Dirt Bike - Valve Adjustment on 04 - 09 Honda CRF250R - see description

[@CoteMotorcycles]

Feel free to get in touch with me on FB if you have any troubleshooting questions! Support the channel and pick up these sick mojomoto parts for your CRF here >>> mojomotosport.com?aff=141

[@abemichau4706]

First how to video that makes sense and doesn’t star some Ronny Mac wanna be. Thanks for the professionalism

[@CoteMotorcycles]

Thanks for the positive comment, it means a lot to me! I hope to make some new vids soooon. Life has kept me off the bikes for a few years now but I'm itching to make some more! Thanks again and hit me with a thumbs up and share if you could!

[@morley3810]

Great camera work and excellent concise description. Thank you!

[@CoteMotorcycles]

Thanks for watching and taking the time to leave a comment; glad you found it useful!

[@algee8228]

Clear & Concise...thanks for making this vid !!

[@21jammer21]

In response to my comment below I see in your valve check video you cover top dead center on compression. Might have been a good idea to let it be known to be sure and watch that video first. Good videos !!

[@21jammer21]

Why didn't you mention top dead center compression stroke as a guide to get things back in place when re installing the cam ? Not to mention cleaning the areas of the bike above the engine so no dirt or debris drops into the motor. Important steps !!

[@CoteMotorcycles]

J Sequeira We assumed people would watch the valve inspection video first and if they didn't they would know (such as yourself) to have the engine at Comp TDC. There's no reason to rotate the engine after the cam is out when doing a valve adjustment. Cleaning the area before getting into the valve cover is a good idea but good maintenance starts at washing your bike after every ride or at least before doing any work. Thanks for the good pointers!

[@mas121473]

Hope this isnt a dumb question.......What would the symptoms be to check valve clearance on a 2004 crf250r? Bike is currently hard to kick start but can be roll started. Thanks

[@CoteMotorcycles]

Not at all. More than likely you will need intake valves. If you have 0 clearance on your intakes the valves are shot and should not simply be adjusted, could cost you a lot more than a couple valves in the future.

[@mas121473]

+CoteMotorcycles thanks !!! I appreciate your reply!

[@walkeristhebaum2078]

Same thing for my 04 crf250r

[@mas121473]

+walkeristhebaum what is your symptons?

[@texastoys5874]

I have a 08 crf250r shop just did valves and cleaned carb has a bad lean condition and is super hard to start if you ritchen it out to run right it is impossible to start does that sound like a valve issue

[@calebjackson9974]

Do you know how to adjust the exhaust valves on this same model?

[@CoteMotorcycles]

Same as the intakes!

[@869BikeLife]

hello .. can you help me?.. do you have to remove the cam chain tensioner screw? or can i remove the whole cam chain tensioner?

[@CoteMotorcycles]

The tensioning screw can't be removed from the tensioner body. Remove the tensioner.

[@glennshawnsmart3061]

Hi I have a 2006 crf250r and it don't want to start my intake valve ok but both of my exhaust out of spec by .10mm on both sides can this be the reason my bike wil not start

[@jessescharf567]

I’ve got a question, so I bought my 2010 crf250r locked up and it came with a pro circuit cam in it and I’m not sure if it’s still the same valve gap or if it’s different. I did the stock gap and it’s not staying running. It only stays running if keep in on the throttle

[@CoteMotorcycles]

I’m betting it’s not your valve clearance. Could be the timing. If your cam chain is stretched or the cam lobes moved a bit you’ll get a condition like you’re describing. Make sure you’re checking clearance on the compression stroke also. Not something goofy like the idle set too low?

[@bisnonnocanapa]

and what if the recorded valve clearence is zero because in the moment of disassembly the valve is touching the cam?

[@CoteMotorcycles]

Unfortunately you'll probably need new valves. The intake valves are notorious for wearing out.

[@CoteMotorcycles]

Also make sure you're on the compression stroke when checking the clearance.

[@stockcar4d]

CoteMotorcycles which is when ….? lol

[@CoteMotorcycles]

Intake valve opens, closes, piston comes up to the top of the head to arrive at TDC.

[@jasonlewis2899]

so should get new valves too huh are they expensive? ¿?

[@PrimeRepair]

Thank you very much, this video helped me alot.

[@tylergray6308]

I would change the name of video. You didn't show how to check clearance with feeler gauge. 🤔 How you got to shim thickness.

[@CoteMotorcycles]

The valve INSPECTION video can be found with a quick search on my channel. This is the ADJUSTMENT procedure.

[@iluvgreenmarkers1]

I retimed my 2007 crf 250r just like this and my engine either does nothing or is backfiring after I give it gas. Do you know if the crank shaft has to rotate 720 degrees for the piston to do a full cycle? Because, is it possible my piston was at bottom dead center when I retimed my bike? Thank you for any help.

[@CoteMotorcycles]

720 is correct. Your piston needs to be at TDC on the compression stroke. Your intake valve will open and then your piston will come up to TDC compression. Use the stator timing mark to make sure you’re at TDC. The second mark on the stator is TDC. Then make sure your cam is lined up.

[@iluvgreenmarkers1]

@@CoteMotorcycles That's what I needed to know. Thank you again. My bike is running now

[@nicholasgunsmoke2285]

anyone know if i could buy cam journals so i wont have to buy a whole new assembly and if so where?

[@Ty-vk5do]

My 2004 crf 250 will not start anymore is it the shims or are the valves shot?

[@julianzimmer9606]

Do you have to use a screwdriver on the chain tensioner? Or can you just unscrew the whole thing?

[@CoteMotorcycles]

You can just unbolt it when removing it but you’ll need to back it off on install or you’ll mess up the chain / cam bearings / chain guide.

[@julianzimmer9606]

@@CoteMotorcycles thanks

[@RadicalRitz66]

On my 05 crf250r the intake is at .004 and the exhaust is at .004. Do I jut need to get new shims for the exhaust?

[@blakevella2762]

Can you remove the cam chain tentioner all together?

[@bradylemons782]

Any idea why when I replaced my left intake valve shim (which was the only one out of spec to begin with), my right intake valve shim is now out of spec?

[@CoteMotorcycles]

Brady Lemons If you don't torque the cam holder bolts properly or get some debris on the shim/bucket ect it can throw your specs out. The only thing that will change the clearance without running it and physically wearing components is human error unfortunately. Hope that helps. Thanks for watching.

[@jasonlewis2899]

Brady Lemons what kind of bike you have?

[@jasonlewis2899]

CoteMotorcycles having valve problems on 98 klx 300r new piston rings and jug but I no what I got!

[@motozack177]

Sorry I did not realize there was another video u could have said something lol but thank u for the help

[@connork.557]

Another question, I am planning on re shimming the valves. Again my clearances were all zero, so if I use the equation given will it still likely work to calculate the appropriate shim sizes? Should I go even smaller than the calculated values as the clearance could be technically less than zero? Or will it just come down to trial and error with shim sizes.. let me know. Thanks!

[@CoteMotorcycles]

You'll have to toss new valves in it and just go with the shims you had before to get a measure. Then you can get exact. Sorry for the late reply! Thanks for watching! Please thumbs up and share!

[@connork.557]

@@CoteMotorcycles no problem, I ended up selling the crf and getting a 08 yzf. That was the solution to the problem. Thanks for the reply!

[@bradystoddard6222]

This is kind of off topic but do you think you could tell me how to take out the exhaust rocker bearing? 03 CRF450R Thanks

[@immenxe-5769]

is it in the service manual?

[@richardhyde6418]

Great Vidya man.....thanks for posting. I think I'm gonna sell my new to me 250R and go back to a smoker.

[@CoteMotorcycles]

Something about that two stroke smoke! Thanks for watching! Please thumbs up and share!

[@tannerking2906]

with new valves do i need shims? pulled a fresh rebuild apart after purchasing to judt check clearnce n exhaust valves have no shims

[@goboardcanada6263]

Tanner King all the valves should have shims on them. The exhaust won't have buckets. You'll need a magnet to get the shim off the valve spring retainer.

[@tannerking2906]

ok exhaust valves had no shims so the guy put bike together screwed it up.Is there a standard size shim i should start with?

[@connork.557]

if your valve is showing zero clearance, does it always need to be replaced?

[@CoteMotorcycles]

If you have stainless steel valves you can probably get away with resetting clearance. With oem titanium valves 0.006” is a lot of material and the hardness of the valve face is completely gone so you’ll only get a few hours of run time until the clearance is gone again. Make sure you clean your air filter EVERY ride and try not to rev the piss out of your motor to keep your valves in spec longer.

[@connork.557]

@@CoteMotorcycles thanks for the reply, I'm assuming my valves are oem. Small chance they arnt because the previous owner didn't take awesome care of it. I'm currently leaning towards selling it and getting a 2 stroke. Thanks again!

[@USERNOTFOUND404.]

how do you know when you need too do a adjustment?

[@chrismids51]

Valves need to be checked on a regular basis. If your back back fires alot or pops and bangs when you let of the throttle then I recommend checking valve clearances straight away. Last thing you want is the piston to hit the valves

[@RIDAAAZCREW]

Thanks for the video! it helped alot! big thumbs up!

[@joet6990]

i have a 2005 honda crf450 and i was told the last owner was riding it for 2 hours and it just stopped working on him and he couldn't kick start it. now i have it and i can hear it has compression, it has spark, new oil and gas. the carburetor could use a cleaning but i even tried starting fluid and nothing worked. pushing it while in gear and pulling in the clutch is almost impossible without the back wheel just being locked and sliding. the last owner said i needed a bottom end rebuild and a few other people said to adjust the valves and check the air intake. any idea on what i should do? i would take it to a shop but i don't have the money.

[@immenxe-5769]

what happened in the end?

[@tombanner01]

yeah how did it go?

[@jetmuchacho]

This is normal honda behavior, just kick it about 100 more times and it should fire right up.

[@richdelgzz]

What shim size should I use if I have zero clearance on initial inspection of the L. Intake valve? Thanks

[@goboardcanada6263]

You need a new valve. Don't bother shimming it.

[@williamjones6751]

i am thinking of buying a 2004 crf250x, is there anyway to tell if the valves are going in while test riding the bike?

[@CoteMotorcycles]

The x's didn't seem to be as bad for chewing through valves. If the bike is hard starting it will be a good indication of a compression issue that may involve the valves. If the seller says he's adjusted the intake valves and has the old valve shims, it's probably going to need valves. Hope that helps and good luck!

[@williamjones6751]

ok i have also watch the piston/rings video as well, could smoking at 1/2- 3/4 throttle indicate a ring replacement?

[@CoteMotorcycles]

Could be. Hard to diagnose over KZbin. Could smoke from a head gasket problem, rings, jetting issues, ect, ect. It's a good idea to do the top end on any used bike purchased for the simple reason of peace of mind. Lots of people lie unfortunately to make a sale. There's lots of good info on forums such as thumper talk you can use to make an informed decision.

[@jasonlewis2899]

CoteMotorcycles well I will know what I got when I get done with shimming the valves maybe new ones?

[@jasonlewis2899]

CoteMotorcycles sounds good thanks for your time and consideration for the first time er but I will find out what to do with this bike hopefully not a headache for me and my buddies!

[@damorodrigo5756]

how often do you have to adjust them

[@jonthelamb4549]

Damo Rodrigo check 1-2 times a season adjust if needed

[@clearyourmind7868]

Hi I just trail ride how often should I adjust my valves

[@bullscustombaitsco1648]

Motocross and 4x4's probly around every 20 to 30 hours if ur not to rough on it or until it gets hard to crank

[@rafaelmichel445]

just watched your video wich is awesome! lots of good info here man thank you! Hey quality wise what s better the kibble white valves or should i sick to the OEM valves from HONDA??

[@immenxe-5769]

stay stock

[@bossbitchlaura4440]

Hey man good video. When I go to do this do i need to get any antifreeze or oil?

[@CoteMotorcycles]

Not for a valve inspection.

[@nuggetyclump5318]

I have 2012 model will this be the same?

[@CoteMotorcycles]

It will be very close. Find the proper service manual (you can find them online for $10 sometimes - well worth it) and then follow the video so the manual makes sense.

[@nuggetyclump5318]

@@CoteMotorcycles Awesome thankyou :)

[@devonbrown34]

Great instructional video. How much free play is allowed on the decompression lever? Mine can wiggle from side to side but still seems to function okay. Have never had any problems kicking it over. I thought it was weird that my exhaust valves were out of spec (0.25mm for the left, which is on the edge of spec and 0.23mm on the right) and not my intake valves (.09mm for both left and right). Could free play in my decompression lever be wearing that right exhaust valve down quicker since it is on that side? Any suggestions? Thanks!

[@CoteMotorcycles]

Doubtful the decompression lever has anything to do with your valve clearance changing. It has no effect on anything once the motor is running. The exhaust clearances usually move around due to carbon deposits ect. Double check your manual or the Google for decompressor clearance. Thanks for watching.

[@pdheffler6944]

excellent video

[@CoteMotorcycles]

Thank you sir!

[@retrosjordan7816]

Hey man I need help with my crf250r 2006

[@CoteMotorcycles]

Look me up on Facebook and I’ll see what I can do!

[@williamrobinson6380]

How long did this whole process take

[@immenxe-5769]

roughly and hour and a bit probs

[@joshsizemore3986]

Five minutes and fifty two seconds

[@JohnnyG87]

kick-ass intro

[@brandonrides]

My intro was a Popeyes ad

[@chrissuggs8521]

Yeah I won’t be trying to do this. I’m not mechanically inclined unfortunately lol

[@CoteMotorcycles]

Everything just takes practice. You didn’t know how to ride a bike at one time.

[@chrissuggs8521]

CoteMotorcycles thank you for the encouragement! Your right!

[@JwsDirtShop]

Dude i need you help EXTREMELY BAD!

[@CoteMotorcycles]

What up?

[@alejandrobaquerazambrana]

Perfecto saludos desde España

[@HugoMNF]

Militec 1 ?

[@Jockmystilo]

Thanks

[@jasonlawrence8302]

thanx!!

[@pauldiguer2078]

great video (y)

[@williamsjasonw]

This look so hard to do

[@braedenallen4539]

Nothing compared to my twin cam yz 450 after doin it about 3 times its easy thoe

[@purelove7855]

then get 2stroke

[@dopedickinsonbb8359]

Lol why cant there just be a predetermined set of shim size lol 😂 incan do literally everything except the fkn math

[@rah_84]

So on your equation, you had .127+1.93 which equals 2.057, but you had actually subtracted, so you put 1.803😂. So for the real equation, is it a=(b-c)-d ?

[@goboardcanada6263]

Randy Hamilton no, it’s correct. Re check your math. 0 - 0.127 = -0.127. What’s -0.127 + 1.93? “Laughing / crying emoji”

[@robertfarabee8893]

mach a 4 strook

[@smokeymountainrain]

The formula in the video may be recommended by honda, but wouldnt D-(C-B)=A, or (B+C)-C=A be a better solution? Of course honda would recomend the least simple solution they could think of. If the shims need to be replaced, subtracting the spec clearance from the measured one will give u a negative thickness, then by adding that negative, ur really subtracting anyway, and without a calculator, thats twice u have used the longest way to solve the equation, it seems almost backwards, maybe due to the international common core system influence now days, Idk, it may be the best formula to use in production and assembly, (or if the shim is broken to bits, or someone installed a smaller shim than what was needed, or the old one was missing bc it wasnt put back in, lost, etc), but its clearly not the best one for replacing shims after some valve wear, and Im gonna use my old fashioned American common sense to make things easy every chance I get. Dont get me wrong, Im not putting down the maker of this video, its nice of him to take the time to put this out to benefit his fellow mechanics and riders, its honda that suggests that formula, and just like alot of things these days, more complex than it has to be.

[@HondasandHotSauce]

smokeymountainrain I've been adding negative numbers effortlessly since elementary school... lol.