1:11

[@lancetarrant8342]

No bullet, no seal driver, no getting sucked in to all the costly gimmicks. Real man. Good stuff.

[@UpAllNight91]

Thanks!

[@patrickb.mxer2184]

I know this gentleman personally. And trust me his suspension settings are on point. That Mobile 1 fluid is awesome.

[@petergriffin4629]

What a great time to live in, where we can get info like that so easily and for free

[@UpAllNight91]

Thanks!

[@blairbrown4267]

And yet some of these kids! Haha, Damn I'm getting old. I remember tracking down a service manual in the 90's was an accomplishment. And kiddo's I mean the physical copy. No googling it. Love this channel, quick to the point. I can skim to knock the cobwebs out.

[@UpAllNight91]

LoL. Yeah. Its at our fingertips these days for sure

[@leebaer1920]

Best one of these I've seen. To the point, nothing extra, and some great tips. Using this one for my first ever fork servicing.

[@UpAllNight91]

Glad to hear!

[@danstocksick]

Just wanted to say thank you for the highly detailed video. Used it to service my Yamaha forks today. First time servicing any forks and it was a breeze following along. Thanks for the time to put out these videos. I've subscribed and watched several others you have.

[@UpAllNight91]

Ahh man, that's awesome to hear. Honestly it makes me smiles when I here this. Glad it helped and welcome aboard!

[@andrewchristie8901]

Great, simple, informative videos. No wasted time. No self promotion. Used these to service my own. Only needed to refer to manual for oil volumes.

[@UpAllNight91]

Nice! Glad to hear it helped! Thanks for watching!

[@duffwarnock8240]

Great video. I've been out of riding for 20 years and KZbin sure helps. I think my 26 rm 250 was the first twin chamber way back, and I had no idea how to service it. This video made today's oil changes easy. I also really like your suspension tuning videos. Thank you!

[@UpAllNight91]

26 RM250? or 1996 I think you meant. I think the first year was 1993 on the RM125. Then later the RM250 got them. I'm glad to hear the video helped! Thanks for reaching out. Ohh the suspension tuning videos. They where some of my early ones and kinda long but I really wanted to put every thing in there that I had to share on that. Thanks for reaching out, nice to hear when these actually got you through the job!

[@duffwarnock8240]

My thumbs don't type well. Yes my old 96 RM250. And yes the suspensions tuning videos. They took a while to watch but are very helpful. I kind of new a lot of it, but it is good to get a refresher and confirm what I thought. I like the order of adjustments to get the bike correct. I basically followed that with my 2019 YZ250fx. Cheers.@@UpAllNight91

[@UpAllNight91]

@@duffwarnock8240 Ahh right on! Glad it helped! No worries on the thumbs😁. Mine are getting sloppier and sloppier with age lol. Plus I try to type as fast as I can talk and it just doesnt worjk out well lol

[@REMSTA777]

your one of the best mechanic's on here

[@UpAllNight91]

Thanks man!

[@UpAllNight91]

Thanks man!

[@autumndanielh2173]

W2​@@UpAllNight91

[@pucha97]

Just did my suspension following all your instructions. Good, clear video!

[@UpAllNight91]

Nice! Glad to hear that! Good job!

[@MVPever]

I join the others in saying that this is a well done, pleasant to watch tutorial. I love the fact that it shows how to do it properly without many special tools. I'd like to add that a reputable suspension specialist once told me that, when replacing the seals, it is a good idea to inspect the stenchions and to smoothen possible imperfections. That should be done using some 1000 grit wet sandpaper, moved in a specific way which is shown in other videos I've watched, basically rotating the stenchion left and right while moving the sandpaper axially, in order to leave a texture which helps the retention of oil by the seal lip. I work in a mechanical company and I've measured metal surfaces after having done something similar and the diameter doesn't look smaller with a micrometer accurate to the hundredth of a millimiter, therefore it shouldn't affect the preload of the lip of an oil seal on the surface and it shouldn't remove those hard platings that stenchions have. That guy actually did that by default; he did that to some of my stenchions and I've done that, too and I don't know how much it helped, but it didn't look like it created problems. One thing to consider is that I don't see problems in doing that only in case of need when the suspension is on the bike, so it makes sense to skip the procedure. Also, as far as I've understood, the explanation of the bleeding happening @22:02 is that the piston at the end of the rod is a one way valve which dampens rebound when the fork extends and pushes the oil into the compression dampening valve when it compresses. Therefore, I believe that by pushing it into the cartridge it opens the shims of the compression valve, letting the oil flowing past it and reaching the two holes.

[@UpAllNight91]

Hello. Good tip on the cleaning up of the fork tube. I have done that before on bikes that have some mild rust or damage but if the forks are in good shape I usually leave that alone. The piston on the end will block the flow going both way under the pressure of our hands, but it does bleed through slowly. The plastic cup is spring loaded and acts like a shock reservoir and at the end of the chamber bleeding when the inner chamber is fully compresses its the plastic cup that is pushed up past the two holes and allows the extra fluid to bleed out.

[@dillonjewison596]

Got 65 hours on my SR and fuel pump purring like a kitty 👌

[@kaydendelgado6]

i want to say a huge thanks man! i’ve been DREADING doing my fork seals but ponied up and bought everything to do it when my ‘24 250f’s fork seals decided they weren’t having it anymore. You’re video was an insane help and walked me right through doing it in an hour tops. Love how detailed you are & how you take time to explain and show each process. I went ahead and did the ATF on the outer chambers as well and my forks feel much smoother now, excited to see how long this set of seals last!

[@UpAllNight91]

Your welcome! Glad to hear the video helped and good job getting it done. Nothing beats the feeling of fresh forks

[@frez777]

you are a great teacher. I just wanted to let you know.

[@UpAllNight91]

Ahh thanks for the compliment, and also thanks for watching! Appreciate ya!

[@Travis_125]

Just serviced one fork (my first time) by watching another video but wish I had watched this one first. Both had some good insight but this one seemed more straight forward. Time to clean the fluid off my floor. Messy job.

[@UpAllNight91]

LoL, surely a messy job. Glad to hear the video is of help!

[@floydwilcox2640]

Sorry I didn’t mean to sound so negative. I’ve been doing suspension for 30 years. Here’s a couple tips that may help you. In the center of the fork seal and the dust seal you’ll notice there’s a Ridge there that’s actually called a grease ridge, fill this ridge with grease and apply a light coat of grease to the teflon bushings. This will give you virtually zero drag in your fork with a smoother stroke. 2nd tip, you really should polish the chrome tubes to remove any imperfections. This is done with two light passes with 400 grit emery cloth, then followed up with another round with 600 grit. Everything will work much smoother and last longer. Hope this helps. 👍

[@UpAllNight91]

Thanks. I have noticed oem honda seals come with grease already in them. It surely keeps things smoother when fresh but I often wondered how many hours that will stick around.

[@nightfall_1le575]

My bike with 2.5 hours already has a leaky seal for this reason even brand new bikes Can have imperfections

[@UpAllNight91]

@@nightfall_1le575 I would try cleaning the seals lips first before changing. Often times dirt and junk can get under the lip seal and cause a leak but once cleaned out its all good. The most common cause of that is parking a bike dirty and no cleaning before next ride. The dirt on the fork leg dried up and sticks on the leg. The first time the forks compress on the next ride it pushed the dirt stuck on the fork underneath the seals lip. And like a windshield wiper with a leaf under it, it lets stuff buy. But if you clean the seal they will usually seal right back up

[@troutzoolamontanaflyfishin490]

man really informative video with great attention to detail. I feel like I'm competent to service the forks on our yamaha's now with the manual. Manuals lack slight details often in my opinion.

[@UpAllNight91]

Thanks! Yes I agree the manual does leave a lot out. We almost have to read between the lines lol.

[@paulberak4030]

Thanks for this video!!

[@UpAllNight91]

Yes SIr!

[@tndeere]

GREAT JOB!!! Getting ready to this on my sons YZ125. Believe I'll try the transmission fluid..Have you ever tried the transmission fluid on the older single chamber forks.I have a 2005 KX125 and it goes thru fork seals like crazy..I get the most life out of the O.E.M seals just wonder if the transmission fluid would extend the seal life. Thanks

[@UpAllNight91]

Thanks! I have used ATF fluid on trail bike works that are very simple but not on MX single chamber forks. I imagine it would work but keep in mine most transmission fluid is anywhere from 5w to 7w, depending on the type. I'm sure it can extend the seal life on them as well though,

[@twistymcslide2]

Thanks for your videos man .

[@tannermoore2221]

Wow wish i had found your channel longer ago … ( idk if longer ago is a saying ) man what a blessing this channel is !! A million thanks ! I’m new to your channel so i may have not dug deep enough but was needing to put heavier springs on a 2019 yz125 , you’ve more than covered that! My question is it seems they recommend new valves when you do so.. they offer kits on RM , was considering this but couldn’t find a video from you on that.. i no longer trust anyone else haha .. what are your thoughts? If there is a video I’ll keep looking and I’m sorry for every bit of this … anyway , have blessed day and thank you thank you thank you ! Cheers! - Tanner

[@UpAllNight91]

Hello. Welcome aboard! When you change your springs you don't need to re-valve at all. I know RM recommends this but its just not true. Often times you may need to turn the rebound clicker in maybe a click or two (depending what rates you went with) to hold the stiffer spring back some on rebound but that's about the extent of it. I currently don't have any re-valve videos but I do have a video on changing springs and I also have a suspension series. But the series is one of my first sets of videos and they are kinda long and winded, however they surely cover every aspect on dialing in your suspension and nothing is left out. I do plan on making a shorter version more of a crash course on suspension tuning in the near future. And your very welcome! Thanks for reaching out!

[@fmtnic]

I use ATF in open chamber forks with many years of problem free riding.

[@UpAllNight91]

Right on. I used it in open chamber forks as well for like trail bikes and such. I still use it in my outer chamber on the twin chamber forks. Works great.

[@evo5349]

Good job.

[@twistymcslide2]

Hey Mr UpAllNight91 , guy . LOL . had commented 2 weeks ago ( see below ) . and didn't really go too deep in thanking you. but i really do appreciate your videos . recently lost my mom , and after 20yrs of not riding , got myself a 2022 YZ125 2 or 3 weeks ago just to putz around locally, and blow off some steam . . found your channel , and started watching with plans to do some mods. you really go into great depth , and in a way i can understand and follow the instruction from . and just wanted to elaborate and further say thank you . im sure this channel isn't a big come up , and is more so for education rather than income for you . and that just further makes me thankful because youre doing it with passion and a want to share . if i don't say something , it's not known . and i was raised right , and told if you don't say something, the person doesn't know . . . . so really . thank you , and know people do watch and learn and put the education to practice . just finished re-jetting my bike because from factory they really make it overly rich . and it runs so much better now through the lower/mid range. id not have done the job in as short a time , and confidently without you . i'm down in palm beach ( Jupiter ) if youre ever down this way def mention in a video and maybe i can buy you guy's lunch or something . Brad.

[@UpAllNight91]

Well Hello Brad! Sorry to hear about your mom, I know how life changing that can be. I believe your so right, if we don't say it, its not known. Money cant buy receiving a comment like yours. Its so nice you and people like you are watching these and going out there is putting it to practice. And also finding the connection and entertainment in it. When I first started doing these videos some people told me that it would cause me to have less business because I was basically telling people how to do it themselves. But I believe if you have something you can share and you give it away you will gain much more in return. Doing these videos have been a blessing to me and hearing from you is part of them blessings and I'm thankful for you, your comment, and encouragement. Congrates on the 2022 YZ125! I haven't had the chance to jet a 2022 yet but just from test rides I believe your right, she feels rich. Good top end power though. Do you ever get out and ride some of the tracks? Ever get out to 74MX? Surely would be cool to meet up! Thanks for the comment and thanks for watching, its much appreciated! Chris

[@twistymcslide2]

@@UpAllNight91 sorry for my delayed response, had the flu . but absolutely man , im happy to relay that to you so you KNOW youre works appreciated. im starting to enjoy the bike and dig int it and tune it a bit . little suggestion for the young kid you help with his YZ125. swap the 13T front sprocket to a 14T , and rear go from a 49T to a 48T. that really helped lessen the low end sluggishness by making you rev a bit more , also lessening the overly rich factory jetting , swap the pilot from the factory 75 , to the provided 72 pilot, and use the NYDF needle to the slightly leaner NYEF needle ( also should have been provided with the bike purchase ) and use clip position 2 , with a 2.75 air screw turn out . really livened the bike up for me. if he needs oem parts , id be happy to offer my spares ive replaced , pipe , silencer , clutch and ignition covers , handlebars . id have to look around at what else i have , but i tossed on a Bills pipes MX works pipe and PC kevlar silencer , and man does she sing now. really opened up the mid and top end for me , and the sprocket combo made it have 10% more gear and speed up top . i dnt currently have a way to transport my bike, but if/when i do , id def be down to make the drive up sometime for a weekend and get together . and or if youre ever this way , im more than happy to offer a place to stay for you .

[@twistymcslide2]

@@UpAllNight91 forgot to mention because i haven't installed yet , but i have a wiseco piston , wiseco clutch , GTYR pressure plate , and have gone to T2 fuel , and Motul fluids . was wondering if after his piston install if you had to re-jet because of the increase in compression . i also got the apex head, but waiting till i HAVE to dig into the motor to make use of the parts. but how did you find the suggested APEX jetting , and or did you stray/play with any other jetting to further dial in tuning. new to 2 stroke tuning , and almost nervous to go so deep into the build without experience doing so . i come from the automotive world , but w/o a wideband im anxious , and don't want to toss all these nice new parts into it , and mess up .

[@UpAllNight91]

@@twistymcslide2 holy cow u got to work on that thing! Where did you find a bills pipe? I thought they went out of business! Maybe post a video up of your bike I would like to see it in action. I will check with them and see if they have the jetting that came in the bag with the bike. If not I will probably order that up and try that out on his 2022. Sounds like you did all the hard work I just gotta plug it in!

[@UpAllNight91]

@@twistymcslide2 the wiseco piston actually has the same compression ratio so your good there. Ita plug and play. I found the apex jetting tips on apex website, but honestly all the apex needs over the stock head is usually just dropping the main jet one size. Its really because the squishband is tighter on the apex. Tighter squishbands are more efficient and usually requires slightly less fuel. Yeah you gotta get a way to transport your bike. A cheap truck or a trailer on a car or something. So many places to ride if you can get it there. Plus here in Florida we have FTR races. Them are some of the coolest really

[@XsoupX]

This video is awesome

[@UpAllNight91]

Thanks!

[@ahouserat7137]

This really helped me thanks man

[@rezkidgamingyt4725]

My 2023 wr250f has got 145 hours on it now , the seals are all good mo leaks yet lol I need to change the fluids soon .

[@UpAllNight91]

Yeah if the seals are good, fluid change alone is good.

[@Revelation22_5]

Next bike build I do. I’ll send you a list of what I’m doing so you can plan videos around it lol. Love all the videos but they are a few months behind when I did the same to my bike.

[@UpAllNight91]

Ahh man lol

[@billb295]

Great vid thanks

[@UpAllNight91]

Thanks and your welcome!

[@paulgrimaldi8145]

Awesome

[@TheXRDD]

Thanks for the video, what’s different about the 2005 yz125 forks over the 2006?

[@UpAllNight91]

Your welcome. The 2005 to 2006 forks are constructed about the same, both twin chamber forks. But the 2006 was vastly improved in the valving area and are easier to dial in.

[@TheSunnyTrails]

Man you give me the confidence to give this a go. I’ve heard that you have to drill a hole somewhere to prevent a part of the shock blowing up? The mechanic (definitely trusted) that gave me advice told me there’s a modification you have to do if it’s not already done and you have to drill a hole? Does this make sense? Thanks for your help

[@UpAllNight91]

Hello. There is nothing wrong with drilling the hole in the ICS cup (or whatever thats thing is called). I will say I have only ever seen one break on my own bikes and it was years ago. And in my opinion its caused by two things. Not pressing the inner chamber down all the way after bleeding it, to push the extra fluid out. And if the bike is laid on its side and left there for a long time. The newer (4 strokes) bikes come with this hole in there already but the 2 strokes didnt get this will 2022.

[@paisamx7266]

I got to talk you, thank you for doing this really helps a lot, are you going to teach us how to do suspension settings for our weight (front and rear) I want to Learn more about the rebound clicker

[@UpAllNight91]

Hello. Thanks for watching. Yes I made a suspension and chassis series about a year ago that covers all aspects of suspension tuning. It's long and tedious but I tried to put everything in it that I have to give. Here is a link to the Playlist kzbin.info/aero/PLyockiXvbg8G4nEIuCtfJg6TnmvQ6NoAC

[@suntzuwarsword1964]

Thank you

[@ofnboyusa]

Great video !!! Keep up the great work ! Now do a showa 😂

[@UpAllNight91]

Thanks! And dude your right I gotta get some showas front and center. Soon

[@MatiasBuffa-c3x]

Thank you very much for such an awesome video buddy!! i have two questions to ask you...1- I have a 2018 YAMAHA WR450F and i want to learn how to service the suspensions sistems, do you know if the suspension for YZ and WR are the same? i´m asking this to get the correct oil and dust seals. 2- can you share the Part numbers of each component if they´re the same? thank you very much!! greetings from argentina!!!

[@UpAllNight91]

Hello Matias Buffa from Argentina! Yes the WR450F has the same forks and shock and the steps to service them are the same. Here is a link to your fork service kit from yamaha www.partzilla.com/product/yamaha/B29-W003B-00-00?ref=b04ae2b07c6c2a758919dfcb9f481f1ccf408968

[@nathansylvester1715]

Would you consider doing a video on installing the gold valves on forks and shock on the 2010-13 era yz450f?

[@UpAllNight91]

Hello. I dont do gold valves very often but every so often. Next one that comes through I do plan to put a video together on it.

[@falashlaba20]

Damn this is sick. Thanks so much. I'm about to do mine and this is going to make the job so much less stressful. I just have one question. When you take apart the outer casings (i think that's what you call them( 7:50)) and take them outside to get them cleaned up. What do you mean exactly? you spray them in water? break cleaner? no one mentions it and I don't want to ruin mine doing a stupid mistake. Hopefully you answer before next wednesday because that's when I'll service mine. Cheers

[@UpAllNight91]

Hello. What i do is use WD40, spray all in them and out. Then I use high pressure air from a air compressor with a air nozzle and shoot air into them and all around them to blast the WD40 and trash out and off. If you don't have a air compressor then brake cleaner works well and won't hurt anything. Just spray them out and clean then let them air dry and it should be good

[@falashlaba20]

@@UpAllNight91 Thanks for the response. Very appreciated. I have one more question, feel free to never reply that's all good... So I changed my sels and the fluids, but during the step where we pump it one last time for good measure, and then proceed to push the cylinder all the way in with the hole facing up, my forks let out air and spurted. It had me a little alarmed cause I saw yours didn't seem to release air... Then when I read the manual to find the amount of oil I had to put in, I saw that yamaha said to not push the cylinder all the way down because that would let air in....So now i'm wondering, do you think I let air in the system? When you said to push it all the way down, did you mean ALL the way down, or all the way down to the 1 inch from the bottom? Thanks alot. I enjoyed serviving my forks becaus eof your video. Made it easy and stressless.

[@UpAllNight91]

@@falashlaba20 yes with the lock nut still on the shaft, twisted all the way toward the body of the chamber by hand. I press all the way down on final bleeding. You will hear the last bit of air spit out. Thats normal. But if you don't do that then the first time you bottom the bike out the inner chamber will spit the extra fluid into the outer chamber. And then you will have more fluid in the outer chamber than you anticipated. This is why I do it before putting them back in. Yamaha manual has been funky in the area of the forks since SSS came out in 2006. In 2006 they had people doing them all wrong and I had to learn the hard way what was the right way.

[@UpAllNight91]

@@falashlaba20 and when yamaha says it would let air in. Well. All you gotta do is stroke it after fully compressing and you will hear there is no air in there. Its bleed well

[@falashlaba20]

@@UpAllNight91 oh i see. thanks for the quick response and thanks again for the valuable knowledge you share. Super grateful.

[@Dylan.lawrence]

How often would you recommend to change bushings?

[@UpAllNight91]

I like to change them out when I change out the seals, but its not always necessary. They actually last a long time if the fluid is kept good and clean. Hard to put a hour number on when they should be replaced though, as it just depends on how well service has been kept up and how hard the rider rides the bike.

[@itssoferny9966]

What oil do you recommend to use I’m 180lbs idk if that helps but I noticed there’s different numbered oil for the forks, I got a 05 Yamaha yz450f

[@UpAllNight91]

Hello. For the 2005 YZ450f its recommended to use Yamaha 01 fork fluid. Thats the OEM stuff for them 2005 forks. Heres a link to the stuff www.partzilla.com/product/yamaha/90793-38044-00?gad_source=1&gclid=CjwKCAiA5L2tBhBTEiwAdSxJXzP4HZYQxUAmTP3OiAiVub-9r-4QK4oU6a6cEZDwKh7ocl-SjaK2sRoCBq4QAvD_BwE

[@itssoferny9966]

@@UpAllNight91 thanks for the reply ⚡️

[@UpAllNight91]

Yes sir! ​@@itssoferny9966

[@markcummings6265]

Thanks for this vid. I’m acrtually excited to do my forks. However I have a WR250F. Are they the same ?

[@UpAllNight91]

Hello. If your wr has twin chamber KYB forks like the ones in the video then yes. You can compare the fork caps, if they look like the caps in the ones in the video then yes this will get you through it

[@igorribeiro3947]

hello, good evening, I would like to find only this white piece that is on the upper valve of the suspension.I'm just finding the complete valve The video was excellent congratulations

[@UpAllNight91]

Hello. Someone use to sell a aluminum one for cheaper but I can remember who. I would try calling race tech, enzo suspension and others,

[@petergriffin4629]

Do you have any advice for which kind of automatic transmission oil to use? I am from Germany and they don't sell the exact oil you were using there here. So i tried to find something similar

[@UpAllNight91]

Hello. I would look for a good synthetic ATF.

[@mc9304]

Do you think it’s possible to adjust the outer chamber oil level by only removing the rebound side of the fork? Let’s say I want to remove 20cc of oil? Thanks for all the awesome videos

[@UpAllNight91]

Hello. you can but the risk is dirt that hides down and around the rebound adjuster on the bottom may find its way into the fork. If I was looking to remove fluid without opening the forks I would use the bleeder up top. You would have to remove the forks off the bike, remove the bleeder screw up top and then flip the fork up side down. Compress the fork a inch or so and it will come squirting out the bleeder hole.

[@mc9304]

@@UpAllNight91 this worked great!! Thank you

[@UpAllNight91]

@@mc9304 Nice!!!

[@thomaspham8852]

I followed the steps exactly for the inner fork seals. After getting one bleed and filled, air is still leaking in the inner chamber and causes the rod to get sucked back in. Do you think that the inner piston seals need to be replaced? Can I just get the ZETA aftermarket part instead of replacing each individual O ring?

[@UpAllNight91]

Depends where its leaking from. I find some like to leak from the bottom little 0 ring seal. The top o ring seals usually hold up. Its mainly the bottom one I see go bad and leak

[@billysantiago1251]

Question about forks? What forks (from other YZs) are compatible with a '20 YZ250fx?

[@UpAllNight91]

Hello. Honestly I dont really know. I dont do many conversions. I would ask around thumpertalk some, theres gotta be someone in there that has gone down this rabbit hole.

[@energyefficient2247]

Is there any way to just add oil, if it leaked around a seal that must of cleared the debris that was making it leak, and isn't leaking anymore.

[@UpAllNight91]

Yes, you can open the top of the forks and add oil directly in. You can also open the bleeder screw, compress the fork a little and then as you slowly let the fork come back up you can add fluid into the bleeder hole. But the question is, how much was lost and how much needs to be replaced. We may never know. So the right way to do it is to open the top of the forks, dump the fluid out of the outer chamber, then refill each fork tubes outer chamber to the correct volume.

[@lainesnaychuk2719]

I just discovered my fork seals to be leaking on my 2023 250, and i ended up finding the culprit, i have a few gouges on my lower tube, im 90 percent sure the gouges ripped my seal, my question is, how would i go about smoothening out the tube or do i just have to replace it?

[@UpAllNight91]

Hello. Bummer on such a new bike. On such a new bike I would just replace that lower fork leg but sometimes they can be repaired. I have used files, steal wool, you name it. Every repair is different. But I would suggest just a new lower fork tube since the bike is newer and kinda worth it.

[@mrhan4657]

What SAE is the mobil1 ATF?

[@UpAllNight91]

If I remember correctly its like 7w

[@johnnywilhite966]

I'm having a hard time finding mobil synthetic would any synthetic atf work ??

[@UpAllNight91]

Hell9. I imagine it would. I too have been having a hard time finding mobil. I had to order a case of it off ebay.

[@EMotoGuyyy]

Hey I have some forks for a yz250 but it’s an 89. Do you think I could base things off this video? Has it really changed that much? Also when I compress my forks they are smooth and frictionless but jump up like a pogo stick and when I shake them I think I can hear the springs. Do you reckon I just need all around oil inside and outside and possibly new seals? No clue how many hours, owners, or anything. Bought the bike a few weeks ago.

[@UpAllNight91]

Hello. The 1989 forks are totally different. No inner and outer chamber, just one chamber for all the fluid. If they are bouncing they will probably already lost most of their fluid from seal leaks. I would just take them down and replace the seals, then use fresh fluid. These forks are totally different than the ones in the video. Theres gotta be a video on these somewhere though if you search youtube I would think

[@EMotoGuyyy]

@@UpAllNight91 okay thank you man

[@UpAllNight91]

@@EMotoGuyyy Yes sir!

[@TylerisBossy]

my seal leaked a solid amount of oil due to dirt, you recommend doing outer and inner chamber or just the outer. thanks !! im lazy btw hahaaaa

[@UpAllNight91]

LoL. Well its best to do both chambers if you are already in there. But if the outer is not to dirty and your OK with it then doing only the outer will do.

[@ametonur8012]

Hi, my compression holder nut is spinning without coming out, i dont have an impact tool. Any idea how can i thake this nut out? Thnxs

[@UpAllNight91]

Are these not 2006 to current forks?

[@dangerousdan5079]

What size is that tool you used for the cap nut I’m wanting to do mine on my 2016 but not sure if it’s 48mm

[@UpAllNight91]

Hello. Its a 49mm. here is a link to one... www.rockymountainatvmc.com/parts/tusk-kyb-dual-chamber-fork-cap-wrench-p

[@dangerousdan5079]

@@UpAllNight91 thanks appreciate it👍🏻👍🏻

[@UpAllNight91]

@@dangerousdan5079 Yes sir!

[@hypefxx9011]

For the oil seals which way faces up?

[@UpAllNight91]

The outer edge (otter diameters)of the seal has a fatter side. The fatter side goes up.

[@calebrobb4292]

So would it be different for the older models for example 2002??

[@UpAllNight91]

Hello. Yes it different than the 2002. Mainly due to these having a inner chamber, two chamber design

[@lancesmeal8853]

Im doing a set of 08 yz250 forks... following ur video to bleed etc... problem isi have fluid flowing down the damper rod as i cycle it ... question is.. is there a seal between the damper rod n outter chamber? (I have damper rod out n looking but cant tell whats exactly in there)

[@UpAllNight91]

Hello. If the damper rod is leaking from the shaft area that slides in and out of the damper assembly you could have a damper assembly seal leak. Is that where its leaking from?

[@lancesmeal8853]

​@UpAllNight91 wish I could send a pic.... but im thinking you got it.. Main body of inner chamber, rod out the bottom w threaded end, rod goes up n down in main body.. is there a seal in the main body to seal to the damper rod ? Do you know a part number ? I picked at what I thought was an o-ring but nothing seemed to move.. maybe o-ring is very hard from time ?

[@UpAllNight91]

@@lancesmeal8853 Hello. They can be purchased from this link right here www.teknikmotorsport.com/ Its called a fork cartridge seal. There are others who sell it as well. Just plug in your bike make and model and click on fork cartridge parts to find the seal.

[@lancesmeal8853]

​@@UpAllNight91awesome thanks...

[@UpAllNight91]

@@lancesmeal8853 Yes sir!

[@Jordangilps617]

hey hoping you can help as this has happened twice to me. The dampening rod stripped off completely on the bottom of the fork where the adjuster nut goes on. Thinking I have a bogus torque wrench that is searing off the rod but maybe its something else?

[@UpAllNight91]

Oh man thats expensive too. Are you bottoming out the adjuster nut on the dampening rod first and then locking down the locking nut? If so the only other thing I can think of is its just being put on too tight. I don't know the torque specs for this but there are places on these bikes that the torque specs are either too little or too much in my experience and opinion. Areas like this I go by feel. With a big torque wrench its hard to tell when you are going past the point of what the treads can handle. I use just a 3/8th ratchet or a wrench and lock them down by feel just like I did in the video.

[@Jordangilps617]

@@UpAllNight91 yeah I figure the torque is over tightening and also doesn’t help I bought a harbor freight torque wrench lol. Thanks for the help man happy riding!

[@UpAllNight91]

@@Jordangilps617 thanks man, you too!

[@barkeep25]

Hey man, going to do my yearly suspension service in about a month and I noticed you had a video on that as well. Question, when I fill the inner chamber and bleed it I test it by pushing the rod in and letting it extend by itself all the way out. But where it stops is almost all the way, if I tug it it can extend about a 1/2" further. Is that normal, both forks did it and I tried multiple times too (wasted a bit of oil, was just maxima though) but still could pull it a little. I was led to believe that means it s still has air inside. Didn't see you test it that way. Is that normal or is there some sorta seal inside that I need to replace?

[@UpAllNight91]

Hello. Yeah it won't extend all the way on its own most times, perfectly bleed and all. Its mainly because the spring on inner chamber is pretty relaxed when fully extended. That spring acts like the nitrogen pressure of a shock. But is normal. If there is air in there you will hear it when stroking it, and thats usually the giveaway.

[@barkeep25]

@@UpAllNight91 wow, thanks man!

[@matthewbaer4139]

are the steps the same for a service on yz125 forks

[@UpAllNight91]

Yes they sre

[@kubamx2676]

hello how much oil for my Kx250 2022 Fork Kyb

[@UpAllNight91]

Hello. If you plug in your make and model on racetechs site they have all this information. Here is a link to it racetech.com/product-search/

[@QuintonSanders-l9b]

What size pvc pipe did you use ?

[@UpAllNight91]

outer diameter measures about 2-1/4"

[@nsn2vu]

Yeah cooking oil sounds right. Olive green 😂😂 thanks for the great video

[@UpAllNight91]

😅 Thanks!👍

[@jamesguimond4911]

What did you use to clean it with?

[@UpAllNight91]

I just wd40. And blow it off and out, wipe it clean and thats good enough for me. I try to avoid harsh cleaners like break cleaner and such. Wd40 does well, just try your best to get it all out and dry for the most part

[@jojokarli]

2006-2023 I have a yz125 2005 what would I have to do differently 🤙🏻

[@UpAllNight91]

Really nothing. 2005 is pretty much like 2006 to current in terms of servicing. You should be good

[@jojokarli]

Ah good I was getting a bit worried you’re videos are the only ones that make sense 😂

[@tinustrabas157]

Where i can buy the seal kit,tankyou

[@UpAllNight91]

Hello. There are many places on line to order the seals and such. Here is a link to a video on ordering the parts you need. kzbin.info/www/bejne/qZ2yl3qFgramntU

[@realworldoffroad7691]

Alright Lets get SHARTED lol

[@UpAllNight91]

Hahaha! You caught that! LoL

[@augieh6146]

What’s the name of that fork tool?

[@UpAllNight91]

KYB Dual Chamber Fork Cap Wrench, here is a link www.rockymountainatvmc.com/parts/tusk-kyb-dual-chamber-fork-cap-wrench-p

[@augieh6146]

@@UpAllNight91 dude thank you. I’m attempting this with a buddy we’re both confident. I need to buy the tools, seals, oil. Hoping no “rebuild”. Got told 240 labor plus parts and was like no fuck that. Lolololololol

[@UpAllNight91]

@@augieh6146 Crap, yeah 240. I charge 175 for the labor. It can be a little time consuming.

[@augieh6146]

@@UpAllNight91 I wanna support the local guy at the end of the day but was just amazed still lol

[@UpAllNight91]

@@augieh6146 Yeah, and if you can do it on your own, I say do it.

[@augieh6146]

What size pvc for the fork driver? lol

[@UpAllNight91]

LoL. I honestly dont remember. I just found something laying around and cut it to work lol

[@cbsdcc3889]

Good video but, i could do without the "cool guy" comments.

[@UpAllNight91]

Thanks. Not sure I know what cool guy comments means but thanks

[@insertgoodname4809]

Who else cringed when he dragged the hammer across the fork?

[@cbh148]

If it was that easily damaged, it’d be a poor choice for suspension. Same goes for all the exposed hydraulic rams on construction equipment.

[@insertgoodname4809]

@@cbh148 Would you do that to your fork?

[@UpAllNight91]

I do it all the time. If it ever caused any damage I certainly would have stopped a long time ago

[@insertgoodname4809]

@@UpAllNight91 You are a machine abuser. :(

[@floydwilcox2640]

You can certainly tell you’ve never had any professional training in suspension work.

[@UpAllNight91]

I honestly have zero mechanical training. It's just something I have geeked out on since I first felt a yz80 power band

[@igorribeiro3947]

On moto Esporte I'm only finding the complete kit with the codeVALVE COMP. (5XC-2316A-V0-00)but I'm looking to save money I want to buy only the plastic

[@UpAllNight91]

Someone use to make and sell aluminum ones and for cheaper. I cant remember if it was race tech or enzo. But I would call around some of the big suspension guys like that and ask. They are out there just cant remember where.

[@destini573]

So what if you took apart the top 1st got to the bottom and it just spins. 😅 I put a wrench in the top still spins…I’m sure I’ve broken something by now 🫣

[@UpAllNight91]

What part spins? The whole shaft or just the locking nut?

[@destini573]

@@UpAllNight91 so I guess mine is KYB open chamber forks the order model, so my locking nut is on the top and I have to get the special tool to hold the dampener Rod/ or make one. I got one apart…with an impact idk how but I did and didn’t break anything. Waiting on the tool cause I’ll need it to toque it.

[@UpAllNight91]

@@destini573 Ahh, well that explains alot lol. Hope all goes well with it.

[@destini573]

@@UpAllNight91 yea I got it thanks so much for checking!

[@UpAllNight91]

Right on! ​@@destini573

[@QuintonSanders-l9b]

Thank you

[@UpAllNight91]

Your welcome!