I am surprised that there was anything usable left in it. This will be an interesting rebuild. All surprises are probably discovered. Great investigation especially the ignition. Thanks James. Ed in Stafford Virginia
If it was me I'd have punted that engine across my garage and just went drinking. She done.
Nice RV dealer in Stafford. Had to make an emergency stop there once.
Your knowledge on the bikes, seems like you have done this many times...if you havent, then do more! This is great content!
First time, but have watched a lot of @2Vintage videos and he inspired me. He makes it look easy.
@@jcondon1 I will check him out. Thanks.
That was a pain, nice going James
Quite obvious you skooled, (I know), yourself before filming. I applaud you cuz the presentation is so much easier to follow than the book. The published words are tougher to edit and delete than the spoken oration and minor mumblings of a true pro mechanic in a family oriented vijayo. I tip my beer glass to you Sir.. K