Yamaha YZ 250 Power Valve Rebuild the Easy Way 

Hey Riley ,I truely appreciate you taking the time to watch ,comment and subscribe.Thats the elusive trifecta that channels strive for and rarely find . You absolutely made my day with your kind words . Cheers to you good sir !

Agree 100%. His instructions help me out of a very tight spot. Play Yamaha YZ250 power valve I was working on had a very serious problem. And his video helped immensely.

My small valves won’t open all the way, I’ve flipped the shaft around and tried to adjust play but it just won’t open. I don’t know what’s wrong. Both small valves will go until the small curve in the lift pin guide but won’t go past the curve part? Any ideas?

Oh Jeez man ,your comments have to be some of the highest praise I've ever received. I certainly don't feel like I deserve it .There's lots of channels out there putting out much better stuff than mine .Having said that It's my pleasure to help you and others in any way I can .You made my day knowing that you were able to work on your bike with confidence and hopefully enjoy many many hours of riding with your friends, cause really that's what it's all about. Cheers 🍻 my friend and ride safe 👍

@@CraigSteinman-zt3vu Hey Craig I have to thank you very much for such a great comment. I truly appreciate you taking the time to watch and respond so positively. Cheers to you good sir 🍺

Hi Mike Thanks very much for watching and actually taking the time to comment so kindly .Also ,the fact that you subscribed is fantastic I truly appreciate it ,thank you . The YZ 250's are such a fun bike to ride and great to work on so hopefully I can live up to your expectations with more relivant content ahead .Cheers .

Hey man, that's fantastic! .I'm legitimately happy for you to have been able to resolve the issue based on some of the intel.from.my video .That's exactly what it's all about .Thanks very much for taking the time to let me know ,you made my day .Cheers and safe riding ahead .

@@TRyanLearnBikes Damn. I really don't like to use lock tight on screws. But I think I will change my mind for these. :)

I am the same ,locktite has its place but I typically use it spareingly. But I also had some loose bits in the power valve and figured I should make sure that does'nt happen again before it makes a real mess of things .Thanks for the great comment @@EarthSurferUSA

Ha ha ...thanks man I really appreciate your great comment. It means alot that you liked it and actually took the time to comment so very kindly. Cheers to you good sir 🍻

Hey Martin ,thank you very much for the great comment. I genuinely appreciate you taking time to respond. Glad the video helped you, too.Cheers my friend

Hey thanks very much Andrew .I really appreciate you taking the time to watch my feeble efforts. I know you are a wildly busy guy so every moment counts .Also thanks very much for taking the time to comment. It means a lot ,cheers, my friend

Thank you very much .Your kind comment made my day and gives me motivation to try'an create more videos .Cheers my friend

Hi Mat .Thanks very much for your great comment and also subscribing. I genuinely appreciate it. Cheers 🍻

Hey Thats great 👍 Thanks very much. I truly appreciate it. Good luck with the top end work ahead. I'm sure you'll do fine .Cheers to you good sir 🍻

My pleasure Arnold .I'm glad it was of some help .Thanks for taking the time to watch and leave such a great comment. Cheers 🍻

Jeez man ,thanks very much .Your comments carry a lot of weight because you actually understand what it takes to wear all of the hats required to play the RU-vid game. It makes me ask the question, why do we put the time and effort into making video's .I'm legitimately curious to hear your answer. You have a lot of subs and what looks to be a growing channel. What is your motivation? What's the end goal?

@@TRyanLearnBikes appreciate that.! To answer your question it’s 2 parts. 1. I always searched RU-vid when I needed help. I would find a video that seemed to cover all bases. And then when I got in to the job, I found out all the hard parts were skipped. Or actual angles that were helpful were not shown. I hated they made it look easy when it was actually not. So I wanted real information. I wanted to show someone what it actually took to accomplish a job from start to finish. All parts. Hard parts included. Real truth. 2. I love it. I always wanted to be an actor as a kid. Now I get to write, star, produce and create all my own stuff. Whatever I want. Guns, cars, family stuff, bikes, whatever I want. My way. I film family vacations, put them on RU-vid, and set them to private so they can be watched forever. It’s an opportunity to capture and catalog memories for a lifetime. So one day my kids can look back, and say “That was my dad”. I wish my father had filmed his crazy adventures. And his over 100 cars and over 70 motorcycles he owned. I’d love to see it. I know that was long winded. But that’s a short summary. 💪🏼

@Link’s Garage Your words resonate with me 100%. Part 1 , precisely, help other people with videos that show the whole process, no crap ,no making it look easy when it's not , no important stuff missing, just facts with views you can actually see . Part 2 .This is where the heart of it resides. Those private videos capturing memories for your kids .You figured out a brilliant way to capture and store moments and memories on youtubes dime .A free library your kids ,grandkids and future generations can access .No more lost photos in shoeboxes that fade over time .We think alike .I've done the same thing . Your dad sounds like an amazing guy. Hopefully you have at least a few faded photos in some old shoe boxes of some of his bikes and cars and adventures. One thing is for sure ..you're a good man.

@@TRyanLearnBikes hell yea brother. Maybe one day we collaborate. Could be legendary. Cheers brother. 🍻

@Link’s Garage Sounds good, cheers my friend 🍻

Thanks very much Pete .I genuinely appreciate you watching and taking the time to leave such a great comment. Cheers 🍻

Very much appreciate your positive words and support .I value your opinions because you actually live and thrive in the youtube game .Cheers my friend

@@TRyanLearnBikes cheers sir! 🍻

Thank you very much, Microsoft teams .I appreciate you taking the time to watch and leave such a positive comment. Cheers 🍻

Thanks for the great comment .Cheers to you good sir.

What year model is the bike in the video? My 2001 yz250 didnt have a "external linkage spacer", also the drawing in the manual didn't show one.@@TRyanLearnBikes

@leelafarlett3535 Hi Lee ..the bike in the video is a 2005 .Yes your bike may very well not have that particular spacer .I have noticed slight variances between certain year machines. Thats why it's always a good idea to consult the manual like you did .

Got mine together, and the main valve opens easily. After its' all the way open, the other two begin to open, and I feel tension from the spring as they open. Is that the way its supposed to work? @@TRyanLearnBikes

Hey Lee it sounds like you've got it set up right .There is bit of a lag in timing between the main valve and the two side valves and a noticeable increase in tension when fully open .As long as everyting moves freely without any notchey stiffness you should be good to go . If you get a chance keep me posted when you get it all put back together and running I'd be curious to hear how great your bike is running after you go for the first ride .Good luck ahead I'm sure it will run beautifully . @@leelafarlett3535

Hey RodKris ,I genuinely appreciate your encouraging comments, my friend .It really means a lot to me and makes a huge impact on motivation to continue creating. Cheers to you good sir 🍻

Hey Damir I can't thank you enough for your kind remarks . You made my day . I truly appreciate the fact that you took the time to watch ,comment and subscribe .Cheers to you my friend !

You are very welcome. Thanks for the great comment. Cheers 🍻

Hi Miguel .Thank you very much .I really appreciate you watching and taking the time to comment so kindly. Cheers to you my friend 🍻

Ahh, yes, Tim ,good point .I will definitely add that concept to my next endeavor. Thanks for watching and taking the time to comment. Cheers 🍻

Hey Eric, thanks very much. I really appreciate the kind words. Cheers 🍻

Keep up the good work Godbless

My pleasure. Glad to have been able to help you out. Thanks for watching and taking the time to comment so kindly. Cheers 🍻

Hey Robert, Thanks very much for watching and taking the time to leave me such a great comment .Also for reminding how much I enjoy pancakes and maple syrup. I'm going to go have a stack of them right now .Cheers man🍺

@@TRyanLearnBikes funny shit!...I'm balls deep in a 2005 yz 250 off road build, this yz is my second, the first was a track specific ride, this one has an Eric Gorr BB, smart carb, WR trans, HInson, 18" rear, SSS fork. I did a refresh some 15 hours ago but had a failure when the PV linkage spring broke and somehow the fragment made it's way into the cylinder. Have you ever heard of this ? Any way we are 8 hours away from fueling up and kicking!!! Overall I'm super happy with decision to focus on trail riding, for 50 yrs I've only really road tracks, this has been enlighting! Thanks again for the superb edit/instruction, well done brother! enjoy the CAKES!

@Robert White Hey Robert ,Holy moly man you are into some serious bike building. No I have never heard of the same issue you experienced with bits fragmenting into your engine ....thats sounds like some wild stuff going on there ,yikes. You mention many years of track riding and now focusing more on trails ..You are obviously a well schooled rider with heaps of experience. You would have a massive audience interested in what you're riding and building if you ever decided to record it and put it on youtube. I would definitely follow your channel. I really appreciate you watching my video and commenting so positively. Cheers my friend and enjoy many more years of riding and maybe record some of your bike adventures if you get a chance.🍻

@@TRyanLearnBikes I appreciate that encouragement. I see the committment that guys like you have and for myself right now I'm lucky to have an afternoon to go ride the thing... I do have cameras and mounts... but sadly have never used them, for fear of the ensuing rabbit hole 😂Keep the edits coming, everyone has their niche but you've figured out some key componets to a successful/entertaining tutorial.

@Robert White I certainly understand Robert ,time is the elusive element and riding is way more fun than messing around filming and editing. The RU-vid game can definitely be a demanding rabbit hole to navigate. Thanks again for watching and commenting so kindly. Cheers 🍻

Cheers J.B. 🍻

Thank you Jakub .Glad you liked the video. Cheers 🍻

Hey Doug that is a really good question .I don't see an option to adjust anywhere in the linkage .But this question must have come up with someone else doing a similar modification .I will be heading to a fantastic bike shop this week .I'm good friends with the mechanics on site and will pose that question to them .If anyone knows the right answer ,its these guys ,they have decades of old school experience .If they can give us any solid intel on this question I will certainly let you know what they say .Thanks very much for watching and taking the time to comment with intelligent interesting thoughts .Cheers to you good sir .

Well it may be a good idea to confirm that your particular year of bike actually had that spacer .A quick look at a parts diagram would help you with that .Your local Yamaha dealer should be able to provide you with it ..As far as the actual dimensions I'm not sure as it's in my bike right now .Let me know if you have trouble finding out the info required and I'll check with my shop here in Ontario to see if we can get it sorted for you .

Hey Mathew, it's not uncommon to have a little bit of black oily goo drip out of the vent line .Depending on your fuel mixture and how well.your bike is running can be factors on the consistency and amount of oily discharge. Over time it gets pretty messy and sticky inside the power valve compartment and is well worth cleaning it up every once in a while to get maximum performance out of your engine.

You have a great eye for detail .I wondered about those wear marks too.The bike was previously owned by an avid racer who I'm sure rode it hard for a few years .It had an overbore when I got it and Ive since replaced that with a new jug .The power valve components are likely all original parts .I really dont know why there was heavy wear near the pully slot as you mentioned . Thanks for watching and your great comment . Cheers to you good sir .

Hey ascended Lion I truly appreciate you promoting my channel in such a kind way . It really feels fantastic to be recognized in such a positive light .The thought of receiving donations or any kind of compensation for helping out the motorcycle community is interesting, but not necessary at all its genuinely my pleasure just to help people out .Thank you so much for your support and making my day .Cheers good sir 🍺

Well Benny ....that little easter egg is not a stock option .I'm impressed you actually spotted it .Not many have . It was a nod to two of my grandkids .The thought prossess was ,if by chance they ever were to watch any of grampas videos 30 years from now ,and they found their cameo ,they would know I was always thinking of them . Thanks for watching and taking the time to comment I truly appreciate it .Cheers

thank YOU for sharing all the knowledge@@TRyanLearnBikes

@@bennymac1731 Hey man its my pleasure we're all in this together ,just try'n to have fun on our motorcycles .Cheers .

I'm unsure of the actual dimensions. That would be best determined through a Yamaha parts dealer .

Ahh yes ...That is a beauty of a machine.

@@TRyanLearnBikes ive got as you see the picture, Kawasaki kx 250f 04(same as suzuki) flat track with rm 250 06 engine, 80% of swap has done (hardpart) chain line is perfect needs 2.8mm washer on left side and 5mm right. Fuel tank bottom needs to pushed in 2cm to get spark plug clearance, cyl head bracket on (frame) 90° turned back so you can remove engine without undo head. There is video about it if you want see😅 ive be the first one to do this

@KawasakiMotoX2T Wow ...now thats pretty cool .I will definitely check that out .No matter how you slice it that is a ton of work.

Cheers 🍻

@@TRyanLearnBikes I repair an old Yamaha DT200r and have big problem with YPVS servomotor and I was very curious how it works on the YZ's without all these extra parts.(battery,servomotor,cables). The first video I saw was yours and it is AWESOME! I don't need anything more. Cheers to you too!

@MegaEnduras Good to hear , I'm glad you have it all sorted now .Enjoy and ride safely, my friend .

Cheers 🍺

There is only one oil seal where that shaft slides in on this particular model .Hopefully, this helps.

@@TRyanLearnBikes Yes this helps I appreciate it. My bike is a YZ250 01 model and I think the tusk gasket set comes with two of those seals, it's why I asked about that but thanks for the reply, feedback like this is always useful.

Thats great Mario I'm glad to help in any way I can .The 01 YZ250's are great bikes I know you will have a fantastic time riding that machine . Have fun and ride safe .Cheers @@marioguzman9290

@@TRyanLearnBikes Thank you brother, Greetings from Las Vegas Nevada USA!

@@marioguzman9290 Las Vegas Nevada ...very cool. Must be great riding territory out there. Cheers 🍻 my friend